Pinpoint Test M: The Auto-Unlock Does Not Operate Correctly
Handles, Locks, Latches and Entry Systems
Pinpoint Tests
Pinpoint Test M: The Auto-Unlock Does Not Operate Correctly
Normal Operation
The Driver Door Module (DDM) energizes the unlock relay based on input from the door ajar switches and the vehicle speed signal. The DDM unlocks the doors when the following conditions are met:
- The vehicle speed has exceeded 5 km/h (3 mph) then dropped to 0 km/h (0 mph).
- The key is turned to the OFF or ACC position.
- The LH front door is opened within 10 minutes of the key being turned to the OFF or ACC position.
The auto-unlock feature is cancelled if the doors are locked with the door lock control switch or the Remote Keyless Entry (RKE) transmitter within the 10 minute active window. After the 10-minute active window expires, the auto-unlock feature does not unlock the doors if the driver door is opened.
The Instrument Cluster (IC) sends the vehicle speed signal over the Standard Corporate Protocol (SCP) network to the DDM. If the DDM does not receive the vehicle speed signal or it is invalid, the DDM sets DTC U1041.
This pinpoint test is intended to diagnose the following:
- Door ajar switch input
- Vehicle speed signal message from the IC
- DDM
PINPOINT TEST M: THE AUTO-UNLOCK DOES NOT OPERATE CORRECTLY
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M1 VERIFY THE AUTO-UNLOCK FEATURE IS ENABLED
- Verify the auto-unlock feature is enabled. Refer to Autolock and Auto-Unlock Programming Autolock and Auto-Unlock Programming.
- Is the auto-unlock feature enabled?
Yes
GO to M2.
No
ENABLE the auto-unlock feature. REFER to Autolock and Auto-Unlock Programming Autolock and Auto-Unlock Programming.
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M2 CHECK THE COURTESY LAMP OPERATION
- Open and close the doors while observing the courtesy lamp operation.
- Do the courtesy lamps operate correctly?
Yes
GO to M3.
No
REFER to Interior Lighting Testing and Inspection.
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M3 RETRIEVE THE RECORDED DDM DTCs FROM THE SELF-TEST
- Check the recorded results from the DDM self-test.
- Is continuous DTC U1041 retrieved?
Yes
REFER to Instrumentation, Message Center, and Warning Chimes Testing and Inspection to diagnose the speedometer.
No
GO to M4.
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M4 CHECK FOR CORRECT DDM OPERATION
- Disconnect all the DDM connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the DDM connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
Yes
INSTALL a new DDM. REFER to Driver Door Module (DDM) Service and Repair. TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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