Pinpoint Test K: The Autolock Does Not Operate Correctly

Handles, Locks, Latches and Entry Systems

Pinpoint Tests

Pinpoint Test K: The Autolock Does Not Operate Correctly

Refer to Wiring Diagram Set 117, Remote Keyless Entry and Alarm for schematic and connector information. Diagrams By Number

Normal Operation

The Smart Junction Box (SJB) energizes the lock relay based on input from the ajar switches, the ignition switch, 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 ON 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:

- Wiring, terminals or connectors
- Programming
- Door ajar switches
- Vehicle speed signal input from the Instrument Panel Cluster (IPC)
- SJB

PINPOINT TEST K: THE AUTOLOCK DOES NOT OPERATE CORRECTLY

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K1 VERIFY THE AUTOLOCK FEATURE IS ENABLED


- Verify the autolock feature is enabled. Refer to Autolock and Auto-Unlock Programming Autolock and Auto-Unlock Programming.
- Is the autolock feature enabled?

Yes
GO to K2.

No
PROGRAM the autolock feature. REFER to Autolock and Auto-Unlock Programming Autolock and Auto-Unlock Programming.

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K2 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 K3.

No
REFER to Interior Lighting Testing and Inspection.

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K3 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 PID indicate RUN?

Yes
GO to K4.

No
REFER to Steering Column Switches Initial Inspection and Diagnostic Overview.

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K4 RETRIEVE THE RECORDED SJB DTCs FROM THE SELF-TEST


- Check for recorded SJB DTCs from the self-test.
- Is DTC U0155 recorded?

Yes
REFER to Multifunction Electronic Modules Multifunction Electronic Modules, Diagnosis and Testing, Smart Junction Box (SJB).

No
GO to K5.

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K5 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 Multifunction Electronic Modules 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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