Pinpoint Test M: The Auto-Unlock Is Inoperative

Handles, Locks, Latches and Entry Systems

Pinpoint Test M: The Auto-Unlock Is Inoperative

Normal Operation

The Body Control Module (BCM) energizes the unlock relay based upon input from the door ajar switches and the vehicle speed signal. The BCM unlocks the doors when the following conditions are met:

- The vehicle speed has exceeded 20 km/h (12 mph), then dropped to 0 km/h (0 mph)
- The ignition is in the OFF mode
- The LH front door is opened within 10 minutes of the ignition being turned to the OFF mode

This pinpoint test is intended to diagnose the following:

- Programming
- Door ajar switches
- Ignition switch
- Vehicle speed input

PINPOINT TEST M: THE AUTO-UNLOCK IS INOPERATIVE

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M1 CHECK THE COURTESY LAMP OPERATION

- Open and close the doors while checking the courtesy lamp operation.
- Do the courtesy lamps operate correctly?

Yes
GO to M2.

No
REFER to Interior Lighting Testing and Inspection to DIAGNOSE the door ajar inputs.

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M2 CHECK THE BCM IGNITION STATUS PID

- Enter the following diagnostic mode on the scan tool: BCM DataLogger.
- Monitor the BCM PID (IGN_SW_RUN).
- Does the ignition status PID indicate RUN?

Yes
GO to M3.

No
REFER to Steering Column Switches Testing and Inspection to continue diagnosis of the ignition outputs.

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M3 CHECK THE OPERATION OF THE SPEEDOMETER

- Observe the speedometer while driving the vehicle.
- Does the speedometer operate correctly?

Yes
ENABLE the autolock feature. REFER to Autolock and Auto-Unlock Programming Autolock and Auto-Unlock Programming. TEST the system for normal operation.

No
REFER to Instrumentation, Message Center, and Warning Chimes Testing and Inspection to DIAGNOSE the speedometer.

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