For 1990-2009 cars

### Diagnostic Instructions

• | 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.

### DTC Descriptor

DTC B0968 00: Parking Aid Indicator Circuit

### Diagnostic Fault Information

Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance
--- | --- | --- | --- | ---
B+ | B0968 00 | 1, 2, 3 | -- | --
Amber 1 Indicator Control | B0968 00 | 1 | 1 | --
Amber 2 Indicator Control | B0968 00 | 2 | 2 | --
Red Indicator Control | B0968 00 | 3 | 3 | --
1. Amber 1 LED Malfunction 2. Amber 2 LED Malfunction 3. Red LED Malfunction

### Circuit/System Description

The object alarm module directly controls the parking assist indicators located in the information center telltale assembly. The information center telltale consists of two amber and one red LED that indicate the distance of an object from the rear bumper. As objects become progressively closer to the bumper, the object alarm module will illuminate the LEDs in a sequence: one amber LED, both amber LEDs, and lastly, both amber LEDs and the red LED. The LEDs are supplied B+ by the object alarm module. Each LED is also discretely controlled by the object alarm module.

### Conditions for Running the DTC

• | DTC B1325 is not set

• | Ignition voltage is between 9-16 volts

### Conditions for Setting the DTC

The object alarm module detects that one of the three indicator control circuits or the B+ circuit is shorted to ground.

### Action Taken When the DTC Sets

• | Parking assist is disabled.

• | The object alarm module commands the red indicator ON.

• | The object alarm module sends a serial data message to the instrument panel cluster (IPC) to display SERVICE PARK ASSIST message in the driver information center (DIC) and a chime will sound.

### Conditions for Clearing

• | The DTC will transition to history when the fault is no longer present.

• | A history DTC will clear after 100 malfunction-free ignition cycles.

### 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

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

#### Scan Tool Reference

Control Module References for scan tool information

### Circuit/System Verification

Ignition ON, command the Rear Red LED, Rear Yellow LED 1, and Rear Yellow LED 2 ON and OFF with a scan tool. The appropriate indicator should turn on and off as commanded.

### Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the information center telltale assembly.
2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal A and ground.

⇒ | If the test lamp does not illuminate, test the B+ circuit terminal for a short to ground or an open/high resistance. If the circuit tests normal, replace the object alarm module.

3. Connect a test lamp between the B+ circuit terminal A and the appropriate control circuit listed below:

• | Amber 1 LED - terminal B

• | Amber 2 LED - terminal C

• | Red LED - terminal D

4. 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.

5. 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.

• | Information Center Telltale Assembly Replacement

• | Control Module References for object alarm module replacement, setup, and programming