B1B52:14

Diagnostic Routine F

Diagnostic Overview

B1B52:12, B1B52:14

Refer to Wiring Diagram Set 131 for schematic and connector information Electrical Diagrams.

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions






Pinpoint Test

1. CHECK THE SPEAKER CONNECTOR FOR CORRECT LATCHING

1. Ignition OFF.

2. Inspect the parking aid speaker connector for correct latching by pulling on the latched connector.

Is the connector latched?








2. MEASURE THE PARKING AID SPEAKER RESISTANCE

1. Disconnect: Parking Aid Speaker.

2. Measure:





Is the resistance between 40 and 60 ohms?








3. CHECK THE PARKING AID SPEAKER CIRCUITRY FOR A SHORT TO GROUND

1. Disconnect: PAM (Parking Aid Module).

2. Measure:





Are the resistances greater than 10,000 ohms?








4. CHECK THE PARKING AID SPEAKER CIRCUITRY FOR AN OPEN

1. Measure:





Are the resistances less than 3 ohms?








5. CHECK THE PARKING AID SPEAKER CIRCUITS FOR A SHORT TO EACH OTHER

1. Measure:





Is the resistance greater than 10,000 ohms?








6. CHECK THE PARKING AID SPEAKER CIRCUITRY FOR A SHORT TO VOLTAGE

1. Disconnect: Parking Aid Speaker.

2. Disconnect: PAM (Parking Aid Module).

3. Ignition ON.

4. Measure:





Is any voltage present?








7. CHECK FOR CORRECT PAM (Parking Aid Module) OPERATION

1. Disconnect and inspect the PAM (Parking Aid Module) connector.

2. Repair:

- corrosion (install new connector or terminals- clean module pins)
- damaged or bent pins- install new terminals/pins
- pushed-out pins- install new pins as necessary

3. Reconnect the PAM (Parking Aid Module) connector. Make sure it seats and latches correctly.

4. Operate the system and determine if the concern is still present.

Is the concern still present?