B1B48:12

Parking Aid

Pinpoint Test C: DTCs B1B44:12, B1B46:12, B1B48:12 And B1B50:12

Refer to Wiring Diagram Set 131, Parking Aid for schematic and connector information. Diagrams By Number

Normal Operation

The Parking Aid Module (PAM) supplies a reference voltage and signal return to the parking aid sensors. A fault condition occurs when the PAM (Parking Aid Module) detects a short to voltage on the parking aid sensor signal circuit.





This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors

- Parking aid sensor

- Parking aid bumper harness

- PAM (Parking Aid Module)

PINPOINT TEST C : DTCs B1B44:12, B1B46:12, B1B48:12 AND B1B50:12

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

C1 RETRIEVE THE DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND PAM (Parking Aid Module) SELF-TESTS

- Check the recorded PAM (Parking Aid Module) DTCs from the continuous and on-demand self-tests.

Are multiple DTCs recorded?

Yes
GO to C2.

No
For DTCs B1B44:12, B1B46:12, B1B48:12 and B1B50:12, GO to C3.

For all others, REFER to DTC Charts. Parking Aid

C2 CHECK THE BUMPER WIRING HARNESS

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

Is the bumper wiring harness OK?

Yes
GO to C3.

No
REPAIR or INSTALL a new bumper wiring harness. CLEAR the DTCs. REPEAT the self-test.

C3 CHECK THE SENSOR CIRCUITRY FOR SHORTS TO VOLTAGE

- Ignition OFF.

- Disconnect: Suspect Parking Aid Sensor C4009, C4010, C4011 and C4012.

- Disconnect: PAM (Parking Aid Module) C4014.

- Ignition ON.

- Measure the voltage between the suspect parking aid sensor pin 2, harness side and ground as follows:









Is any voltage present?

Yes
REPAIR the circuit in question. CLEAR the DTCs. TEST the system for normal operation.

No
GO to C4.

C4 CHECK THE PARKING AID SENSORS

- Install a known good parking aid sensor(s) for each of the suspect parking aid sensor(s).

- Clear the DTCs. Repeat the self-test.

- Test the system for normal operation.

Is the concern still present?

Yes
If all the parking aid sensors recorded DTCs prior, GO to C5.

If one or more parking aid sensor(s) recorded DTCs, INSTALL a new sensor(s) for the one in question. REFER to Parking Aid Sensor . CLEAR the DTCs. TEST the system for normal operation.

No
REPAIR the circuit in question. CLEAR the DTCs. TEST the system for normal operation.

C5 CHECK FOR CORRECT PAM (Parking Aid Module) OPERATION

- Disconnect the PAM (Parking Aid Module) connector.

- Check for:
- corrosion

- damaged pins

- pushed-out pins


- Connect the PAM (Parking Aid Module) connector and make sure it seats correctly.

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

Is the concern still present?

Yes
INSTALL a new PAM (Parking Aid Module). REFER to Parking Aid Module (PAM) . TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.