Pinpoint Test L: The Smart Unlock Does Not Operate Correctly

Handles, Locks, Latches and Entry Systems

Pinpoint Tests

Pinpoint Test L: The Smart Unlock Does Not Operate Correctly

Normal Operation

The Body Control Module (BCM) commands all doors to unlock based on input from the key-in-ignition switch and the door ajar signal. This feature helps prevent the keys from being locked in the vehicle by unlocking the doors if the key is in the ignition and either front door is ajar.

The vehicle can still be locked with the key in the ignition, by using the manual lock rod, a key in the door lock cylinder, the keyless entry keypad, or the LOCK button on a Integrated Keyhead Transmitter (IKT).

This pinpoint test is intended to diagnose the following:

- Key-in-ignition switch
- Door ajar switch input
- BCM

PINPOINT TEST L: THE SMART UNLOCK DOES NOT OPERATE CORRECTLY

-------------------------------------------------
L1 CHECK THE DOOR LOCK OPERATION

- Check the operation of the door locks from the driver door lock control switch.
- Do all the doors lock and unlock?

Yes
GO to L2.

No
CHECK the symptom(s) and GO to Symptom Chart - Electrical. Symptom Related Diagnostic Procedures

-------------------------------------------------
L2 CHECK THE COURTESY LAMP OPERATION

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

Yes
GO to L3.

No
REFER to Interior Lighting Testing and Inspection.

-------------------------------------------------
L3 CHECK THE KEY-IN-IGNITION CHIME

- Insert the key in the ignition lock cylinder.
- Open the driver door.
- Does the key-in-ignition chime operate correctly?

Yes
GO to L4.

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

-------------------------------------------------
L4 CHECK FOR CORRECT BCM OPERATION

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

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