Diagnostic Instructions
Circuit/System Description
The parking assist indicator is located in the interior rear of the vehicle as part of the information center telltale assembly. The indicator contains three LEDs: two amber and one red. The object alarm module controls these three LEDs as a visual indicator
of how close the vehicle bumper is to an object. The object alarm module supplies voltage to each of the LEDs and commands each LED on by supplying an individual ground.
Reference Information
Schematic Reference
Object Detection Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Object Detection Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Ignition ON, perform the scan tool LED Test. Each of the three LEDs should illuminate during the test cycle.
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the information center telltale assembly.
- Ignition ON, verify that a test lamp illuminates between the voltage control circuit terminal A and ground.
⇒ | If the test lamp does not illuminate, test the voltage control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the object alarm module. |
- Connect a test lamp between the voltage control circuit terminal A and the appropriate LED control circuit:
• | Left amber LED - terminal B |
• | Center amber LED - terminal C |
- Command the appropriate LED ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
⇒ | If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the object alarm module. |
⇒ | If the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the object alarm module. |
- If all circuits test normal, test or replace the information center telltale assembly.
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic procedure.