Pinpoint Test A: B129C:12, B129D:12
WARNING: This page is about a different car, the 2014 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
- A1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PARKING AID MODULE (PAM) SELF-TEST
- Using a diagnostic scan tool, perform the Parking Aid Module (PAM) self-test.
- Check the Parking Aid Module (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 B129D:12, GO to A3
For all other Parking Aid Module (PAM) Diagnostic Trouble Codes (DTCs),
REFER to: PARKING AID .
- 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.
- For DTC B129C:12, Disconnect: LH Front Active Park Assist Sensor.
- For DTC B129D:12, Disconnect: RH Front Active Park Assist Sensor.
- Disconnect BCM C2280C .
- Ignition ON.
- For DTC B129C:12, measure:
Positive Lead Measurement/Action Negative Lead C1607-2 Ground - For DTC B129D:12, measure:
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.
- For DTC B129C:12, measure:
Positive Lead Measurement/Action Negative Lead C1607-2 C1607-1 - For DTC B129D:12, measure:
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 ACTIVE PARK ASSIST SENSOR
- Connect BCM C2280C .
- Install a known good active park assist sensor for the suspect sensor.
REFER to: FRONT ACTIVE PARK ASSIST SENSORS .
- Ignition ON.
- Using a diagnostic scan tool, clear the Parking Aid Module (PAM) Diagnostic Trouble Codes (DTCs).
- Perform the Parking Aid Module (PAM) self-test.
Is DTC B129C:12 or B129D:12 still present?
- Yes : GO to A6
- No
: INSTALL a new 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.
- 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 Technical Service Bulletins (TSBs). If a Technical Service Bulletin (TSB) exists for this concern, DISCONTINUE this test and FOLLOW Technical Service Bulletin (TSB) instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM.
REFER to: BODY CONTROL MODULE (BCM) .
- No : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.