Pinpoint Test M: The Autolock Does Not Operate Correctly

Locks, Latches and Entry Systems







Pinpoint Tests

Pinpoint Test M: 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 position, the Transmission Range (TR) sensor and the Vehicle Speed Sensor (VSS). The TR and VSS signals are sent to the SJB over the Medium Speed Controller Area Network (MS-CAN) from the Instrument Cluster (IC). 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:

- Wiring, terminals or connectors
- Programming
- Door ajar switches
- SJB



PINPOINT TEST M: THE AUTOLOCK DOES NOT OPERATE CORRECTLY

-------------------------------------------------
M1 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 M2.

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

-------------------------------------------------
M2 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 M3.

No
Refer to Courtesy Lamp. Testing and Inspection

-------------------------------------------------
M3 CHECK THE SJB PID (IGN_R_ECU)


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

Yes
GO to M4.

No
Refer to Steering Column. Testing and Inspection

-------------------------------------------------
M4 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 Information Bus.

No
GO to M5.

-------------------------------------------------
M5 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. 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.

-------------------------------------------------