Checking the Parking Assist Warning Indicator
Step | Operation | Values | Yes | No |
1 |
Is the lamp correct?
|
-
|
Go to Step 3
|
Go to Step 2
|
2 |
Replace the warning indicator lamp.
|
-
|
-
|
-
|
3 |
Check the park assist fuse F13 in the instrument panel fuse box.
Has fuse F13 blown?
|
-
|
Go to Step 4
|
Go to Step 5
|
4 |
|
-
|
-
|
-
|
5 |
Is the voltage within the specified range?
|
9 - 16 V
|
Go to Step 7
|
Go to Step 6
|
6 |
Repair the open circuit in the power supply to fuse F13.
|
-
|
-
|
-
|
7 |
Test the circuit between fuse F13 and instrument cluster for an open or short to ground.
Has the cause been found and fixed?
|
-
|
System OK
|
Go to Step 8
|
8 |
Has the cause been found and fixed?
|
-
|
System OK
|
Go to Step 9
|
9 |
Check the circuit between ground and controller for an open.
Has the cause been found and fixed?
|
-
|
System OK
|
Go to Step 10
|
10 |
Has the replacement been completed?
|
-
|
Go to item "Parking Assist System Malfunction Check".
|
-
|
Checking the health of the parking aid system
Circuit Description
The parking assist system informs the driver of a system malfunction by means of a warning indicator and an audible signal.
1. Determination of a malfunction by a warning indicator
When the ignition is first turned on, ignition voltage is supplied from fuse F18 in the instrument panel fuse box to input terminal 1 to detect the parking assist controller (PAS). In response, the PAS controller illuminates the instrument cluster warning light for 4 seconds and then turns it off while the controller performs the PAS system self-test. If during this time the controller detects a fault in the system, the warning indicator lights up on command until the fault is cleared.
2. Determination of a malfunction by a sound signal
When the ignition is turned on, if the shift lever is moved to the "R", the PAS controller performs a self-test and sounds an audible signal. If there are no faults in the system, the controller emits one single beep for approximately 0.3 seconds.
When a fault is detected, the controller emits 5 times a series of 3 beeps lasting approximately 1.5 seconds.
Diagnostic Recommendations
If the warning light is illuminated due to a malfunction, perform a sensor self-test before performing a Parking Assist System test. To perform a sensor self test, see paragraph "Sensor self-test" in this section.
Step | Operation | Values | Yes | No |
1 |
Does the indicator light on for 4 seconds and then turn off?
|
-
|
System OK
|
Go to Step 2
|
2 |
Set the gear lever to position R.
Does the parking assist controller turn on the warning signal in the normal parking assist alarm mode (1 time for 0.3 seconds, then turn off)?
|
-
|
Go to item "Checking the Parking Assist Warning Indicator".
|
Go to Step 3
|
3 |
Perform a sensor self test. See paragraph "Sensor self-test" in this section.
Has the cause been found and fixed?
|
-
|
Go to Step 1
|
Go to Step 4
|
4 |
Is the voltage close to the specified value?
|
≈ 8 V
|
Go to Step 6
|
Go to Step 5
|
5 |
Has the cause been found and fixed?
|
-
|
Go to Step 13
|
Go to Step 7
|
6 |
Test the following circuits at the horn wiring connector for the following conditions:
Has the cause been found and fixed?
|
-
|
Go to Step 13
|
Go to Step 9
|
7 |
Has the cause been found and fixed?
|
-
|
Go to Step 13
|
Go to Step 8
|
8 |
Check for an open in the ground circuit at the controller connector.
Has the cause been found and fixed?
|
-
|
Go to Step 13
|
Go to Step 12
|
9 |
Test the circuits between the BCM and the parking assist control module for an open or short to ground.
Has the cause been found and fixed?
|
-
|
Go to Step 13
|
Go to Step 10
|
10 |
Check the parking brake switch circuit for an open or short to ground.
Has the cause been found and fixed?
|
-
|
Go to Step 13
|
Go to Step 11
|
11 |
Does the indicator light on for 4 seconds and then turn off?
|
-
|
Go to Step 13
|
Go to Step 12
|
12 |
Has the replacement been completed?
|
-
|
Go to Step 13
|
-
|
13 |
Operate the system to check if the problem has been fixed.
Has the cause been removed?
|
-
|
System OK
|
Go to Step 1
|
Sensor self-test
Circuit Description
If the warning light or horn indicates a problem, the sensor circuit must be diagnosed before examining the rest of the parking assist circuits. The parking assist controller can perform a health check for each rear obstacle sensor using the sensor's self-check function. The following describes the procedure to be followed to enter the Sensor Check Mode.
1. Turn on the ignition.
2. Turn the parking brake switch on/off 3 times by applying and disengaging the parking brake 3 times within 10 seconds of turning the ignition on.
3. The controller will enter the sensor check mode.
Sensor Beep Codes
If no faults are found in the sensor circuit, the controller will issue a normal beep (1 time lasting 0.3 seconds).
When a fault is detected in the sensor circuitry, an audible signal will sound, the shape of which depends on the type of fault, as described below.
Left corner sensor
Left middle sensor
Right middle sensor
Right Angle Sensor
- 1 cycle lasts 3 seconds.
- The sequence of beeps described above is performed for 2 cycles.
- If a fault is detected in multiple sensors, the controller will repeat the beep code twice for all faulty sensors in the following order: left corner → left middle → right middle → right corner.
Step | Operation | Values | Yes | No |
1 |
Does the indicator light on for 4 seconds and then turn off?
|
-
|
System OK
|
Go to Step 2
|
2 |
Is there an audible signal corresponding to normal operation (only 1 time lasting 0.3 seconds)?
|
-
|
Go to item "Checking the Parking Assist Warning Indicator".
|
Go to Step 3
|
3 |
Determine which sensor circuit has a malfunction using the description of the sensor's audible trouble codes.
Has the sensor circuit with a suspected fault been identified?
|
-
|
Go to Step 4
|
-
|
4 |
Check for poor contact with suspicious sensors.
Has the cause been found and fixed?
|
-
|
Go to Step 11
|
Go to Step 5
|
5 |
Is the voltage close to the specified value?
|
≈ 8 V
|
Go to Step 8
|
Go to Step 6
|
6 |
Has the cause been found and fixed?
|
-
|
Go to Step 11
|
Go to Step 7
|
7 |
Check for an open or short in the low reference circuit of the suspect sensors.
Has the cause been found and fixed?
|
-
|
Go to Step 11
|
Go to Step 10
|
8 |
Check the parking assist controller for contact problems.
Has the cause been found and fixed?
|
-
|
Go to Step 11
|
Go to Step 9
|
9 |
Replace suspicious rear obstacle sensors.
Replacement completed?
|
-
|
Go to Step 11
|
-
|
10 |
Has the replacement been completed?
|
-
|
Go to Step 11
|
-
|
11 |
Operate the system to check if the problem has been fixed.
Has the cause been removed?
|
-
|
Go to Step 1
|
-
|