Electrical connector
X-1: Side Harness Electrical Connector
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Electrical connector J1
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Electrical connector J2
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1
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grounding
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5
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Output shaft speed sensor (-)
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2
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Line pressure control solenoid valve
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6
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Input shaft speed sensor (-)
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3
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Torque converter clutch lock-up solenoid valve (-)
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7
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Signal "B" (Automatic range switch)
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4
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Solenoid valve for pressure control in hydraulic lines (+)
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8
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Signal "A" (Automatic range switch)
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5
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Torque converter clutch lock-up solenoid valve (+)
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14
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Output shaft speed sensor (+)
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6
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Accumulator battery
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16
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Input shaft speed sensor (+)
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7
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High speed CAN (-)
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19
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Signal "PA" (Automatic range switch)
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8
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High speed CAN (-)
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20
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Signal "C" (Automatic range switch)
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11
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Transmission Fluid Temperature Sensor (+)
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21
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Ignition
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12
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Transmission Fluid Temperature Sensor (-)
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22
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Voltage
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13
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SS4 shift solenoid valve
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-
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-
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14
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SS3 shift solenoid valve
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-
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-
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15
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Shift solenoid valve SS2
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-
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-
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16
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Shift solenoid valve SS1
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-
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-
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17
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High speed CAN (+)
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-
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-
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18
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High speed CAN (+)
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-
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-
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19
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Shift pressure control solenoid valve (-)
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-
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-
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21
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Shift pressure control solenoid valve (+)
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-
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-
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22
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SS5 shift solenoid valve
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-
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-
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23
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grounding
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-
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-
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24
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Auxiliary trigger serial data
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-
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-
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Checking harnesses and electrical connectors
1. Fault condition simulation test
Test by reproducing the symptom conditions based on the vehicle owner's description. See conditions listed below.
- Road conditions in the event of a malfunction, speed, acceleration, braking, straight-line driving, turning, air temperature, weather conditions, etc.
2. Check the articulation of the electrical connectors.
Check connectors visually and for joint tightness.
- Connector dismemberment
- Contact corrosion
- Deformation of contacts or joint leakage
3. Check the wiring harness for an internal open.
Separate the connectors at both ends of the harness and check the resistance between the corresponding contacts of the blocks.
- Normal state: 1 ohm or less (no break)
- Faulty state:? Ohm (chain break)
Note: Measure the resistance by slightly shaking the tourniquet in the vertical and horizontal directions.
An open circuit in the middle of the harness is very rare. In most cases, contact failure occurs in the connector block.
4. Check the harness for a short circuit.
Disconnect the connectors at both ends of the harness and check the resistance between the corresponding contacts of the block and the body ground.
- Normal state: 1 MΩ or higher (no short circuit)
- Fault condition: low resistance (short circuit)
Measure the resistance between two pins of the same connector (except for power and ground contacts).
- Normal state: 1 MΩ or higher (no short circuit)
- Fault condition: low resistance (short circuit)
Note: Measure the resistance by slightly shaking the tourniquet in the vertical and horizontal directions.
The cause of a short circuit is often a malfunction in the places where the harness is attached to the body.
5. Intermittent contact in the connector.
If no other reason for the occurrence of the DTC could be established, most often this cause is an intermittent contact of the electrical connector.
You should inspect and clean the connector pads and clear the entered fault code.
Road test
Road tests of the car are carried out in order to diagnose signs of malfunction and verify the correctness of the repair.
Before carrying out a road test, ensure that the following condition is met. Oil warmed up (50°С (122°F) ~ 80°С (176°F)).
1. D-band test
- Check that the upshift, downshift, downshift, and interlock at the moment of gear shifting are working properly.
- Perform engine braking.
- Check for unusual jolts, noise, or hard shifting.
2. Range test "P"
Stop the car on a slope (over 5°), move the gear lever to the position "P" and release the parking brake.
Make sure the pawl of the park lock mechanism does not allow the vehicle to roll.
Health check
The following conditions must be met before testing.
- Oil warmed up (50°C (122°F) ~ 80°C (176°F)).
- The switches for air conditioning, lighting, etc. are in the Off position.
Engine stop test
The purpose of the engine shutdown test is to check the overall performance of the automatic transmission and the engine by determining speeds in the ranges "D" And "R", at which the engine stalls.
1. Block all four wheels with brake shoes and apply the parking brake. Make sure the vehicle is stationary.
2. Press the brake pedal with your left foot.
3. Switch to ranges "D" And "R", fully depress the gas pedal with your right foot.
Check the RPM at which the engine stalls.
Norm
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2.4L
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2640 rpm
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3.2L/2.0S Diesel
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2.489 rpm
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Note: It is not allowed to test for more than 5 seconds in a row, because. while the oil overheats.
An interval of at least 1 minute should be maintained between tests.
Engine stop test results
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Cause of malfunction
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Below normal
in both ranges "D" And "R"
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Insufficient engine power
Torque Converter Overrunning Clutch Malfunction
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Above normal
only "D"
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Low pressure in hydraulic lines
Malfunction (slippage) forward clutch (C1)
Overrunning Clutch #2 Malfunction (F2)
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Above normal
only "R"
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Low pressure in hydraulic lines
Malfunction (slippage) direct drive clutches (C2)
Malfunction (slippage) 1st gear and reverse brakes (B3)
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Above normal
in both ranges "D" And "R"
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Low pressure in hydraulic lines
B5 brake fault
Oil filter failure (blockage)
Oil leakage in the circuits of each range
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Switch delay test
This type of test determines the time until a slight push when the gear lever is moved from the position "N" V "D" and from "N" V "R" with the engine running at idle.
The shift delay test measures the condition of hydraulic systems and friction clutches/brakes.
1. Block all four wheels with brake shoes and apply the parking brake. Make sure the vehicle is stationary.
2. Determine the delay time by measuring the time with a stopwatch from the moment the gear lever is moved from the position "N" V "D" and from "N" V "R" until a slight jolt occurs.
"N" → "D"
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less than 0.7 s
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"N" → "R"
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less than 1.2 s
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Note: It is necessary to measure three times and then determine the average value.
An interval of at least 1 minute should be maintained between tests. (To relieve residual pressure from clutches/brakes.)
Switch delay test results
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Cause of malfunction
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More than normal for "N" → "D"
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Low pressure in hydraulic lines
Malfunction (slippage) forward clutch (C1)
Freewheel Malfunction #2 (F2)
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More than normal for "N" → "TO"
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Low pressure in hydraulic lines
Malfunction (slippage) direct drive clutches (C2)
Malfunction (slippage) 1st gear and reverse brakes (B3)
B5 brake fault (slippage)
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Hydraulic test
Necessary equipment
J-21867-50 Hydraulic Line Pressure Adapter
J-21867 Manometer
A hydraulic test is carried out to determine the operating conditions inside the automatic transmission by measuring the line pressure for the ranges "D"/"R" "at idle"/"when the engine is stopped".
1. Block all four wheels with brake shoes and apply the parking brake. Make sure the vehicle is stationary.
2. Install J-21867 and J-21867-50 into the hydraulic line leak test hole.
3. With your left foot, fully depress the brake pedal, switch to ranges "D" And "R" and measure the pressure "at idle"/"when the engine is stopped".
Pressure in hydraulic drive lines, MPa (pound per sq. inch)
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D
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R
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At idle
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0.33-0.39 (47.86-56.56)
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0.50-0.62 (72.52-89.92)
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When the engine is stopped
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1.28-1.40 (185.65-203.05)
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1.71-1.99 (248.01-288.63)
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Note: It is not allowed to test for more than 5 seconds in a row, because. while the oil overheats.
An interval of at least 1 minute should be maintained between tests.
Check for oil leaks after installing the pressure gauge adapter.
Hydraulic test results
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Cause of malfunction
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Above normal
in both ranges "D" And "R"
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Malfunction of the solenoid valve for adjusting the pressure in the hydraulic lines
Primary Regulator Valve Malfunction
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Below normal
in both ranges "D" And "R"
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Malfunction of the solenoid valve for adjusting the pressure in the hydraulic lines
Primary Regulator Valve Malfunction
Oil pump malfunction
B5 brake fault
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Below normal
only "D"
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Low pressure in hydraulic lines
B5 brake fault (slippage)
Hydraulic circuit malfunction "D"
Forward Clutch Malfunction (C1)
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Below normal
only "R"
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Hydraulic circuit malfunction "R"
Direct clutch failure (C2)
1st gear and reverse brake failure (B3)
B5 brake fault
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Manual override test
This type of test is used to determine whether the fault is electrical or mechanical.
1. Disconnect the shift solenoid electrical connector. Verify that in manual shift mode the ranges and gears are in accordance with the table below.
Range
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Broadcast
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D
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4th gear
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R
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rear
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Note: Only the shift solenoid valve harness should be disconnected.
Checking the status of the unit
Drive disc runout
- Check disc runout for correctness.
Norm
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within 0.2mm (0.008 inch)
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Action:
If the runout is not correct, replace the disc.
If excessive wear or blockage of the torque converter bushing or oil pump is found, replace the torque converter and automatic transmission.
Note:
- When assembling the torque converter and drive plate, use bolts of the required type and length. When the bolt rests against the front cover of the torque converter, the friction lining of the lockup clutch is damaged. The result is a type of error "complete blockage".
- Do not tighten bolts with an impact wrench.
Bending and obstruction of radiator tubes
- Check radiator tubes for excessive kinking, deformation, or low flow area.
Action: Replace defective parts.
- Supply air at a pressure of 2 kg/cm? into the radiator inlet. Make sure the tube is open by watching the air escape from the other end.
Action: Clean the pipeline.
Input shaft speed sensor and output shaft speed sensor
1. Remove the input or output shaft speed sensor connector, connect 12 V power and 100 ohm resistance and an ohmmeter to the contact. (Observe polarity)
2. Check the high and low signal current by shaking the magnet from side to side near the tip of the speed sensor. (Gap within 5 mm.)
Note: When checking, be sure to observe the direction of movement of the magnet from the bolt hole to the sensor itself. Otherwise, the current value may not change.
Signal
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Current strength (mA)
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HIGH
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12.0-16.0
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LOW
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4.0-8.0
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Action: If the test reveals a problem, replace the input or output shaft speed sensor.
Gearbox range switch
- Disconnect the automatic transmission range switch connector and check the circuits of each range for an open, according to the diagram.
Action: If a malfunction is found during the test, replace the automatic transmission range switch.
Transmission Fluid Temperature Sensor
- Check the resistance between the contacts of the transmission fluid temperature sensor at 10°C (50°F) and at 110°C (230°F).
Norm
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10°С (50°F)
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110°C (230°F)
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5.80~7.09 kΩ
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0.231~0.263 kΩ
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Action: If the test reveals a malfunction, replace the transmission fluid temperature sensor.
- Grounding the transmission fluid temperature sensor
- Transmission Fluid Temperature Sensor Signal
Switching solenoid valve (№1, №2, №3, №4, №5)
1. Check the resistance between the contacts of all switching valves and body ground.
Action: If a fault is found during the test, replace the valves.
Note:
- Recheck resistance at 20°C (68°F), if at temperatures other than 20°С (68°F), it did not match the normative value.
- At higher temperatures, the resistance value may approach infinity.
2. Check the operation of the switching valves.
- Solenoid valve (№ 1, 4) (Normal opening type)
Battery power not being supplied
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Air leak
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Battery power supplied
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No air leakage
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- Solenoid valve (№ 2, 3, 5) (Normal closure type)
Battery power not being supplied
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No air leakage
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Battery power supplied
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Air leak
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Action: If a fault is found during the test, replace the valves.
Note: Do not damage the filter of the solenoid valve.
Solenoid pressure control valve
- Check the resistance between the contacts of all pressure control valves.
Action: Replace valve block assembly. (Separate replacement of the solenoid valve is not allowed)
Note:
- Recheck resistance at 20°C (68°F), if at temperatures other than 20°С (68°F), it did not match the normative value.
- At higher temperatures, the resistance value may approach infinity.
On-vehicle repairs (table)
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