Pinpoint Test I: All Door Locks Are Inoperative
- Refer to the appropriate Wiring Diagrams
for schematic and connector information.
Normal Operation and Fault Conditions
Possible Sources
- Door lock/unlock input concern
- NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
- I1 CHECK FOR BCM (BODY CONTROL MODULE), DDM (DRIVER DOOR MODULE) AND PDM (PASSENGER DOOR MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
- Ignition ON.
- Using a diagnostic scan tool, carry out the BCM self-test.
- Using a diagnostic scan tool, carry out the DDM self-test.
- Using a diagnostic scan tool, carry out the PDM self-test.
Are any Diagnostic Trouble Codes (DTCs) present?
Yes REFER to the BCM DTC Chart, the DDM DTC Chart or the PDM DTC Chart in DTC Charts . No GO to I2 - I2 VERIFY THE OPERATION OF BOTH DOOR LOCK CONTROL SWITCHES
- Press the lock and unlock buttons on both door lock control switches while observing the door lock operation.
Does any door lock operate?
Yes GO to I3 No GO to I4 - I3 CHECK IF THE LOCKS OPERATE IN ONLY ONE DIRECTION
- Press the lock and unlock buttons from the driver door lock control switch and then the passenger door lock control switch while observing the door locks.
Are all the door locks inoperative from both switch positions (lock and unlock) of either door lock control switch?
Yes GO to Pinpoint Test L No GO to Pinpoint Test K - I4 CHECK THE BCM (BODY CONTROL MODULE) DOOR LOCK GROUND CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect BCM C2280F.
- Measure
Positive Lead Measurement / Action Negative Lead C2280F-24 Ground
Is the resistance less than 3 ohms?
Yes GO to I5 No REPAIR the circuit. - I5 CHECK THE ALL DOOR LOCK CIRCUIT FOR AN OPEN
- Disconnect Left Front Door Latch C525.
Is the resistance less than 3 ohms?
Yes GO to I6 No REPAIR the circuit. - I6 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
- Disconnect and inspect all the BCM connectors.
- Repair:
- corrosion (install new connectors 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 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 service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM. REFER to: BODY CONTROL MODULE (BCM) . No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.