Pinpoint Test A : DTC (Diagnostic Trouble Code) B129C:12, DTC (Diagnostic Trouble Code) B129D:12
- A1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST
- Ignition ON.
- Using a diagnostic scan tool, perform the PAM self-test.
- Check the PAM Diagnostic Trouble Codes (DTCs) from the self-test.
Are multiple front parking aid sensor Diagnostic Trouble Codes (DTCs) recorded?
Yes GO to A2 No * For DTC B129C:12 or DTC B129D:12, GO to A3
* For all other PAM Diagnostic Trouble Codes (DTCs), REFER to PAM DTC Chart . - A2 CHECK THE FRONT BUMPER WIRING HARNESS
- Inspect the front bumper wiring harness for opens, shorts, grounds or corrosion.
Is the front bumper wiring harness OK?
Yes GO to A3 No REPAIR or INSTALL a new front bumper wiring harness. - A3 CHECK THE SENSOR SIGNAL RETURN CIRCUIT FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect suspect front active park assist sensor(s) C1607 (DTC B129C:12) or C1608 (DTC B129D:12).
- Disconnect BCM C2280C.
- Ignition ON.
- Measure:
DTC B129C:12
Positive Lead Measurement / Action Negative Lead C1607-2 Ground DTC B129D:12
Positive Lead Measurement / Action Negative Lead C1608-2 Ground
Is any voltage present?
Yes REPAIR the circuit. No GO to A4 - A4 CHECK THE SENSOR VOLTAGE SUPPLY AND SIGNAL RETURN CIRCUITS FOR A SHORT TOGETHER
- Ignition OFF.
- Measure:
DTC B129C:12
Positive Lead Measurement / Action Negative Lead C1607-2 C1607-1 DTC B129D:12
Positive Lead Measurement / Action Negative Lead C1608-2 C1608-1
Is the resistance greater than 10, 000 ohms?
Yes GO to A5 No REPAIR the affected circuits. - A5 CHECK THE FRONT ACTIVE PARK ASSIST SENSOR
- Connect BCM C2280C.
- Ignition ON.
- Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs) and repeat the self-test.
Is DTC B129C:12 or DTC B129D:12 still present?
Yes GO to A6 No INSTALL a new front active park assist sensor for the one in question. REFER to: Front Active Park Assist Sensors . - A6 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
- Ignition OFF.
- Disconnect and inspect all BCM connectors and related in-line 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 and related in-line 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 Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, Refer to BCM Guided Routine . 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.