B1B44:14, B1B46:14, B1B48:14, B1B50:14
- D1 RETRIEVE THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PARKING AID MODULE (PAM) SELF-TEST
- Using a 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 rear parking aid sensor Diagnostic Trouble Codes (DTCs) recorded?
- Yes : GO to D2
- No
: For DTC
B1B44:14, B1B46:14, B1B48:14 or B1B50:14, GO to D3
For all other Diagnostic Trouble Codes (DTCs), REFER to the Parking Aid Module (PAM) DTC Chart .
- D2 CHECK THE REAR BUMPER WIRING HARNESS
- Ignition OFF.
- 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 REAR PARKING AID SENSOR CIRCUITRY FOR OPENS
- Disconnect: suspect parking aid sensor.
- Disconnect: BCM C2280E
- For DTC
B1B44:14, measure:
Positive Lead Measurement/Action Negative Lead C2280E-26 C4011-1 C2280E-7 C4011-2 C2280E-27 C4011-3 - For DTC
B1B46:14, measure:
Positive Lead Measurement/Action Negative Lead C2280E-26 C4012-1 C2280E-9 C4012-2 C2280E-27 C4012-3 - For DTC
B1B48:14, measure:
Positive Lead Measurement/Action Negative Lead C2280E-26 C4009-1 C2280E-23 C4009-2 C2280E-27 C4009-3 - For DTC
B1B50:14, measure:
Positive Lead Measurement/Action Negative Lead C2280E-26 C4010-1 C2280E-24 C4010-2 C2280E-27 C4010-3
Are the resistances of the suspect sensor circuits less than 3 ohms?
- Yes : GO to D4
- No : REPAIR the circuit in question.
- D4 CHECK THE REAR PARKING AID SENSOR CIRCUITRY FOR SHORTS TO GROUND
- For DTC
B1B44:14, measure:
Positive Lead Measurement/Action Negative Lead C4011-2 Ground - For DTC
B1B46:14, measure:
Positive Lead Measurement/Action Negative Lead C4012-2 Ground - For DTC
B1B48:14, measure:
Positive Lead Measurement/Action Negative Lead C4009-2 Ground - For DTC
B1B50:14, measure:
Positive Lead Measurement/Action Negative Lead C4010-2 Ground
Is the resistance greater than 10, 000 ohms for the sensor circuit in question?
- Yes
: If all of the parking aid sensors recorded Diagnostic Trouble Codes (DTCs), GO to D5
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: REAR PARKING AID SENSOR .
- No : REPAIR the circuit in question.
- For DTC
B1B44:14, measure:
- D5 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.