Diagnostic Routine B

Diagnostic Routine B

Diagnostic Overview

B1B44:14, B1B46:14, B1B48:14, B1B50:14

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

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions






Pinpoint Test

NOTE: Before disconnecting the PAM (Parking Aid Module) or the sensors, verify that the connectors are properly seated and latched.

1. RETRIEVE THE DTCs (Diagnostic Trouble Codes) FROM THE PAM (Parking Aid Module) SELF-TEST

1. Check the PAM (Parking Aid Module) DTCs (Diagnostic Trouble Codes) from the self-test.

Are multiple DTCs (Diagnostic Trouble Codes) recorded?








2. CHECK THE CONNECTORS FOR CORRECT LATCHING AND THE BUMPER WIRING HARNESS FOR DAMAGE

1. Inspect the PAM (Parking Aid Module) and sensor connectors for correct latching by pulling on the latched connector.

2. Inspect the bumper wiring harness for opens, shorts or corrosion.

Are the connectors correctly latched and the bumper wiring harness OK?








3. CHECK THE SENSOR CIRCUITRY FOR SHORTS TO GROUND

1. Ignition OFF.

2. Disconnect: Suspect Parking Aid Sensor.

3. Disconnect: PAM (Parking Aid Module).

4. Measure:





Are the resistances greater than 10,000 ohms?








4. CHECK THE SENSOR CIRCUITRY FOR OPENS

1. Measure:





Are the resistances less than 3 ohms?








5. 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?