Circuit Description
The Parking Assist System informs the driver of the system fault by warning indicator and the alarm.
| • | The fault recognition by warning indicator--When the ignition switch is first turned ON, the ignition voltage is supplied from fuse F18 in I/P fuse block to find the parking assist system (PAS) control module at input terminal 1. The PAS control module respond by illuminating the warning indicator on the cluster for 4 seconds and then turning it off while the control module performs self-test on the PAS. At this time if the control module finds the malfunction in the system, the control module will continue to illuminate the warning indicator until the malfunction is removed. |
| • | The fault recognition by the alarm--When ignition switch is being ON, if the gear select lever is moved into "R", the PAS control module perform the self-test and ring the alarm. If system fault do not exist, control module ring the alarm just 1 time for approximately 0.3 second. If system fault exist, control module ring the alarm 3 times for approximately 1.5 seconds and that cycle is repeated 5 times. |
Diagnostic Aids
If the warning indicator is illuminated by the malfunction, perform the On-Board Diagnostic Features error check before performing the parking assist system malfunction check.
Step | Action | Value(s) | Yes | No | ||||
|---|---|---|---|---|---|---|---|---|
1 |
Does the indicator illuminate for 4 seconds and then off? | -- | System OK | Go to Step 2 | ||||
2 | Position the gear select lever into "R". Does the parking assist module ring the alarm as normal Assist Warning alarm mode (only 1 time for 0.3 second and then off)? | -- | Go to Step 3 | |||||
3 | Perform the self sensor error check. Refer to "Self Sensor Error Check". Did you find and correct the condition? | -- | Go to Step 1 | Go to Step 4 | ||||
4 |
Is the voltage approximately the specified value? | 8 V | Go to Step 6 | Go to Step 5 | ||||
5 |
Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 7 | ||||
6 | Check for following circuits of the alarm wiring connector for the indicated condition.
Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 9 | ||||
7 |
Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 8 | ||||
8 | Check for an open of the ground circuit at control module wiring connector. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 12 | ||||
9 | Check for an open or short to ground of the circuits between the BCM and parking assist control module. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 10 | ||||
10 | Check for an open or a short to ground of park brake switch circuit. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 11 | ||||
11 |
Does the indicator illuminate for 4 seconds and then off? | -- | Go to Step 13 | Go to Step 12 | ||||
12 |
Did you complete the replacement? | -- | Go to Step 13 | -- | ||||
13 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 1 |
