Handles, Locks, Latches and Entry Systems

Pinpoint Tests

Pinpoint Test O: The Smart Unlock Does Not Operate Correctly

Normal Operation

The Smart Junction Box (SJB) commands all doors to unlock based on input from the key-in-ignition switch and door ajar signal. The 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, keyless entry keypad, or the LOCK button on an Integrated Keyhead Transmitter (IKT).

This pinpoint test is intended to diagnose the following:

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

PINPOINT TEST O: THE SMART UNLOCK DOES NOT OPERATE CORRECTLY

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O1 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 O2.

No
GO to Symptom Chart - Electrical. Symptom Related Diagnostic Procedures

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O2 CHECK THE COURTESY LAMP OPERATION

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

Yes
GO to O3.

No
REFER to Lighting and Horns.

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O3 CHECK THE KEY-IN-IGNITION CHIME

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

Yes
GO to O4.

No
REFER to Instrument Panel, Gauges and Warning Indicators.

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O4 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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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Pinpoint Test O: The Smart Unlock Does Not Operate Correctly

Use the Manual With the Right Hardware

When to See a Mechanic

Rather have a pro handle this?