Pinpoint Test AK: The Auto-Unlock Does Not Operate Correctly

Handles, Locks, Latches and Entry Systems - Intelligent Access (IA)

Pinpoint Test AK: The Auto-Unlock Does Not Operate Correctly

Normal Operation

The Remote Function Actuator (RFA) module energizes the unlock relay based upon input from the ajar switches and the vehicle speed signal. The RFA module receives the vehicle speed signal from the Instrument Panel Cluster (IPC) over the Medium Speed Controller Area Network (MS-CAN). The RFA module 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 switched to the OFF or ACC mode
- The LH front door is opened within 10 minutes of the ignition being switched to the OFF or ACC mode

This pinpoint test is intended to diagnose the following:

- Door ajar switches
- Vehicle speed signal
- RFA module



PINPOINT TEST AK: THE AUTO-UNLOCK DOES NOT OPERATE CORRECTLY

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AK1 CHECK THE AUTO-UNLOCK CONFIGURATION


- Check to see if the auto-unlock is enabled. Refer to Autolock and Auto-Unlock Programming Autolock and Auto-Unlock Programming.
- Is auto-unlock enabled?

Yes
GO to AK2.

No
ENABLE the auto-unlock. REFER to Autolock and Auto-Unlock Programming Autolock and Auto-Unlock Programming. TEST the system for normal operation.

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AK2 CHECK THE COURTESY LAMP OPERATION


- Open and close each door while observing the courtesy lamp operation.
- Do the courtesy lamps operate correctly?

Yes
GO to AK3.

No
REFER to Lighting and Horns.

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AK3 CHECK THE VEHICLE SPEED OPERATION


- Check the operation of the speedometer.
- Does the speedometer operate correctly?

Yes
GO to AK4.

No
REFER to Instrument Panel, Gauges and Warning Indicators.

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AK4 CHECK FOR CORRECT RFA MODULE OPERATION


- Disconnect all the RFA module connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the RFA module 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 RFA module. REFER to Body Control Systems. 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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