Diagnostic Routine J

Diagnostic Routine J

Diagnostic Overview

The Remote Keyless Entry (RKE) Transmitter Is Inoperative

Normal Operations and Fault Conditions

Remote locking and unlocking of the doors, releasing the liftgate or luggage compartment lid, and activation of the panic alarm is accomplished by the BCM (Body Control Module) receiving a command message from the RKE (Remote Keyless Entry) transmitter. The BCM (Body Control Module) processes the command and provides the appropriate output.

The RKE (Remote Keyless Entry) transmitters and the BCM (Body Control Module) also utilize a rolling code to prevent the code from being captured by a code grabber. The system advances the counter in the RKE (Remote Keyless Entry) transmitter and the BCM (Body Control Module) every time a RKE (Remote Keyless Entry) transmitter button is pressed.

If the vehicle has been inactive for 28 days or longer, the RKE (Remote Keyless Entry) feature is switched off in the BCM (Body Control Module) to conserve battery power. The RKE (Remote Keyless Entry) feature is enabled again when the ignition is switched to ON.

DTC Fault Trigger Conditions






Visual Inspection and Diagnostic Pre-checks

- Inspect the RKE (Remote Keyless Entry) transmitter.

Pinpoint Test

1. CHECK FOR THE CORRECT RKE (Remote Keyless Entry) TRANSMITTERS

1. Check that the correct RKE (Remote Keyless Entry) transmitters are used with the vehicle. REFER to Integrated Keyhead Transmitter (IKT).

Are the correct RKE (Remote Keyless Entry) transmitters present?






2. CHECK THE RECORDED BCM (Body Control Module) DTCs (Diagnostic Trouble Codes) FROM THE SELF-TEST

1. Using a scan tool, perform the BCM (Body Control Module) self-test.

Is DTC (Diagnostic Trouble Code) B1D21:62 present?






3. RESYNCHRONIZE THE INOPERATIVE RKE (Remote Keyless Entry) TRANSMITTERS

1. Place the inoperative IKT (Integrated Keyhead Transmitter) in the ignition.

2. Ignition OFF.

3. Ignition ON.

4. Ignition OFF.

5. Press any button on the RKE (Remote Keyless Entry) transmitters.

Does the RKE (Remote Keyless Entry) transmitter operate?






4. CHECK THE FUNCTIONALITY OF THE RKE (Remote Keyless Entry) TRANSMITTER

1. Press each button on the RKE (Remote Keyless Entry) transmitter.

Does any button operate correctly?






5. CHECK IF THE RKE (Remote Keyless Entry) TRANSMITTER IS PROGRAMMED

1. Attempt to start the engine using the IKT (Integrated Keyhead Transmitter).

Does the engine start?






6. CHECK THE RKE (Remote Keyless Entry) TRANSMITTER BATTERY

1. NOTE: Do not clean off any grease from the battery terminals on the back surface of the circuit board.
Using a thin coin, open the IKT (Integrated Keyhead Transmitter).

2. Verify the correct battery is used (CR2032).

3. Remove the IKT (Integrated Keyhead Transmitter) battery and measure the voltage.

Is the voltage greater than 2.5 volts?






7. CHECK FOR NORMAL OPERATION WITH A KNOWN GOOD RKE (Remote Keyless Entry) TRANSMITTER

1. Press a button on the customer's second RKE (Remote Keyless Entry) transmitter, or a known good RKE (Remote Keyless Entry) transmitter that is correct for the vehicle.

Does the known good RKE (Remote Keyless Entry) transmitter operate?






8. CHECK FOR CORRECT BCM (Body Control Module) OPERATION

1. Ignition OFF.

2. Disconnect and inspect all BCM (Body Control Module) connectors.

3. Repair:

- corrosion (install new connectors or terminals-clean module pins)
- damaged or bent pins- install new terminals pins
- pushed-out pins- install new pins as necessary

4. Reconnect all the BCM (Body Control Module) connectors and make sure they seat and latch correctly.

5. Operate the system and determine if the concern is still present.

Is the concern still present?