Pinpoint Test L: The Autolock Does Not Operate Correctly

Handles, Locks, Latches and Entry Systems - Integrated Keyhead Transmitter (IKT)

Pinpoint Test L: The Autolock Does Not Operate Correctly

Normal Operation

The Smart Junction Box (SJB) energizes the lock relay based upon input from the ajar switches, the Transmission Range (TR) sensor, and the vehicle speed signal. The SJB locks the doors when the following conditions are met:

- All the doors are closed
- The ignition switch is in the RUN position
- The vehicle is shifted into any gear, putting the vehicle in motion
- The vehicle attains a speed greater than 20 km/h (12 mph)

This pinpoint test is intended to diagnose the following:

- Ignition switch
- Door ajar switches
- Vehicle speed signal
- TR sensor input
- SJB



PINPOINT TEST L: THE AUTOLOCK DOES NOT OPERATE CORRECTLY

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L1 CHECK THE AUTOLOCKS CONFIGURATION


- Check to see if the autolocks are enabled. Refer to Autolock and Auto-Unlock Programming Autolock and Auto-Unlock Programming.
- Are the autolocks enabled?

Yes
GO to L2.

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

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L2 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 L3.

No
REFER to Lighting and Horns.

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L3 CHECK THE SJB PID (IGN_R_ECU)


- Ignition ON.
- Enter the following diagnostic mode on the scan tool: SJB DataLogger .
- Monitor the SJB PID (IGN_R_ECU).
- Does the ignition status PID indicate RUN?

Yes
GO to L4.

No
REFER to Steering Column to continue diagnosis of the ignition switch.

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L4 CHECK THE VEHICLE SPEED OPERATION


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

Yes
GO to L5.

No
REFER to Instrument Panel, Gauges and Warning Indicators.

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L5 CHECK THE TRANSMISSION RANGE INDICATOR


- Observe the PRNDL display while moving the shift lever through each gear position.
- Does the PRNDL display operate correctly?

Yes
GO to L6.

No
REFER to Instrument Panel, Gauges and Warning Indicators.

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L6 CHECK FOR CORRECT SJB OPERATION


- Disconnect all the SJB connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the SJB 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 SJB. 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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