Pinpoint Test T : B1B36:14, B1B38:14, B1B40:14, B1B42:14
- T1 RETRIEVE THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST
- Using a diagnostic scan tool, perform the PAM self-test.
- Check the PAM Diagnostic Trouble Codes (DTCs).
Are multiple front parking aid sensor Diagnostic Trouble Codes (DTCs) recorded?
Yes GO to T2 No For DTC B1B36:14, B1B38:14, B1B40:14 or B1B42:14, GO to T3 For all other Diagnostic Trouble Codes (DTCs), REFER to the DTC Chart in this information. - T2 CHECK THE FRONT BUMPER WIRING HARNESS
- Ignition OFF.
- Inspect the front bumper wiring harness for opens, shorts, grounds, or corrosion.
Is the front bumper wiring harness OK?
Yes GO to T3 No REPAIR or INSTALL a new front bumper wiring harness. - T3 CHECK THE FRONT PARKING AID SENSOR CIRCUITRY FOR OPENS
- Disconnect: Suspect Parking Aid Sensor(s).
- Disconnect: BCM C2280F.
- For DTC B1B36:14, measure:
Positive Lead Measurement / Action Negative Lead Refer to C2280F-7 Refer to C1431-1 Refer to C2280F-21 Refer to C1431-2 Refer to C2280F-35 Refer to C1431-3
- For DTC B1B38:14, measure:
Positive Lead Measurement / Action Negative Lead Refer to C2280F-7 Refer to C1430-1 Refer to C2280F-22 Refer to C1430-2 Refer to C2280F-35 Refer to C1430-3
- For DTC B1B40:14, measure:
Positive Lead Measurement / Action Negative Lead Refer to C2280F-7 Refer to C1428-1 Refer to C2280F-31 Refer to C1428-2 Refer to C2280F-35 Refer to C1428-3
- For DTC B1B42:14, measure:
Positive Lead Measurement / Action Negative Lead Refer to C2280F-7 Refer to C1429-1 Refer to C2280F-32 Refer to C1429-2 Refer to C2280F-35 Refer to C1429-3
Are the resistances less than 3 ohms?
Yes GO to T4 No REPAIR the circuit. - T4 CHECK THE FRONT PARKING AID SENSOR CIRCUITRY FOR SHORTS TO GROUND
- For DTC B1B36:14, measure:
Positive Lead Measurement / Action Negative Lead Refer to C1431-2 Ground
- For DTC B1B38:14, measure:
Positive Lead Measurement / Action Negative Lead Refer to C1430-2 Ground
- For DTC B1B40:14, measure:
Positive Lead Measurement / Action Negative Lead Refer to C1428-2 Ground
- For DTC B1B42:14, measure:
Positive Lead Measurement / Action Negative Lead Refer to C1429-2 Ground
Is the resistance greater than 10, 000 ohms?
Yes If all of the parking aid sensors recorded Diagnostic Trouble Codes (DTCs), GO to T5 If one or more (but not all) parking aid sensor(s) recorded Diagnostic Trouble Codes (DTCs), INSTALL a new sensor(s) for the one(s) in question. REFER to: Front Parking Aid Sensor . No REPAIR the circuit. - For DTC B1B36:14, measure:
- T5 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
- Ignition OFF.
- Disconnect and inspect all BCM connectors.
- 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
- Reconnect the BCM connectors. Make sure they seat and latch correctly.
- Operate the system and determine if the concern is still present.
Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, Refer to BCM GUIDED ROUTINE TESTING No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.