List of data displayed by the scan tool
The scan tool's engine data list contains all engine-related data available on the scan tool. The list is organized alphabetically. Each parameter may appear in any one of the data lists, in some cases more than once, or may appear in more than one data list if it pertains to a group of certain related parameters.
Use the data list displayed by the scan tool only after the following conditions are met:
- The diagnostic system check is complete.
- There are no diagnostic trouble codes (DTCs).
- Built-in diagnostic systems are functioning correctly.
The values obtained by the scan tool on a healthy engine can be used to compare with the data of the engine being diagnosed. The list of engine data displayed by the scan tool shows the values that would be obtained for a normally operating engine.
Important: Do not use a scan tool that displays erroneous data. A faulty scan tool should be reported to the manufacturer. Using a faulty scan tool may result in diagnostic errors and unnecessary replacement of parts and components.
Only the data listed below is included in this service information for diagnostic purposes. If all values are within the typical value ranges listed below, refer to the section "Symptoms. Engine controls used in diagnostics".
The column labeled "Data List" indicates where the parameter is located on the scan tool. The exact location of the data lists on the scan tool can be determined by consulting the scan tool's instruction manual. Each of the terms included in the lists is listed below:
- All: This parameter is present in all data lists below.
- Eng: Engine data
- Ign: Ignition data
- EVAP: Emission Control System Data (gasoline vapor recovery systems)
- FT: Air-fuel ratio control data
- HO2S: Oxygen Sensor (HO2S) data
- MF: Misfire Data
- TAC: Throttle Actuator Control (TAC) data
- CMP: Camshaft Position Sensor Actuator Data
- ODM: ODM Controller Data
- CH: Cooling / Heating, Ventilation and Air Conditioning (HVAC)data
- CT: Cruise Control/Traction Data
- ET: Electrical/Anti-Theft Data
- IPC: Instrument Cluster Data (IPC)
- IM: Intake Manifold (I/M) Data
- Trans: Transmission data
- FF: Status Record Data
- FR: Fault log data
List of data displayed by the scan tool
|
Scanning device parameter
|
List of data
|
Value range / unit of measurement of the parameter
|
Typical data values
|
|
Engine Idle / Hot Radiator Hose / Park or Neutral / Closed Loop / Accessory Off.
|
|||
|
A/C Disengage 1-8 History (Air conditioner shutdown log 1-8)
|
CH
|
Reason for A/C Disengagement (Reason for air conditioner shutdown)
|
changes
|
|
A/C High Side Pressure Sensor (High pressure air conditioner circuit pressure sensor)
|
CH
|
0 - 5 V
|
changes
|
|
A/C High Side Pressure Sensor (High pressure air conditioner circuit pressure sensor)
|
CH
|
kPa (psi)
|
changes
|
|
A/C OFF for WOT (Air conditioning off for wide open throttle)
|
CH
|
not really
|
No
|
|
A/C Pressure Disable (Air conditioning pressure is off)
|
CH
|
not really
|
No
|
|
A/C Relay Circuit Status (Air Conditioner Relay Circuit Status)
|
CH, ODM
|
OK/Fault/Indeterminate (OK / Faulty / Undefined)
|
OK (Proper)
|
|
A/C Relay (Air Conditioner Relay Command)
|
Eng, MF, CH
|
on/off.
|
Off.
|
|
A/C Request Signal (Air conditioner request signal)
|
CH
|
not really
|
No
|
|
APP Indicated Angle (Angular position of the accelerator pedal)
|
Eng, Ign, CMP, CT, EVAP, HO2S, FT, TAC, Trans
|
0–100%
|
0%
|
|
APP Sensor 1 (Sensor 1 APP)
|
TAC
|
0.9-4.5 V
|
1 B
|
|
APP Sensor 2 (Sensor 2 APP)
|
TAC
|
0.40-2.25 V
|
0.4 V
|
|
APP Sensor 1 and 2 (Sensors 1 and 2 APP)
|
TAC
|
Agree/Disagree (Compliance / Non-compliance)
|
Agree (Correspondence)
|
|
BARO
|
Eng, Ign, CMP, EVAP, HO2S, IM, FT, MF, TAC
|
65-104 kPa (8-16 psi)
|
changes with altitude
|
|
BARO
|
Eng, TAC, Trans
|
volt
|
changes
|
|
Brake Pedal Signal Status (Brake pedal signal status)
|
CT, TAC, Trans
|
Valid/Invalid (Valid / Invalid)
|
Valid (Valid)
|
|
Calculated ECT – Closed Loop Fuel Control (Calculated ECT - closed loop fuel control)
|
CH
|
-39°C to +40°C (-38°F to +104°F)
|
40°C (104°F)
|
|
Calculated ECT - Thermostat Diagnosis (Calculated ECT - thermostat diagnostics)
|
CH
|
-39°C to +40°C (-38°F to +284°F)
|
89°C (192°F)
|
|
Calc. TWC Temp. (Calculated catalyst temperature TWC) Cylinder bank 1 and 2
|
FT, MF
|
Temperature
|
changes
|
|
Catalytic Converter Protection Active (Catalytic converter protection enabled)
|
FT, MF
|
not really
|
No
|
|
Catalyst Monitor Complete This Ignition (The neutralizer efficiency check is complete for this ignition cycle)
|
IM
|
not really
|
changes
|
|
Catalyst Monitor Enabled This Ignition (Neutralizer efficiency monitoring is enabled in this ignition cycle)
|
IM
|
not really
|
changes
|
|
CKP Resync Counter (Synchronization counter with CKP sensor)
|
Ign, MF
|
Countdowns
|
0 counts
|
|
Component Monitor Complete This Ignition (Component testing is complete for this ignition cycle)
|
IM
|
not really
|
changes
|
|
Component Monitor Enabled This Ignition (Component monitoring for this ignition cycle is enabled)
|
IM
|
not really
|
changes
|
|
Crank Request Signal (Request to launch)
|
ET
|
not really
|
No
|
|
Cruise Control Active (Speed stabilizer enabled)
|
CT, IPC
|
not really
|
No
|
|
Cruise Disengage 1-8 History (Speed stabilizer shutdown log 1-8)
|
CT
|
Cause
|
changes
|
|
Cruise Inhibit Reason (Reason for speed stabilizer shutdown)
|
CT
|
Cause
|
changes
|
|
Cruise On/Off Switch (Speed stabilizer on/off switch)
|
CT
|
on/off.
|
Off.
|
|
Cruise Resume/Accel Switch (Cruise stabilizer switch "recover/accel" positions)
|
CT
|
on/off.
|
Off.
|
|
Cruise Set/Coast Switch (Cruise stabilizer switch "set/decrease" positions)
|
CT
|
on/off.
|
Off.
|
|
Current Gear (Current transmission)
|
Eng, CT, ET, IPC, FT, MF
|
P/N/Reverse/1st -5th (parking / neutral / rear stroke / 1st - 5th gear)
|
P/N
|
|
Current Gear Signal (Current gear signal)
|
ET, Trans
|
Valid/Invalid (Valid / Invalid)
|
Valid (Valid)
|
|
Cycles of Misfire Data (Number of misfire cycles)
|
MF
|
Counts 0-200
|
changes
|
|
Cylinder 1–6 Injector Circuit Status (Condition of the injector chain of cylinders 1-6)
|
ODM
|
OK/Fault/Indeterminate (OK / Faulty / Undefined)
|
OK (Proper)
|
|
Cylinder 1-6 Knock Retard (Reducing the ignition timing to eliminate detonation in cylinders 1-6)
|
Ign
|
Degree
|
0 degrees
|
|
Decel. Fuel Cutoff (Fuel cut-off during deceleration)
|
Eng, FT, HO2S
|
Active/Inactive (On/Off)
|
Inactive (Disabled)
|
|
Desired Exh. CMP Bank 1 or 2 (Required position of the exhaust camshaft of cylinders of bank 1 or 2)
|
CMP
|
Degree
|
changes
|
|
Desired HO2S Bank 1 or 2 Sensor 1 (Required reading from HO2S1 sensor bank 1 or 2)
|
HO2S
|
Lambda
|
changes
|
|
Required idle speed
|
Eng, EVAP, CMP, TAC
|
0-7000 rpm
|
650 rpm
|
|
Desired Int. CMP Bank 1 or 2 (Required position of the intake camshaft of cylinders of bank 1 or 2)
|
CMP
|
Degrees
|
changes
|
|
DTC Set This Ignition (DTC set on this ignition cycle)
|
Eng, Ign, CMP, EVAP, FT, HO2S, TAC
|
not really
|
No
|
|
EC Ignition Relay Command (Command to the ignition relay of the engine management system)
|
Eng, TAC, ET
|
on/off.
|
On.
|
|
EC Ignition Relay Feedback Signal (Signal in the feedback circuit of the ignition relay of the engine management system)
|
Eng, TAC, ET
|
0-25.5 V
|
12.0-14.5 V
|
|
ECM Reset (ECU reset)
|
Eng, Ign, EVAP, FT
|
not really
|
No
|
|
ECT sensor
|
Eng, Ign, CMP, EVAP, HO2S, FF, FR, FT, MF, TAC, CH, IM, IPC, Trans
|
-39°C to +140°C (-38°F to +284°F)
|
changes
|
|
Engine load
|
Eng, Ign, CMP, EVAP, HO2S, FF, FR, FT, MF, TAC, CH, Trans
|
0-99%
|
0-5% at idle 3-7% at 2500 rpm
|
|
Engine Off EVAP Test Conditions Met (The conditions for the Emission Control System test with the engine off are met)
|
SUPB (Gasoline vapor recovery system)
|
not really
|
changes
|
|
Engine Off Time (Duration of the engine off state)
|
EVAP, IM
|
0:00:00 seconds
|
changes
|
|
Engine Oil Level Switch (Engine oil level sensor)
|
Eng, CMP, IPC
|
OK/Low (Good / Low)
|
OK (Proper)
|
|
Engine Oil Life Remaining (Remaining life of engine oil)
|
CMP, IPC
|
%
|
changes
|
|
Engine Oil Pressure Sensor (Engine oil pressure sensor)
|
IPC
|
OK, Low (Good / Low)
|
OK (Proper)
|
|
Engine Oil Pressure Sensor (Engine oil pressure sensor)
|
Eng, MF, CMP, IPC
|
kPa (psi)
|
changes
|
|
Engine Oil Pressure Sensor (Engine oil pressure sensor)
|
IPC, MF
|
1-5 V
|
changes
|
|
Engine running time
|
Eng, Ign, ET, EVAP, FT, HO2S, MF, TAC, CMP, ODM, CH, CT, IM
|
0:00:00
|
changes
|
|
Engine speed
|
ALL
|
rpm
|
575-700 rpm
|
|
EVAP Monitor Complete This Ignition (Emission control system monitoring is complete for this ignition cycle)
|
IM
|
not really
|
changes
|
|
EVAP Monitor Enabled This Ignition (Emission control is enabled in this ignition cycle)
|
IM
|
not really
|
changes
|
|
EVAP Purge Solenoid Circuit Status (Status of the ECU purge valve circuit)
|
ODM
|
OK/Fault/Indeterminate (OK / Faulty / Undefined)
|
OK (Proper)
|
|
EVAP Purge Solenoid Command (Purge valve command of the Emission Control System).
|
Eng, EVAP, FT
|
0-100%
|
changes
|
|
EVAP Vent Solenoid Circuit Status (State of the ventilation valve circuit of the SUPB)
|
ODM
|
OK/Fault/Indeterminate (OK / Faulty / Undefined)
|
OK (Proper)
|
|
EVAP Vent Solenoid Command (Command of the ventilation valve of the SUPB)
|
Eng, EVAP, FT
|
Venting/Not Venting (Ventilation on / Ventilation off)
|
Venting (Ventilation is on)
|
|
Exh. CMP Angle Bank 1 or 2 (Angular position of the exhaust camshaft of cylinder bank 1 or 2)
|
Eng, CMP
|
Degrees
|
changes
|
|
Exh. CMP Angle Bank 1 or 2 Variance (Divergence of the angular position of the exhaust camshaft of cylinder bank 1 or 2)
|
CMP
|
Degrees
|
changes
|
|
Exh. CMP Bank 1 or 2 Command (Exhaust camshaft command for cylinder bank 1 or 2)
|
CMP
|
0-99%
|
changes
|
|
Exh. CMP Solenoid Bn. 1 or 2 Circuit Status (Bank 1 or 2 exhaust camshaft valve chain condition)
|
ODM
|
OK/Fault/Indeterminate (OK / Faulty / Undefined)
|
OK (Proper)
|
|
Extended Travel Brake Pedal Switch (Extended Brake Pedal Travel Switch)
|
Eng, TAC, CT
|
Applied/Released (Pressed / Released)
|
Released
|
|
FC Relay 1 Circuit Status (Fan Control Relay 1 Circuit Status)
|
CH, ODM
|
OK/Fault/Indeterminate (OK / Faulty / Undefined)
|
OK (Proper)
|
|
FC Relay 1 Command (Fan control relay 1 command)
|
CH
|
on/off.
|
changes
|
|
FC Relay 2 and 3 Command (Fan control relay command 2 and 3)
|
CH
|
on/off.
|
changes
|
|
FC Relay 2 and 3 Circuit Status (Fan control relay circuit status 2 and 3)
|
CH, ODM
|
OK/Fault/Indeterminate (OK / Faulty / Undefined)
|
OK (Proper)
|
|
fuel level
|
SUPB (Gasoline vapor recovery system)
|
0–100%
|
changes
|
|
Fuel level sensor
|
EVAP, IPC
|
0 - 5 V
|
changes
|
|
Fuel Pump Relay Circuit Status (Fuel Pump Relay Circuit Status)
|
ODM
|
OK/Fault/Indeterminate (OK / Faulty / Undefined)
|
OK (Proper)
|
|
Fuel Pump Relay Command (Fuel Pump Relay Command)
|
Eng
|
on/off.
|
On.
|
|
Fuel Tank Level Remaining (The current fuel level in the fuel tank)
|
Eng, EVAP, IPC, MF, IM
|
Liter/Gallon (liter / gallon)
|
changes
|
|
Fuel Tank Pressure Sensor (Fuel tank pressure sensor)
|
SUPB (Gasoline vapor recovery system)
|
in H2O / mmHg
|
changes
|
|
Fuel Tank Pressure Sensor (Fuel tank pressure sensor)
|
Eng, EVAP
|
0-5 volts
|
changes
|
|
Fuel Tank Rated Capacity (Nominal capacity of fuel tank)
|
SUPB (Gasoline vapor recovery system)
|
Liter/Gallon (liter / gallon)
|
17.8 gallons (67.3 liters)
|
|
Fuel Trim Learn (Fuel injection adjustment training)
|
Eng, EVAP, FT, HO2S
|
Enabled/Disabled (On / Off)
|
Enabled
|
|
GEN L-Terminal Signal Command (Generator L-contact command)
|
ET
|
0-100%
|
changes
|
|
Generator F-Terminal Signal (Generator F-contact signal)
|
ET
|
0-100%
|
changes
|
|
HO2S Bank 1 or 2 Sensor 1 (HO2S Sensor 1 Bank 1 or 2)
|
Eng, EVAP, FT, HO2S
|
0 - 1006 mV
|
Changes 400 - 700 mV
|
|
HO2S Bank 1 or 2 Sensor 1 (HO2S Sensor 1 Bank 1 or 2)
|
Eng, FT, HO2S
|
0 - 1006 mV
|
Changes 400 - 700 mV
|
|
HO2S Heater Monitor Complete This Ignition (HO2S Heater Monitoring Completed This Ignition Cycle)
|
IM
|
not really
|
changes
|
|
HO2S Heater Monitor Enabled This Ignition (HO2S Heater Control is On This Ignition Cycle)
|
IM
|
not really
|
changes
|
|
HO2S Htr. Bn. 1 or 2 Sensor 1 or 2 Circuit Status (Bank 1 or 2 Sensor Heater Circuit Status)
|
ODM
|
OK/Fault/Indeterminate (OK / Faulty / Undefined)
|
OK (Proper)
|
|
HO2S Htr. Bn. 1 or 2 Sensor 1 Command (Sensor 1 Heater Command Bank 1 or 2)
|
HO2S
|
0-99%
|
changes
|
|
HO2S/O2S Monitor Complete This Ignition (HO2S/O2S monitoring is complete for this ignition cycle)
|
IM
|
not really
|
changes
|
|
HO2S/O2S Monitor Enabled This Ignition (HO2S/O2S control is enabled in this ignition cycle)
|
IM
|
not really
|
changes
|
|
HO2S Sensing Element Bn. 1 or 2 Sensor 1 (HO2S sensor element for cylinder row 1 or 2)
|
HO2S
|
Ohm
|
20 - 300 Ohm depending on temperature
|
|
HO2S Sensing Element Bn. 1 or 2 Sensor 2 (HO2S sensor sensor element 2 cylinder rows 1 or 2)
|
HO2S
|
Ohm
|
20 - 300 Ohm depending on temperature
|
|
IAT sensor
|
Eng, Ign, EVAP, FT, FF, FR, HO2S, IM, TAC, CMP, CH, Trans
|
Changes from -39°C to +140°C (from -38°F to +284°F)
|
changes
|
|
Ignition 0 Signal (Ignition signal 0)
|
Eng, Ign, EVAP, TAC, ET, IM, IPC, Trans
|
on/off.
|
On.
|
|
Ignition 1 Signal (Ignition signal 1)
|
Eng, Ign, EVAP, FT, MF, TAC, CMP, ET, IM, IPC, Trans
|
on/off.
|
On.
|
|
IMRC Solenoid Circuit Status (IMRC Valve Circuit Status)
|
ODM
|
OK/Fault/Indeterminate (OK / Faulty / Undefined)
|
OK (Proper)
|
|
IMRC Solenoid Command (IMRC Valve Command)
|
Eng
|
on/off.
|
Off.
|
|
Initial Brake Apply Signal (Initial brake pedal press signal)
|
TAC, CT
|
Applied/Released (Pressed / Released)
|
Released
|
|
Injector 1-6 Command (Injector team 1-6)
|
FT, MF
|
msec
|
changes
|
|
Injector PWM Bank 1 or 2 Average (Average PWM of injectors of cylinder banks 1 or 2)
|
FT, MF
|
0 - 9 msec
|
4.6-5.4 msec
|
|
Int. CMP Angle Bank 1 or 2 (Angular position of the intake camshaft of cylinder bank 1 or 2)
|
Eng, CMP
|
Degrees
|
changes
|
|
Int. CMP Angle Bank 1 or 2 Variance (Inlet camshaft angular position discrepancy for cylinder bank 1 or 2)
|
CMP
|
Degrees
|
changes
|
|
Int. CMP Bank 1 or 2 Command (Intake camshaft command for cylinder bank 1 or 2)
|
CMP
|
0–99%
|
changes
|
|
Int. CMP Solenoid Bn. 1 or 2 Circuit Status (Intake camshaft valve chain condition for bank 1 or 2)
|
ODM
|
OK/Fault/Indeterminate (OK / Faulty / Undefined)
|
OK (Proper)
|
|
Knock Retard (Reducing ignition timing to eliminate detonation)
|
Eng, Ign, CH
|
Degrees
|
changes
|
|
KS 1 or 2 Signal (Signal KS 1 or 2)
|
Ign
|
volt
|
changes
|
|
Loop Status Bn. 1 or 2 Sen. 1 (Sensor circuit status 1 cylinder bank 1 or 2)
|
Eng, EVAP, FT, HO2S, FF, FR
|
Open Loop/Closed Loop (Open Loop / Closed Loop)
|
Closed loop
|
|
Loop Status Bn. 1 or 2 Sen. 2 (Sensor circuit status 2 cylinder bank 1 or 2)
|
Eng, EVAP, FT, HO2S, FF, FR
|
Open Loop/Closed Loop (Open Loop / Closed Loop)
|
Closed loop
|
|
LT FT Bn. 1 or Bn. 2 Cruise/Accel. (Long Term Adjustment Row 1 or 2 Constant Speed/Acceleration)
|
Eng, EVAP, FT, HO2S
|
From -100% to +100%
|
0%
|
|
LT FT Bn. 1 or Bn. 2 Idle/Decel. (Long-term adjustment correction row 1 or 2 i.h./braking)
|
Eng, EVAP, FT, HO2S
|
From -100% to +100%
|
0%
|
|
MAF Sensor (MAF sensor)
|
Eng, Ign, FT, HO2S, MF, TAC, CMP, FF, FR, Trans
|
0 - 655 g/s
|
3.4-6.3 g/s
|
|
MAF Sensor (MAF sensor)
|
Eng, Ign, EVAP, FT, HO2S, MF, TAC, CMP, Trans
|
0 - 5 V
|
0.9-1.7 V
|
|
MIL Circuit Status (MIL Circuit Status)
|
IPC, ODM
|
OK/Fault/Indeterminate (OK / Faulty / Undefined)
|
OK (Proper)
|
|
MIL Command (MIL Team)
|
Eng, EVAP, IM, IPC, Trans
|
on/off.
|
Off.
|
|
Mileage Since DTC Cleared (Mileage since DTC reset)
|
FF, FR
|
km - miles (km - miles)
|
changes
|
|
Mileage Since First Failure (Mileage since first failure)
|
FF, FR
|
km - miles (km - miles)
|
changes
|
|
Mileage Since Last Failure (Mileage since last malfunction)
|
FF, FR
|
km - miles (km - miles)
|
changes
|
|
Mileage Since MIL Requested (Mileage since contacting MIL)
|
FF, FR
|
km - miles (km - miles)
|
changes
|
|
Misfire Current Cyl. 1-6 (Current misfires cyl. 1-6)
|
MF
|
0 - 255 counts
|
0
|
|
Misfire History Cyl. 1-6 (Misfire archive cyl. 1-6)
|
MF
|
0 - 65535 counts
|
0
|
|
Misfire Monitor Complete This Ignition (Misfire control for this ignition cycle is complete)
|
IM
|
not really
|
changes
|
|
Misfire Monitor Enabled This Ignition (Misfire control is enabled for this ignition cycle)
|
IM
|
not really
|
changes
|
|
Moderate Brake Apply Signal (Moderate brake pedal pressure signal)
|
TAC, CT
|
Applied/Released (Pressed / Released)
|
Released
|
|
PNP Switch ("Parking/neutral" switch)
|
Eng, ET, Trans
|
Park/Neutral/In Gear (park/neutral/gear)
|
P/N
|
|
power enrichment
|
Eng, FT, HO2S, MF
|
Active/Inactive (On/Off)
|
Inactive (Disabled)
|
|
PRNDL (PRNDL range)
|
Trans
|
D1, D2, D3, D4, D5, Neutral, Park, Reverse (gears 1, 2, 3, 4, 5, neutral, park, reverse)
|
Park/Neutral (park/neutral)
|
|
Reduced Engine Power (Reduced engine power)
|
Eng, TAC, IP
|
Active/Inactive (On/Off)
|
Inactive (Disabled)
|
|
Short Term FT Bank 1 or Bank 2 (Short-term fuel trim for cylinder bank 1 or 2)
|
Eng, EVAP, FT, HO2S, FF, FR
|
From -25% to +25%
|
From -3% to +3%
|
|
Spark
|
Eng, Ign, FT, HO2S, MF, CH, CT, FF, FR
|
From -20 to +40 degrees
|
2-10 degrees
|
|
Starter Relay Circuit Status (Starter Relay Circuit Status)
|
ET, ODM
|
OK/Fault/Indeterminate (OK / Faulty / Undefined)
|
OK (Proper)
|
|
Starter Relay Command (Starter Relay Command)
|
ET
|
on/off.
|
Off.
|
|
Start Up ECT (ECT Launcher)
|
EVAP, FT, HO2S, CH, IM
|
-39°C to +140°C (-38°F to +284°F)
|
changes
|
|
Start Up IAT (Launcher IAT)
|
EVAP, FT, HO2S, CH, IM
|
-39°C to +140°C (-38°F to +284°F)
|
changes
|
|
Stop Lamp Pedal Switch (Brake pedal light switch)
|
Eng, CT, TAC
|
Applied/Released (Pressed / Released)
|
Released (Released)
|
|
System Power Mode (System power consumption mode)
|
EVAP, TAC, ET
|
Off, Accessory, RAP, Run, or Crank Request (off, auxiliary, RAP mode, drive, start)
|
Run (movement)
|
|
TAC System Learned Counts (TAC System Training Steps)
|
TAC
|
0-11 counts
|
0
|
|
TCC Brake Pedal Switch (TCC Brake Pedal Switch)
|
CT, IM, Trans
|
Applied/Released (Pressed / Released)
|
Released (Released)
|
|
TCC Status (TCC Status)
|
Eng, MF, Trans
|
Locked/Unlocked (Blocked / Unblocked)
|
Unlocked (Unlocked)
|
|
TCM Requested Torque (TCM Torque Requirement)
|
CT, TAC, Trans
|
Н·м/lb ft (N m / lb ft)
|
changes
|
|
TCM Torque Increase (TCM Torque Boost)
|
CT, TAC, Trans
|
not really
|
No
|
|
TCS Torque Increase (TCS Torque Boost)
|
CT, TAC
|
not really
|
No
|
|
TCM Torque Reduction Active (TCM Torque Reduction Active)
|
CT, TAC, Trans
|
not really
|
No
|
|
TCS Torque Reduction Active (TCS torque reduction active)
|
CT, TAC
|
not really
|
No
|
|
Torque Delivered Signal (Received torque signal)
|
FT, TAC, CT
|
0-100%
|
changes
|
|
Torque Request Signal (Required torque signal)
|
FT, TAC, CT
|
0-100%
|
90-98%
|
|
Total Fuel Trim Avg. Bank 1 and 2 (Average Total Fuel Trim on Bank 1 or 2)
|
EVAP, FT, HO2S
|
From -100 to +100%
|
changes
|
|
Total Misfire Count (Total number of misfires)
|
MF
|
Countdowns
|
0
|
|
TP Desired Angle (Required TP angle)
|
Eng, EVAP, TAC, CT
|
0-100%
|
changes
|
|
TP Indicated Angle (TP indicator angle)
|
Eng, Ign, EVAP, FT, HO2S, MF, TAC, CMP, CT, FF, FR, Trans
|
0-100%
|
changes
|
|
TP Sensor 1 (TP 1 sensor)
|
TAC
|
0 - 5 V
|
0.5-0.8 V
|
|
TP Sensor 1 Learned Minimum (Selected minimum sensor 1 TP)
|
TAC
|
0 - 5 V
|
0-0.6 V
|
|
TP Sensor 2 (TP 2 sensor)
|
TAC
|
0 - 5 V
|
4.7 - 4.1 V
|
|
TP Sensor 2 Learned Minimum (Selected minimum sensor 2 TP)
|
TAC
|
0 - 5 V
|
5 - 3.7 V
|
|
TP Sensors 1 and 2 (TP sensors 1 and 2)
|
TAC
|
Agree/Disagree (Compliance / Non-compliance)
|
Agree (Correspondence)
|
|
Traction Control Status (Traction control status)
|
TAC, CT
|
Active/Inactive (On/Off)
|
Inactive (Disabled)
|
|
Transmission Gear Selector Signal (Gearbox selector signal)
|
Trans
|
Valid/Invalid (Valid / Invalid)
|
Valid (Valid)
|
|
Vehicle Security Status (Status of the car security system)
|
ET, IPC
|
Password Learning, VTD Fail-Enable, Auto Learn Timer, Fuel Disable Until Ign Off, Fuel Disable Timeout, and Fuel Continued (Password definition, security alarm not on-on, fuel supply off before ignition on, fuel supply off time limit, fuel supply continued)
|
Fuel Continued (continuation of fuel supply)
|
|
vehicle speed sensor
|
Eng, Ign, EVAP, FT, HO2S, MF, TAC, CMP, CH, CT, IM, IPC, FF, FR, Trans
|
km/h
mph
|
changes
|
|
Volumetric Efficiency (Volumetric efficiency)
|
Eng, Ign, EVAP, FT, HO2S, MF, TAC, CMP, CH, Trans
|
0-100%
|
5-25% - at idle and 2500 rpm
|
Definitions of data displayed by a scan tool
The scan tool data definition list contains a brief description of all engine related parameters that can be retrieved with the scan tool. The list is organized alphabetically. A parameter may appear in any of the data lists. Some parameters may appear more than once or be in more than one list, being part of a group of certain related parameters.
A/C Disengage 1-8 History (Disconnection of 1-8 air conditioners). The parameter indicates the last 8 shutdowns of the air conditioner compressor, in sequence from 1 to 8, with the 8th shutdown being the most recent. There are approximately 8 possible reasons for the air conditioner compressor to shut down.
A/C High Side Pressure Sensor (High pressure air conditioner circuit pressure sensor). The parameter indicates the voltage value received by the controller from the signal circuit of the pressure sensor located in the high-pressure circuit of the air conditioner.
A/C High Side Pressure Sensor (High pressure air conditioner circuit pressure sensor). The parameter indicates the pressure value received by the controller from the signal circuit of the pressure sensor located in the high-pressure circuit of the air conditioner.
A/C OFF for WOT (Air conditioning off for wide open throttle) This parameter indicates whether the controller commands the A/C compressor clutch relay to turn off at wide open throttle (WOT).
A/C Pressure Disable (Air conditioning pressure is off). This parameter indicates whether the air conditioner pressure, as determined by the controller, has gone beyond the range provided for normal operation,
A/C Relay Circuit Status (Air Conditioner Relay Circuit Status). This parameter indicates the state of the A/C Clutch Relay control circuit. This parameter has a value of Fault (Faulty), if the air conditioner clutch control circuit is open, shorted to ground, or shorted to a live wire. The parameter has a value of Indeterminate (Not defined) until the circuit receives a "turn on" command. This parameter may not change if a scan tool is used to turn on the air conditioner relay.
A/C Relay Command (Air Conditioner Relay Command). This parameter indicates the state of the air conditioner clutch relay control circuit as specified by the controller command.
A/C Request Signal (Air conditioner request signal). This parameter specifies the state of input to the controller of requests coming from the HVAC controls.
APP Indicated Angle (Angular position of the accelerator pedal) This parameter indicates the angle at which the accelerator pedal is located, calculated by the controller based on signals from the APP sensors.
APP Sensor 1 (Sensor 1 APP). This parameter displays the actual voltage in the accelerator pedal position (APP) sensor 1 signal circuit as measured by the controller.
APP Sensor 2 (Sensor 2 APP). This parameter displays the actual voltage in the accelerator pedal position (APP) sensor 2 signal circuit as measured by the controller.
APP Sensor 1 and 2 (Sensors 1 and 2 APP). This parameter has the value "Disagree" (Inconsistency), if the controller detects that there is no correct relationship between the signal voltage of APP Sensor 1 and APP Sensor 2. The scan tool displays "Agree" (Correspondence) under normal operating conditions.
BARO. This parameter indicates the barometric pressure. Barometric pressure is used by the controller to control fuel delivery to compensate for the effects of altitude changes.
Brake Pedal Signal Status (Brake pedal signal status). This parameter contains the brake signal in the form of serial data received from the Electronic Brake and Traction Control Module (EBTCM).
Calculated ECT – Closed Loop Fuel Control (Calculated ECT - closed loop fuel control) This parameter indicates the calculated temperature that the controller determines based on the engine air intake, coolant temperature, and ambient air temperature. If the actual coolant temperature does not reach this calculated value within the specified time, a diagnostic trouble code will be set.
Calculated ECT – Thermostat Diagnosis (Calculated ECT - thermostat diagnostics). This parameter indicates the calculated temperature that the controller determines based on the engine air intake, coolant temperature, and ambient air temperature. If the actual coolant temperature does not reach this calculated value within the specified time, a diagnostic trouble code will be set.
Calc. TWC Temp. Bank 1 or Bank 2 (Estimated Catalytic Converter Temp, Bank 1 or 2). This parameter indicates the temperature of the catalytic converter calculated by the controller.
Catalytic Converter Protection Active (Catalytic converter protection enabled) This parameter indicates whether the controller has issued a command to protect the catalytic converter
Catalyst Monitor Complete This Ignition (The neutralizer efficiency check is complete for this ignition cycle) This parameter indicates whether the control is completed in the current engine/control cycle.
Catalyst Monitor Enabled This Ignition (Neutralizer efficiency monitoring is enabled in this ignition cycle) This parameter indicates whether control is enabled in the current engine/control cycle.
CKP Resync Counter (Synchronization counter with CKP sensor). This parameter indicates the number of times the controller has synchronized with the crankshaft position sensor.
Component Monitor Complete This Ignition (Component testing is complete for this ignition cycle). This parameter indicates whether the diagnostic check has been completed in the current engine/check cycle.
Component Monitor Enabled This Ignition (Component monitoring for this ignition cycle is enabled). This parameter indicates whether diagnostic monitoring is enabled in the current engine/monitor cycle.
Crank Request (Request to launch). This parameter indicates whether the ignition key has been turned to the start position, at which point the controller should activate the starter relay.
Cruise Control Active (Speed stabilizer enabled). This parameter indicates the state of the automatic speed control system as determined by the controller.
Cruise Disengage 1-8 History (Disabling 1-8 speed stabilizer). The parameter indicates the last 8 trips of the speed stabilizer, in sequence from 1 to 8, with the 8th trip being the most recent. There are approximately 33 possible reasons for the speed stabilizer to trip.
Cruise Inhibit Reason (Reason for speed stabilizer shutdown). This parameter specifies the reason for disabling the speed stabilizer.
Cruise On/Off Switch (Speed stabilizer on/off switch). This parameter specifies the signal coming from the speed stabilizer on/off switch to the controller input.
Cruise Resume/Accel Switch (Cruise stabilizer switch "recover/accel" positions). This parameter indicates the signal received by the controller regarding the status of the speed stabilizer switch "recover/accelerate" positions.
Cruise Set/Coast Switch (Cruise stabilizer switch "set/decrease" positions) This parameter indicates the signal received by the controller regarding the status of the "set/decrease" positions of the speed stabilizer switch.
Current Gear (Current transmission). This parameter indicates the gear engaged by the transmission controller.
Current Gear Signal (Current gear signal). This parameter has the value Invalid (Invalid), if the serial data from the transmission controller is invalid.
Cycles of Misfire Data (Number of misfire cycles). This parameter specifies the number of misfire checks per 200 engine revolutions.
Cylinder 1–6 Injector Circuit Status (Condition of the injector chain of cylinders 1-6). This parameter indicates the state of the fuel injector control circuit. This parameter has a value of Fault (Faulty), if the fuel injector control circuit is open, shorted to ground, or shorted to a live wire. This parameter is displayed as Inderterminate (Not defined) until the control circuit is turned on.
Cylinder 1-6 Knock Retard (Reducing the ignition timing to eliminate detonation in cylinders 1-6) This parameter specifies the reduction in ignition advance angle set by the controller command for cylinders 1-6 in order to eliminate detonation. Each cylinder is controlled separately, using signals from both knock sensors.
Decel. Fuel Cutoff (Fuel cut-off during deceleration). This parameter specifies the controller operating mode state used to turn off the fuel injectors and the Evaporative Emissions Canister Purge Valve under certain deceleration conditions.
Desired Exh. CMP Bank 1 or 2 (Required position of the exhaust camshaft of cylinders of bank 1 or 2). This parameter indicates the required angular position of the exhaust camshaft, as specified by the controller command.
Desired HO2S Bank 1 or 2 Sensor 1 (Required reading from HO2S sensor 1 bank 1 or 2) This parameter specifies the required lambda value for the oxygen sensor, as specified by the controller command.
Desired Idle Speed (Required idle speed). This parameter specifies the desired idle speed as specified by the controller command.
Desired Int. CMP Bank 1 or 2 (Required position of the intake camshaft of cylinders of bank 1 or 2). This parameter indicates the required angular position of the intake camshaft, as specified by the controller command.
DTC Set This Ignition (DTC set on this ignition cycle). This parameter displays Yes if a diagnostic trouble code (DTC) is set in the current ignition cycle.
EC Ignition Relay Command (Command to the ignition relay of the engine management system). This parameter specifies the state of the controller power relay control circuit as specified by the controller command.
EC Ignition Relay Feedback Signal (Signal in the feedback circuit of the ignition relay of the engine management system). This parameter indicates the voltage of the ignition relay of the engine management system available at the controller contact.
ECM Reset (ECU reset). This parameter is set to Yes if the controller has internally reset. Under normal operating conditions, the scan tool displays NO.
ECT Sensor (ECT sensor). This parameter indicates the engine coolant temperature as determined by the data received by the controller from the engine coolant temperature (ECT) sensor.
Engine Load (Engine load). This parameter indicates the estimated engine load in percentage, determined from the data received by the controller from various engine sensors.
Engine Off EVAP Test Conditions Met (The conditions for the ESP test with the engine off are met). This parameter has a value of Yes if the conditions required for diagnosing the ECU with the engine off are met.
Engine Off Time (Duration of the engine off state). This parameter indicates the length of time that has passed since the engine was last turned off.
Engine Oil Level Switch (Engine oil level sensor). This parameter indicates whether the engine oil level is within the required limits, which is determined by the controller based on information received from the engine oil level sensor.
Engine Oil Life Remaining (Remaining life of engine oil). This parameter indicates the remaining service life of the engine oil in percent. The controller calculates the service life of the engine oil by continuously monitoring the engine load, coolant temperature and engine speed.
Engine Oil Pressure Sensor (Engine oil pressure sensor). This parameter has a value of OK if the engine oil pressure is within the required limits. If the controller detects that the oil pressure is outside the required range, the scan tool will display the value Low.
Engine Oil Pressure Sensor (Engine oil pressure sensor). This parameter indicates the engine oil pressure.
Engine Oil Pressure Sensor (Engine oil pressure sensor). This parameter indicates the voltage supplied to the controller from the engine oil pressure (EOP) sensor.
Engine Run Time (Engine running time). This parameter indicates the time elapsed since the engine was started.
Engine Speed (Engine speed). This parameter displays the engine crankshaft speed as determined by the crankshaft position (CKP) sensor. If a CKP sensor diagnostic trouble code is set, the ECM will calculate engine speed based on information from one of the camshaft position (CMP) sensors.
EVAP Monitor Complete This Ignition (Emission control system monitoring is complete for this ignition cycle). This parameter indicates whether the diagnostic check has been completed in the current engine/check cycle.
EVAP Monitor Enabled This Ignition (Emission control is enabled in this ignition cycle). This parameter indicates whether diagnostic monitoring is enabled in the current engine/monitor cycle.
EVAP Purge Solenoid Circuit Status (Status of the ECU purge valve circuit) This parameter indicates the state of the fuel vapor canister purge valve control circuit. This parameter has a value of Fault (Faulty), if the Evaporative Canister Purge Valve control circuit is open, shorted to ground, or energized. This parameter is displayed as Inderterminate (Not defined) until the circuit is turned on.
EVAP Vent Solenoid Circuit Status (State of the ventilation valve circuit of the SUPB). This parameter indicates the state of the control circuit for the vent valve of the ESBP. This parameter has a value of Fault (Faulty), if the control circuit of the ventilation valve of the SUPB is open, shorted to ground or to a wire under voltage. The parameter has the value Indeterminate (Not defined) until the "on" command is received along the chain. This parameter may not change if a scanning device is used to turn on the EGR valve.
EVAP Vent Solenoid Command (Command of the ventilation valve of the SUPB). This parameter indicates the state of the evaporative emission control valve control circuit as commanded by the controller. Exh.
CMP Angle Bank 1 or 2 (Angular position of the exhaust camshaft of cylinder bank 1 or 2). This parameter indicates the state of the controller power relay control circuit as specified by the controller command.
Exh. CMP Angle Bank 1 or 2 Variance (Divergence of the angular position of the exhaust camshaft of cylinder bank 1 or 2). This parameter indicates in degrees the difference between the required and actual angular position of the exhaust camshaft.
Exh. CMP Bank 1 or 2 Command (Exhaust camshaft command for cylinder bank 1 or 2). This parameter specifies the angular position in percentage of the maximum value for the exhaust camshaft, as commanded by the controller.
Exh. CMP Solenoid Bn. 1 or 2 Circuit Status (Bank 1 or 2 exhaust camshaft valve chain condition) This parameter indicates the state of the exhaust camshaft timing actuator solenoid control circuit. This parameter has a value of Fault (Faulty), if the camshaft timing actuator solenoid control circuit is open, shorted to ground, or shorted to a live wire. This parameter is displayed as Inderterminate (Not defined) until the circuit is turned on.
Extended Travel Brake Pedal Switch (Extended Brake Pedal Travel Switch). This parameter indicates the brake pedal state as determined by the controller based on the position of the extended brake pedal travel switch.
FC Relay 1 Circuit Status (Fan Control Relay 1 Circuit Status). This parameter indicates the state of the fan relay control circuit. This parameter has a value of Fault (Faulty), if the fan relay control circuit is open, shorted to ground, or shorted to a live wire. This parameter is displayed as Inderterminate (Not defined) until the circuit is turned on.
FC Relay 1 Command (Fan control relay 1 command). This parameter indicates the state of the fan control circuit as specified by the controller command.
FC Relay 2 and 3 Command (Fan control relay command 2 and 3). This parameter indicates the state of the fan control circuit as specified by the controller command.
FC Relay 2 and 3 Circuit Status (Fan control relay circuit status 2 and 3). This parameter indicates the state of the fan relay control circuit. This parameter has a value of Fault (Faulty), if the fan relay control circuit is open, shorted to ground, or shorted to a live wire. This parameter is displayed as Inderterminate (Not defined) until the relay control circuit is turned on.
Fuel Level (Fuel level). This parameter indicates the amount of fuel in the fuel tank calculated by the controller as a percentage of the maximum value.
Fuel Level Sensor Left Tank (Secondary) (Left sensor (additional) fuel level in the tank). This parameter indicates the voltage received by the controller from the left, or additional, fuel level sensor.
Fuel Level Sensor Right Tank (Main) (Right sensor (main) of the fuel level in the tank). This parameter indicates the voltage received by the controller from the right or main fuel level sensor.
Fuel Pump Relay Circuit Status (Fuel Pump Relay Circuit Status). This parameter indicates the state of the fuel pump relay control circuit. This parameter has a value of Fault (Faulty), if the fuel pump relay control circuit is open, shorted to ground, or shorted to a live wire. This parameter displays as Inderterminate (Not defined) until the circuit is turned on.
Fuel Pump Relay Command (Fuel Pump Relay Command). This parameter indicates the state of the fuel pump relay control circuit as commanded by the controller.
Fuel Tank Level Remaining (The current fuel level in the fuel tank). This parameter indicates the amount of fuel in liters/gallons available in the fuel tank, determined by the controller based on information received from the left and right fuel level sensors.
Fuel Tank Pressure Sensor (Fuel tank pressure sensor). This parameter indicates the pressure/vacuum in the fuel tank. A negative value indicates a vacuum, and a positive value indicates pressure.
Fuel Tank Pressure Sensor (Fuel tank pressure sensor). This parameter indicates the voltage supplied to the controller from the fuel tank pressure (FTP) sensor.
Fuel Tank Rated Capacity (Nominal capacity of fuel tank). This parameter indicates the capacity of the fuel tank in liters or gallons.
Fuel Trim Learn (Fuel injection adjustment training). This parameter displays Enabled when conditions are sufficient to enable the long term fuel trim adjustment mode. This indicates that the long term fuel trim adapts based on the long term short term fuel trims. If the scan tool displays Disabled, then the long term fuel trim does not respond to changes in the short term trim.
GEN L-Terminal Command (Generator L-contact command). This parameter indicates the state of the generator voltage regulator as specified by the controller command.
Generator F-Terminal Signal (Generator F-contact signal). This parameter specifies the duration of the generator on, as specified by the controller command. The higher this percentage value, the higher the generator output power.
HO2S Bank 1 or 2 Sensor 1 (HO2S Sensor 1 Bank 1 or 2). This parameter indicates the output voltage received from the oxygen sensor to the controller. A low voltage indicates exhaust gases with an increased oxygen content, and a high voltage indicates exhaust gases with a reduced oxygen content.
HO2S Bank 1 or 2 Sensor 2 (HO2S Sensor 2 Bank 1 or 2). This parameter indicates the output voltage received from the oxygen sensor to the controller. A low voltage indicates exhaust gases with an increased oxygen content, and a high voltage indicates exhaust gases with a reduced oxygen content.
HO2S Heater Monitor Complete This Ignition (HO2S Heater Monitoring Completed This Ignition Cycle). This parameter indicates whether the diagnostic check has been completed in the current engine/check cycle.
HO2S Heater Monitor Enabled This Ignition (HO2S Heater Control is On This Ignition Cycle). This parameter indicates whether diagnostic monitoring is enabled in the current engine/monitor cycle.
HO2S Htr. Bn. 1 or 2 Sensor 1 or 2 Circuit Status (Bank 1 or 2 Sensor Heater Circuit Status). This parameter indicates the state of the oxygen sensor heater control circuit. This parameter has a value of Fault (Faulty), if the oxygen sensor heater control circuit is open, shorted to ground, or shorted to a live wire. This parameter displays as Inderterminate (Not defined) until the circuit is turned on.
HO2S Htr. Bn. 1 or 2 Sensor 1 Command (Sensor 1 Heater Command Bank 1 or 2). This parameter indicates the state of the heater control circuit as specified by the controller command.
HO2S/O2S Monitor Complete This Ignition (HO2S/O2S monitoring is complete for this ignition cycle). This parameter indicates whether the diagnostic check has been completed in the current engine/check cycle.
HO2S/O2S Monitor Enabled This Ignition (HO2S/O2S control is enabled in this ignition cycle). This parameter indicates whether diagnostic monitoring is enabled in the current engine/monitor cycle.
HO2S Sensing Element Bn. 1 or 2 Sensor 1 or 2 (HO2S Sensor 1 or 2 Bank 1 or 2). Sensors are typically adjusted in the range of 20 - 300 ohms depending on temperature.
IAT Sensor (IAT sensor). This parameter indicates the temperature of the air entering the air intake system, determined from information received by the controller from the intake air temperature (IAT) sensor.
Ignition 0 Signal (Ignition signal 0). This parameter is set to On if the controller detects voltage at ignition input pin 0.
Ignition 1 Signal (Ignition signal 1). This parameter is set to On if the controller detects voltage at ignition input pin 1.
IMRC Solenoid Circuit Status (IMRC Valve Circuit Status). This parameter indicates the state of the Intake Manifold Runner Control (IMRC) circuit. This parameter has a value of Fault (Faulty), if the IMRC control circuit is open, shorted to ground, or shorted to a live wire. The parameter has a value of Indeterminate (Not defined) until the circuit is commanded to "on". This parameter may not change if a scan tool is used to turn on the IMRC valve.
IMRC Solenoid Command (IMRC Valve Command). This parameter indicates the state of the IMRC valve as commanded by the controller.
Initial Brake Apply Signal (Initial brake pedal press signal). This parameter indicates the brake pedal status as reported via the serial data circuit from the Electronic Brake Control Module (EBCM).
Injector 1-6 Command (Injector team 1-6). This parameter specifies the duration of the fuel injector on period or the pulse width specified by the controller command.
Injector PWM Bank 1 or 2 Average (Average PWM of injectors of cylinder banks 1 or 2). This parameter specifies the average pulse width for the fuel injectors of each bank of engine cylinders, as determined by the controller.
Int. CMP Angle Bank 1 or 2 (Angular position of the intake camshaft of cylinder bank 1 or 2)This parameter indicates the actual angular position in degrees of the intake camshaft.
Int. CMP Angle Bank 1 or 2 Variance (Inlet camshaft angular position discrepancy for cylinder bank 1 or 2). This parameter indicates in degrees the difference between the required and actual angular position of the intake camshaft.
Int. CMP Bank 1 or 2 Command (Intake camshaft command for cylinder bank 1 or 2). This parameter specifies the angular position in percentage of the maximum value for the intake camshaft, as commanded by the controller.
Int. CMP Solenoid Bn. 1 or 2 Circuit Status (Intake camshaft valve chain condition for bank 1 or 2). This parameter indicates the state of the intake camshaft position actuator solenoid control circuit. This parameter has a value of Fault (Faulty), if the camshaft timing actuator solenoid control circuit is open, shorted to ground, or shorted to a live wire. The parameter has a value of Indeterminate (Not defined) until the circuit receives an "on" command. This parameter may not change if a scan tool is used to turn on the camshaft position control actuator valve.
Knock Retard (Reducing ignition timing to eliminate detonation). This parameter specifies the amount by which the controller reduces the ignition timing in response to signals from the knock sensors.
KS 1 or 2 Signal (Signal KS 1 or 2). This parameter indicates the voltage supplied to the controller from the knock sensor (KS).
Loop Status Bn. 1 or 2 Sen. 1 (Sensor circuit status 1 cylinder bank 1 or 2). This parameter indicates the state of the fuel supply system, as commanded by the controller. Operation in closed loop mode means that the controller controls the fuel supply using the signals received from the oxygen sensors. When operating in open loop mode, the controller does not take into account the signals from the oxygen sensors and determines how much fuel should be supplied using the signals from other sensors.
Loop Status Bn. 1 or 2 Sen. 2 (Sensor circuit status 2 cylinder bank 1 or 2). This parameter indicates the status of the diagnostic oxygen sensors (with electric heater), commanded by the controller. The oxygen sensors do not operate in closed loop until the ECM determines that they are ready to operate.
LT FT Bn. 1 or Bn. 2 Cruise/Accel. (Long Term Adjustment Row 1 or 2 Constant Speed/Acceleration). This parameter specifies the long term fuel trim adjustment specified by the controller for cylinder bank 1 or 2 for constant speed and acceleration conditions.
LT FT Bn. 1 or Bn. 2 Idle/Decel. (Long-term adjustment correction row 1 or 2 i.h./braking). This parameter specifies the long term fuel trim adjustment specified by the controller for cylinder bank 1 or 2 for engine idling or deceleration conditions.
MAF Sensor (MAF sensor). This parameter indicates the measured air flow entering the engine under all operating conditions.
MAF Sensor (MAF sensor). This parameter indicates the voltage of the signal received by the controller from the mass air flow (MAF) sensor.
MIL Circuit Status (MIL Circuit Status). This parameter indicates the state of the malfunction indicator lamp control circuit. This parameter has a value of Fault (Faulty), if the MIL control circuit is open, shorted to ground, or shorted to a live wire. This parameter displays as Inderterminate (Not defined) until the circuit is turned on.
MIL Command (MIL Team). This parameter indicates the state of the malfunction indicator lamp control circuit as commanded by the controller.
Mileage Since DTC Cleared (Mileage since DTC reset). This parameter indicates the mileage since any diagnostic trouble code (DTC) was cleared from the controller memory.
Mileage Since First Failure (Mileage since first failure). This parameter indicates the mileage since the first emission-related malfunction.
Mileage Since Last Failure (Mileage since last malfunction). This parameter indicates the mileage since the last emission-related malfunction.
Mileage Since MIL Requested (Mileage since contacting MIL). This parameter indicates the distance traveled since the malfunction indicator lamp (MIL) was turned on by the controller.
Misfire Current Cyl. 1-6 (Current misfires cyl. 1-6). The scan tool displays values in the range of 0-200 counts. This parameter indicates the number of misfires detected during the last 200 firings in the cylinders. Under normal conditions, the counters may display some activity, but this activity should be almost the same for all cylinders and the numerical values should be small.
Misfire History Cyl. 1-6 (Misfire archive cyl. 1-6). The scan tool displays values in the range of 0-65535 counts. The misfire history counters indicate the total number of misfires detected on each cylinder. The misfire history counters will not update or show any activity until DTC P0300 is set. The misfire history counters will update every 200 cylinder firings.
Misfire Monitor Complete This Ignition (Misfire control for this ignition cycle is complete). This parameter indicates whether the diagnostic check has been completed in the current engine/check cycle.
Misfire Monitor Enabled This Ignition (Misfire control is enabled for this ignition cycle). This parameter indicates whether diagnostic monitoring is enabled in the current engine/monitor cycle.
Moderate Brake Apply Signal (Moderate brake pedal pressure signal). This parameter indicates the brake pedal status as reported via the serial data circuit from the Electronic Brake Control Module (EBCM).
PNP Switch ("Parking/neutral" switch). This parameter indicates whether the transmission mode selector is in the Park or Neutral position.
Power Enrichment (Power enrichment). This parameter indicates the controller operating mode state used to increase fuel delivery under certain acceleration conditions.
PRNDL Range (PRNDL range). This parameter indicates the transmission mode signal received by the controller, determined by directly decoding the PRNDL A, B, C and P signals received from the internal transmission mode switch (IMS).
Reduced Engine Power (Reduced engine power). This parameter indicates whether the controller commands a reduction in engine power depending on the state of the throttle actuator control (TAC) system.
Short Term FT Bank 1 or Bank 2 (Short-term fuel trim for cylinder bank 1 or 2).This parameter specifies the short-term fuel trim made by the controller based on the readings from O2 Sensor 1 or 2. If the O2 Sensor indicates a lean air/fuel mixture, the controller will increase fuel delivery, increasing the short-term fuel trim to a value greater than 0. If the O2 Sensor indicates a rich air/fuel mixture, the controller will decrease fuel delivery, decreasing the short-term fuel trim to a value less than 0.
Spark (Spark). This parameter indicates the amount of spark advance commanded by the ECM for the ignition control circuits. The ECM determines the desired spark advance.
Starter Relay Circuit Status (Starter Relay Circuit Status). This parameter indicates the state of the starter relay control circuit. This parameter has a value of Fault (Faulty), if the starter relay control circuit is open, shorted to ground, or shorted to a live wire. This parameter is displayed as Inderterminate (Not defined) until the relay control circuit is turned on. This parameter may not change if a scan tool is used to turn on the control circuit.
Starter Relay Command (Starter Relay Command). This parameter indicates the state of the starter relay control circuit as specified by the controller command.
Start Up ECT (ECT Launcher). This parameter indicates the engine coolant temperature at start-up, determined from data received by the controller from the engine coolant temperature (ECT) sensor.
Start Up IAT (Launcher IAT). This parameter indicates the temperature of the air entering the air intake system at startup, determined from information received by the controller from the intake air temperature (IAT) sensor.
Stop Lamp Pedal Switch (Brake pedal light switch). This parameter indicates the pedal position based on the signal sent to the controller from the brake light switch located on the pedal.
System Power Mode (System power consumption mode). This parameter indicates the position of the ignition switch.
TAC System Learned Counts (TAC System Training Steps). This parameter specifies the number of steps taken during the selection of operating parameters (training) of the throttle actuator control (TAC) system. The last training step is the 11th step.
TCC Brake Pedal Switch (TCC Brake Pedal Switch). This parameter indicates the pedal position based on the signal sent to the controller from the TCC switch located on the brake pedal.
TCC Status (TCC Status). This parameter indicates the state of the torque converter clutch (TCC) as determined by the command received.
TCM Requested Torque (TCM Torque Requirement). This parameter specifies the calculated torque value required by the controller.
TCM Torque Increase (TCM Torque Boost). This parameter indicates whether the controller responded to the request for increased torque.
TCS Torque Increase (TCS Torque Boost). This parameter indicates whether the controller responded to the request for increased torque.
TCM Torque Reduction Active (TCM Torque Reduction Active). This parameter indicates whether the transmission control module (TCM) is reducing torque.
TCS Torque Reduction Active (TCS torque reduction active). This parameter indicates whether the Electronic Brake and Traction Control Module (EBTCM) has determined that torque reduction is occurring.
Torque Delivered Signal (Received torque signal). This is the calculated value of torque supplied from the engine to the transmission, used by the Electronic Brake and Traction Control Module (EBTCM) to operate the traction control system.
Torque Request Signal (Required torque signal). The Electronic Brake and Traction Control Module (EBTCM) sends a torque request signal to the controller. This reduces transmission torque to reduce wheel slip under acceleration to provide traction control.
Total Fuel Trim Avg. This parameter shows the overall fuel trim from the idle/decelerate and stabilize/accelerate cells.
Total Misfire Count (Total number of misfires). This parameter indicates the total number of cylinder misfires that were identified by the controller in the last sample obtained over 200 crankshaft revolutions.
TP Desired Angle (Required TP angle). This parameter specifies the desired throttle position (TP) angle as commanded by the controller.
TP Indicated Angle (TP indicator angle). This parameter indicates the percentage of throttle opening (TP) calculated by the controller based on information from two TP sensors.
TP Sensor 1 (TP 1 sensor). This parameter displays the actual voltage of the throttle position sensor 1 signal circuit as measured by the controller.
TP Sensor 1 Learned Minimum (Selected minimum sensor 1 TP). This parameter indicates the minimum value of the throttle position (TP) sensor 1 signal, selected in the learning mode, recorded by the controller during the last learning procedure.
TP Sensor 2 (TP 2 sensor). This parameter displays the actual voltage of the throttle position sensor 2 signal circuit as measured by the controller.
TP Sensor 2 Learned Minimum (Selected minimum sensor 2 TP). This parameter indicates the minimum value of the throttle position (TP) sensor 2 signal, selected in the learning mode, recorded by the controller during the last learning procedure
TP Sensor 1 and 2 (TP sensors 1 and 2). This parameter has the value Disagree (Disagreement), if the controller detects that the signal voltage of TP sensor 1 is not in the correct relationship with TP sensor 2. The scan tool displays the Agree value under normal operating conditions (Agreed).
Traction Control Status (Traction control status). This parameter is set to Active if the Electronic Brake and Traction Control Module (EBTCM) is performing traction control.
Transmission Gear Selector Signal (Gearbox selector signal). This parameter indicates the position of the transmission selector lever as transmitted via the serial data circuit from the transmission control module (TCM).
Vehicle Security Status (Status of the car security system). This parameter indicates the status of the vehicle's alarm system.
Vehicle speed (Car speed). This parameter indicates the vehicle speed calculated by the transmission control module (TCM) using information received from the vehicle speed sensor (VSS).
Volumetric Efficiency (Volumetric efficiency). This parameter indicates the volumetric efficiency of the engine as calculated by the controller.
Diagnostic functions of the scan tool
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Diagnostic function of the scan tool
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Additional menu section(s)
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Description
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Camshaft Actuator (Camshaft timing control drive)
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Special Functions / Engine Output Controls / CMP Actuator System (Special functions / engine diagnostic functions / variable valve timing drive system)
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This function controls the variable valve timing actuator of the selected camshaft. The normal commanded state is NONE. The system will increase or decrease the angle of the selected camshaft in 5 degree increments up to 40 degrees crankshaft rotation. The scan tool initiates the test when the following conditions are met:
The system remains in a given state until it is cleared by a scanning device.
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Camshaft Actuator Solenoid (Camshaft timing control actuator valve)
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Special Functions / Engine Output Controls / CMP Actuator System (Special functions / engine diagnostic functions / variable valve timing drive system)
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This function controls the camshaft variable valve timing actuator valve for the selected camshaft. The normal commanded state is NONE. When commanded on/off, the ECM turns the camshaft variable valve timing actuator on or off. The scan tool initiates the test when the following conditions are met:
The system remains in a given state until it is cleared by a scanning device.
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Cylinder Power Balance (Cylinder power balance)
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Special Functions / Fuel System (Special functions / fuel system)
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Important: When using this feature, the Misfire Current and Misfire History settings may not change.
This function turns off the selected fuel injector. The normal specified state is NONE. The scan tool initiates the test when the following conditions are met:
If a fuel injector has been disabled for 30 seconds, control of that fuel injector cannot be resumed for 60 seconds.
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Engine Speed Control (Engine speed control)
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Special Functions / TAC System (Special functions / TAC system)
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This function controls the idle speed increase in increments of 25, 100, and 500 RPM, starting at the base speed and up to 1400 RPM. The scan tool initiates the test when the following conditions are met:
The engine will remain in the set state until it is cleared by the scan tool.
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SUPB adsorber purge valve
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Special Functions / Engine Output Controls / EVAP System (Special functions / engine diagnostic functions / Emission control system)
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Important: Using this diagnostic feature may not change the EVAP Purge Solenoid Command parameter.
This function controls the EVAP purge valve. The normal commanded state is NONE. The system will increase or decrease purge by changing the purge valve duty cycle in 10 percent increments from 0-100 percent. The system will remain in the commanded state until cleared by a scan tool or the fuel tank pressure (FTP) sensor reading is greater than -24 mmHg. (-12 inches of water.).
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EVAP Purge/Seal (Purging/sealing of the SUPB)
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Special Functions / Engine Output Controls / EVAP System (Special functions / engine diagnostic functions / Emission control system)
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Important: When using this diagnostic feature, the EVAP Purge Solenoid Command and EVAP Vent Solenoid Command parameters may not change.
This feature turns on both the EVAP purge valve and the EVAP vent valve to seal the EVAP. When turned on, the purge valve is commanded "0 percent" and the vent valve is commanded "on, no vent". The normal commanded state for both valves is NONE. Both valves remain in this commanded state until cleared by a scan tool or the fuel tank pressure (FTP) sensor reading is greater than -24 mmHg. (-12 inches of water.).
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EVAP Test (EVAP Test)
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Service Bay Test (Testing at a service station)
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This function enables the Service Bay Test mode to check the serviceability of the EMS system. The scan tool initiates the test when the following conditions are met:
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EVAP Vent Solenoid (Ventilation valve SUPB)
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Special Functions / Engine Output Controls / EVAP System (Special functions / engine diagnostic functions / Emission control system)
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Important: Using this diagnostic feature may not change the EVAP Vent Solenoid Command parameter.
This function controls the vent valve of the PSU. The normal set state is NONE. When the "On" command is given, the vent valve switches to the "No Vent" mode. The system remains in the set state until one of the following conditions is met:
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fuel injector balance
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Special Functions / Fuel System (Special functions / fuel system)
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This function turns on the fuel injector to check for proper flow through the fuel injector. The ECM will energize the selected fuel injector when the following conditions are met:
Fuel/pulse to a selected fuel injector can only be delivered once per ignition cycle.
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Fuel pump; Gasoline pump; Electric fuel pump
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Special Functions / Engine Output Controls (Special functions / engine diagnostic functions)
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This function monitors the fuel pump relay. The normal set state is NONE. The scan tool initiates the test when the following conditions are met:
When commanded "on/off", the ECM turns the fuel pump relay on/off. If the engine is running and the fuel pump relay is commanded "off", the engine will stall. The system remains in this commanded state for approximately 2 seconds or until cleared by a scan tool or the ECM detects vehicle movement.
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Fuel Trim Reset (Resetting fuel trim)
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Special Functions / Fuel System (Special functions / fuel system)
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This function resets the fuel trim data and parameters learned in the learning mode for the diagnostic oxygen sensors (with electric heater).
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Idle Learn Reset (Resetting idle parameters selected in training mode)
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Special Functions / TAC System (Special functions / TAC system)
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This feature allows the ECM to relearn the throttle position and idle speed parameters when the following conditions are met.
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IMRC Solenoid (IMRC valve)
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Special Functions / Engine Output Controls (Special functions / engine diagnostic functions)
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This function monitors the Intake Manifold Runner Control (IMRC) valve. The normal commanded state is NONE. When commanded on/off, the ECM turns the IMRC valve on or off. The scan tool initiates the test when the following conditions are met:
The system remains in a given state until it is cleared by a scanning device.
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Loop Status (Contour status)
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Special Functions / Engine Output Controls (Special functions / engine diagnostic functions)
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This function monitors the status of the oxygen sensor circuit (with electric heater) (HO2S). Commanded states include NONE, OPEN, and CLOSED. The normal commanded state is NONE. The circuit state is commanded to OPEN or CLOSED. The system remains in the commanded state until cleared by the scan tool.
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Malfunction indicator lamp
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Special Functions / Engine Output Controls (Special functions / engine diagnostic functions)
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This function monitors the Malfunction Indicator Lamp (MIL). The normal commanded state is NONE. When commanded on/off, the ECM turns the MIL on or off. The system remains in the commanded state until cleared by the scan tool.
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Throttle position
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Special Functions / TAC System (Special functions / TAC system)
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This function controls the throttle valve in 10 percent increments. The scan tool initiates the test when the following conditions are met:
The system remains in a given state until it is cleared by a scanning device.
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(Information taken from the official website chevyman.ru)