Pinpoint Test E : DTC (Diagnostic Trouble Code) B13F3:14, DTC (Diagnostic Trouble Code) B13F4:14
- E1 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 rear parking aid sensor Diagnostic Trouble Codes (DTCs) recorded?
Yes GO to E2 No - For DTC B13F3:14 or DTC B13F4:14 GO to E3
- For all other PAM Diagnostic Trouble Codes (DTCs), REFER to PAM DTC Chart .
- E2 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 E3 No REPAIR or INSTALL a new rear bumper wiring harness. - E3 CHECK THE SENSOR CIRCUITS FOR OPENS
- Ignition OFF.
- Disconnect suspect rear active park assist sensor(s) C4420 (DTC B13F3:14) or C4421 (DTC B13F4:14).
- Disconnect BCM C2280E .
- Measure:
DTC B13F3:14
Positive Lead Measurement / Action Negative Lead C2280E-26 C4420-1 C2280E-25 C4420-2 C2280E-27 C4420-3 DTC B13F4:14
Positive Lead Measurement / Action Negative Lead C2280E-26 C4421-1 C2280E-9 C4421-2 C2280E-27 C4421-3
Are the resistances less than 3 ohms?
Yes GO to E4 No REPAIR the affected circuit(s). - E4 CHECK THE SENSOR SIGNAL RETURN CIRCUIT FOR A SHORT TO GROUND
- Measure:
DTC B13F3:14
Positive Lead Measurement / Action Negative Lead C4420-2 Ground DTC B13F4:14
Positive Lead Measurement / Action Negative Lead C4421-2 Ground
Is the resistance greater than 10, 000 ohms?
Yes GO to E5 No REPAIR the circuit. - Measure:
- E5 CHECK THE REAR ACTIVE PARK ASSIST SENSOR
- Connect BCM C2280E .
- Install a known good rear active park assist sensor for the suspect sensor. REFER to: Rear Active Park Assist Sensors .
- Ignition ON.
- Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs).
- Perform the PAM self-test.
Is DTC B13F3:14 or DTC B13F4:14 still present?
Yes GO to E6 No INSTALL a new rear active park assist sensor for the one in question. REFER to: Rear Active Park Assist Sensors . - E6 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 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.