Pinpoint Test D : DTC (Diagnostic Trouble Code) B13F3:12, DTC (Diagnostic Trouble Code) B13F4:12
- D1 CHECK 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) from the self-test.
Are multiple rear parking aid sensor Diagnostic Trouble Codes (DTCs) recorded?
Yes GO to D2 No * For DTC B13F3:12 or DTC B13F4:12, GO to D3
* For all other PAM Diagnostic Trouble Codes (DTCs), REFER to the PAM DTC Chart . - D2 CHECK THE REAR BUMPER WIRING HARNESS
- Inspect the rear bumper wiring harness for opens, shorts, grounds or corrosion.
Is the rear bumper wiring harness OK?
Yes GO to D3 No REPAIR or INSTALL a new rear bumper wiring harness. - D3 CHECK THE SENSOR SIGNAL RETURN CIRCUIT FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect BCM C2280E .
- Ignition ON.
- Measure:
DTC B13F3:12
Positive Lead Measurement / Action Negative Lead C4420-2 Ground DTC B13F4:12
Positive Lead Measurement / Action Negative Lead C4421-2 Ground
Is any voltage present?
Yes REPAIR the circuit. No GO to D4 - D4 CHECK THE SENSOR VOLTAGE SUPPLY AND SIGNAL RETURN CIRCUITS FOR A SHORT TOGETHER
- Ignition OFF.
- Measure:
DTC B13F3:12
Positive Lead Measurement / Action Negative Lead C4420-2 C4420-1 DTC B13F4:12
Positive Lead Measurement / Action Negative Lead C4421-2 C4421-1
Is the resistance greater than 10, 000 ohms?
Yes GO to D5 No REPAIR the affected circuits. - D5 CHECK THE REAR ACTIVE PARK ASSIST SENSOR
- Connect BCM C2280E .
- Ignition ON.
- Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs) and repeat the self-test.
Is DTC B13F3:12 or DTC B13F4:12 still present?
Yes GO to D6 No INSTALL a new rear active park assist sensor for the one in question. REFER to: Rear Active Park Assist Sensors . - D6 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, BCM HARDWARE 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.