Pinpoint Test F: The Remote Keyless Entry (RKE) Transmitter Is Inoperative

Handles, Locks, Latches and Entry Systems

Pinpoint Test F: The Remote Keyless Entry (RKE) Transmitter Is Inoperative

Normal Operation

Remote locking and unlocking of the doors is accomplished by the Smart Junction Box (SJB) receiving a command message from the Remote Keyless Entry (RKE) transmitter. The SJB (Smart Junction Box) energizes the appropriate relays to lock or unlock the doors. The RKE (Remote Keyless Entry) transmitters and the SJB (Smart Junction Box) 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 SJB (Smart Junction Box) every time an RKE (Remote Keyless Entry) transmitter button is pressed.

- DTC B2425 (Remote Keyless Entry Out of Synchronization)- a continuous DTC that sets when the SJB (Smart Junction Box) detects the rolling counter received from an RKE (Remote Keyless Entry) transmitter is 1,024 times greater than the rolling counter stored in the module.

This pinpoint test is intended to diagnose the following:

- RKE (Remote Keyless Entry) transmitter

- RKE (Remote Keyless Entry) transmitter battery

- RKE (Remote Keyless Entry) transmitter button pressed a substantial amount of times while outside the range of the vehicle

- RKE (Remote Keyless Entry) transmitter programming

- SJB (Smart Junction Box)

PINPOINT TEST F : THE RKE (Remote Keyless Entry) TRANSMITTER IS INOPERATIVE

NOTE: Aftermarket or dealer-installed systems can adversely affect the RKE (Remote Keyless Entry) system operation. These systems should be disconnected before diagnosing any RKE (Remote Keyless Entry) concerns.

F1 CHECK FOR THE CORRECT RKE (Remote Keyless Entry) TRANSMITTERS

- NOTE: Make sure the RKE (Remote Keyless Entry) transmitters are those provided with the OEM system and not from an aftermarket system, or a dealer-installed system that may have been installed on the vehicle.

Check that the correct RKE (Remote Keyless Entry) transmitters are used with the vehicle. Compare the RKE (Remote Keyless Entry) transmitters with the one shown in Handles, Locks, Latches and Entry Systems Description and Operation in the Description and Operation portion.

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

Yes
GO to F2.

No
The system cannot be tested without the correct RKE (Remote Keyless Entry) transmitters. INFORM the customer that the correct RKE (Remote Keyless Entry) transmitters must be present to proceed with diagnosis of the system.

F2 CHECK IF THE RKE (Remote Keyless Entry) TRANSMITTER IS OUT OF SYNCHRONIZATION WITH THE SJB (Smart Junction Box)

- Check the recorded results from the SJB (Smart Junction Box) self-test.

Is continuous DTC B2425 present?

Yes
GO to F3.

No
GO to F7.

F3 RESYNCHRONIZE THE INOPERATIVE RKE (Remote Keyless Entry) TRANSMITTER

- Ignition OFF.

- Press any button on the inoperative RKE (Remote Keyless Entry) transmitter 4 times consecutively within 30 seconds.

Does the RKE (Remote Keyless Entry) transmitter operate correctly now?

Yes
The transmitter is now synchronized. CLEAR the DTCs. REPEAT the self-test.

No
GO to F4.

F4 CHECK FOR A SECOND RKE (Remote Keyless Entry) TRANSMITTER

- Check for another RKE (Remote Keyless Entry) transmitter that operates with the vehicle.

Is there another RKE (Remote Keyless Entry) transmitter that operates with the vehicle?

Yes
GO to F5.

No
GO to F6.

F5 RESYNCHRONIZE THE INOPERATIVE RKE (Remote Keyless Entry) TRANSMITTER USING THE SECOND RKE (Remote Keyless Entry) TRANSMITTER

- Ignition OFF.

- Press any button on the operational RKE (Remote Keyless Entry) transmitter.

- Within 30 seconds, press a button on the inoperative RKE (Remote Keyless Entry) transmitter.

- Check the inoperative RKE (Remote Keyless Entry) transmitter for correct operation.

Does the inoperative RKE (Remote Keyless Entry) transmitter operate now?

Yes
The transmitter is now synchronized. CLEAR the DTCs. REPEAT the self-test.

No
GO to F6.

F6 PROGRAM THE INOPERATIVE RKE (Remote Keyless Entry) TRANSMITTER OR ALL THE RKE (Remote Keyless Entry) TRANSMITTERS

- Program the inoperative RKE (Remote Keyless Entry) transmitter individually using a scan tool or program all RKE (Remote Keyless Entry) transmitters using the manual key cycle method. Refer to Remote Keyless Entry (RKE) Transmitter Programming Remote Keyless Entry (RKE) Transmitter Programming.

Does the inoperative RKE (Remote Keyless Entry) transmitter(s) operate now?

Yes
The transmitter(s) is now synchronized. INFORM the customer that any RKE (Remote Keyless Entry) transmitters not present need to be programmed. CLEAR the DTCs. REPEAT the self-test.

No
GO to F7.

F7 MAKE SURE THE RKE (Remote Keyless Entry) TRANSMITTER SIGNAL IS BEING RECEIVED

- Enter the following diagnostic mode on the scan tool: SJB (Smart Junction Box) DataLogger.

- Press lock and unlock on the IKT (Integrated Keyhead Transmitter) while observing the SJB (Smart Junction Box) PIDs (TIC_LAST and TNSMT_CMD).

Does the Transmitter Identification Code (TIC) and RKE (Remote Keyless Entry) command show up on the scan tool screen when a button is pressed?

Yes
GO to F8.

No
GO to F9.

F8 CHECK IF THE RKE (Remote Keyless Entry) TRANSMITTERS ARE PROGRAMMED

- Enter the following diagnostic mode on the scan tool: SJB (Smart Junction Box) DataLogger.

- Press a button on the RKE (Remote Keyless Entry) transmitter and compare the SJB (Smart Junction Box) PID (TIC_LAST) with the PIDs (TIC_1, 2, 3, 4, 7, 8, 9, or 10).

Does the TIC (Transmitter Identification Code) displayed match any of the TICs (Transmitter Identification Codes) stored in memory?

Yes
GO to F11.

No
PROGRAM the inoperative RKE (Remote Keyless Entry) transmitter individually using a scan tool or PROGRAM all RKE (Remote Keyless Entry) transmitters using the manual key cycle method. REFER to Remote Keyless Entry (RKE) Transmitter Programming Remote Keyless Entry (RKE) Transmitter Programming. INFORM the customer that any RKE (Remote Keyless Entry) transmitters not present need to be programmed. CLEAR the DTCs. REPEAT the self-test.

F9 CHECK THE RKE (Remote Keyless Entry) TRANSMITTER BATTERY

- Using a thin coin, open the RKE (Remote Keyless Entry) transmitter.

- Do not clean off any grease from the battery terminals on the back surface of the circuit board.

- Verify the correct battery is used (CR2032).

- Remove the RKE (Remote Keyless Entry) transmitter battery and measure the voltage.

Is the voltage greater than 2.5 volts?

Yes
GO to F10.

No
INSTALL a new battery (make sure the battery is seated correctly). DO NOT reprogram the RKE (Remote Keyless Entry) transmitters (weak or dead batteries do not erase TICs (Transmitter Identification Codes) from memory). TEST the system for normal operation.

F10 CHECK FOR NORMAL OPERATION WITH A KNOWN GOOD RKE (Remote Keyless Entry) TRANSMITTER

- Enter the following diagnostic mode on the scan tool: SJB (Smart Junction Box) DataLogger.

- Use the customer's second RKE (Remote Keyless Entry) transmitter (or a known good RKE (Remote Keyless Entry) transmitter that is programmed and correct for the vehicle), and press a button on the RKE (Remote Keyless Entry) transmitter while observing the SJB (Smart Junction Box) PID (TIC_LAST).

Does the TIC (Transmitter Identification Code) show up on the scan tool when a button is pressed?

Yes
REPLACE the inoperative RKE (Remote Keyless Entry) transmitter. PROGRAM the new RKE (Remote Keyless Entry) transmitter individually using a scan tool or PROGRAM all RKE (Remote Keyless Entry) transmitters using the manual key cycle method. REFER to Remote Keyless Entry (RKE) Transmitter Programming Remote Keyless Entry (RKE) Transmitter Programming. TEST the system for normal operation.

No
GO to F11.

F11 CHECK FOR CORRECT SJB (Smart Junction Box) OPERATION

- Disconnect all the SJB (Smart Junction Box) connectors.

- Check for:
- corrosion

- damaged pins

- pushed-out pins


- Connect all the SJB (Smart Junction Box) 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 (Smart Junction Box). 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.