• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Rear Parking Display Supply Voltage | B0968 00 | B0968 00 | -- | -- |
Left Amber Indicator Control | B0968 00 | B0968 00 | 1 | -- |
Center Amber Indicator Control | B0968 00 | B0968 00 | 2 | -- |
Rear Parking Assist Red Indicator Control | B0968 00 | B0968 00 | 3 | -- |
1. Lower amber LED malfunction 2. Center amber LED malfunction 3. Red LED malfunction |
The object alarm module directly controls the rear parking assist (RPA) display. The RPA display consists of 2 amber and one red LED that indicate the distance of an object from the rear bumper. The object alarm module will also use an audible warning by sending a serial data message to the radio. Each object sensor is a 3-wire sensor that is both a transmitter and a receiver that includes a signal circuit, a low reference circuit, and an 8-volt supply voltage circuit. The object alarm module supplies 8 volts to the object sensors via the object sensor supply voltage circuit and provides ground via the low reference circuit. The object alarm module triggers the sensors in a sequential loop and after each sensor transmits, the object alarm module uses the echo or signal return to calculate the distance and position of an object from the rear bumper.
Object Detection Description and Operation
Control Module References for scan tool information
⇒ | If the test lamp does not illuminate, test the voltage supply circuit terminal for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the object alarm module. |
• | Left amber LED control circuit terminal B |
• | Center amber LED control circuit terminal C |
• | Red LED control circuit terminal D |
⇒ | If the test lamp does not illuminate, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the object alarm module. |
⇒ | If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, test or replace the object alarm module. |
• | Left amber LED control circuit terminal B |
• | Center amber LED control circuit terminal C |
• | Red LED control circuit terminal D |
⇒ | If the component does not perform as specified, replace the RPA display. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for the object alarm module replacement, setup, and programming |