Pinpoint Test H: The Remote Keyless Entry (RKE) Transmitter Is Inoperative
Handles, Locks, Latches and Entry Systems
Pinpoint Test H: The Remote Keyless Entry (RKE) Transmitter Is Inoperative
Normal Operation
The Remote Keyless Entry (RKE) feature is controlled by the Tire Pressure Monitor (TPM) module and the Body Control Module (BCM). When a button is pressed on an Integrated Keyhead Transmitter (IKT) the Transmitter Identification Code (TIC) and RKE (Remote Keyless Entry) command is received by the internal TPM (Tire Pressure Monitor) antenna. If the TPM (Tire Pressure Monitor) module determines that it is a valid and programmed TIC (Transmitter Identification Code), it sends the RKE (Remote Keyless Entry) command and TIC (Transmitter Identification Code) to the BCM (Body Control Module) over the Medium Speed Controller Area Network (MS-CAN). When the BCM (Body Control Module) receives the RKE (Remote Keyless Entry) command, it carries out the command by controlling the door locks or activating the horn and turn signals for the panic alarm.
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 an RKE (Remote Keyless Entry) transmitter button is pressed.
- DTC B10AB: 00 (Remote Keyless Entry Synchronization: No Sub Type Information)- sets when the BCM (Body Control Module) detects the rolling counter received from an RKE (Remote Keyless Entry) transmitter is out of synchronization with the rolling counter stored in the module.
- DTC B1218: 00 (Transmitter Identification Code: No Sub Type Information)- sets when the BCM (Body Control Module) detects an invalid TIC (Transmitter Identification Code) from an IKT (Integrated Keyhead Transmitter).
This pinpoint test is intended to diagnose the following:
- IKT (Integrated Keyhead Transmitter)
- IKT (Integrated Keyhead Transmitter) battery
- IKT (Integrated Keyhead Transmitter) button pressed a substantial amount of times while outside the range of the vehicle
- IKT (Integrated Keyhead Transmitter) programming
- TPM (Tire Pressure Monitor) module
- BCM (Body Control Module)
PINPOINT TEST H : THE RKE (Remote Keyless Entry) TRANSMITTER IS INOPERATIVE
NOTE:
Aftermarket or dealer-installed systems may adversely affect the RKE (Remote Keyless Entry) system operation. These systems should be disconnected before diagnosing any RKE (Remote Keyless Entry) concerns.
H1 CHECK FOR THE CORRECT IKTs (Integrated Keyhead Transmitters)
- NOTE: Make sure the IKTs (Integrated Keyhead 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 IKTs (Integrated Keyhead Transmitters) are used with the vehicle. Compare the IKTs (Integrated Keyhead Transmitters) with the one shown in Handles, Locks, Latches and Entry Systems Description and Operation in the Description and Operation.
Are the correct RKE (Remote Keyless Entry) transmitters present?
Yes
GO to H2.
No
The system cannot be tested without the correct IKTs (Integrated Keyhead Transmitters). INFORM the customer that the correct IKTs (Integrated Keyhead Transmitters) must be present to proceed with diagnosis of the system.
H2 CHECK THE RKE (Remote Keyless Entry) OPERATION WHEN THE TPM (Tire Pressure Monitor) MODULE IS IN AN AWAKE MODE
- Open and close the driver door.
- Press any button on the IKT (Integrated Keyhead Transmitter).
Does the RKE (Remote Keyless Entry) feature operate?
Yes
GO to H3.
No
GO to H4.
H3 CHECK THE RKE (Remote Keyless Entry) OPERATION WHEN THE TPM (Tire Pressure Monitor) MODULE IS IN A SLEEP MODE
- Ignition OFF.
- Let the vehicle sit for 10 minutes to allow the vehicle modules to go into a sleep mode.
- Press any button on the IKT (Integrated Keyhead Transmitter).
Does the RKE (Remote Keyless Entry) feature operate?
Yes
The system is operating correctly at this time.
No
GO to H11.
H4 PERFORM THE NETWORK TEST ON THE TPM MODULE
- Connect the scan tool.
- Ignition ON.
- Perform the network test on the TPM module.
Does the TPM module pass the network test?
Yes
GO to H5.
No
REFER to Information Bus to diagnose the TPM module does not respond to the scan tool.
H5 CHECK FOR TPMS (Tire Pressure Monitoring System) DTCs
- Perform the BCM (Body Control Module) self-test.
Are any TPMS (Tire Pressure Monitoring System) DTCs recorded?
Yes
DIAGNOSE all TPMS (Tire Pressure Monitoring System) DTCs first. REFER to Wheels and Tires.
No
GO to H6.
H6 CHECK THE RECORDED BCM (Body Control Module) DTCs FROM THE SELF-TEST
- Check the recorded results from the BCM (Body Control Module) self-test.
Are any DTCs recorded?
Yes
For DTC B10AB: 00 GO to H7.
For DTC B1218: 00 GO to H8.
For all other DTCs, REFER to DTC Charts. Doors, Hood and Trunk
No
GO to H8.
H7 RESYNCHRONIZE THE INOPERATIVE IKT (Integrated Keyhead Transmitter)
- Ignition OFF.
- Ignition ON.
- Ignition OFF.
- Press any button on the IKT (Integrated Keyhead Transmitter).
Does the RKE (Remote Keyless Entry) feature operate?
Yes
The system is OK. CLEAR the DTCs. REPEAT the self-test.
No
GO to H8.
H8 MAKE SURE THE RKE (Remote Keyless Entry) TRANSMITTER SIGNAL IS BEING RECEIVED
- Enter the following diagnostic mode on the scan tool: BCM (Body Control Module) DataLogger.
- Press a button on the IKT (Integrated Keyhead Transmitter) while observing the BCM (Body Control Module) PIDs (TIC_LAST_BC and LST_RKE_xMTR).
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 H9.
No
GO to H10.
H9 CHECK IF THE RKE (Remote Keyless Entry) TRANSMITTERS ARE PROGRAMMED
- Enter the following diagnostic mode on the scan tool: BCM (Body Control Module) DataLogger.
- Press a button on the IKT (Integrated Keyhead Transmitter) and compare the BCM (Body Control Module) PID (TIC_LAST_BC) with the PIDs (TIC_01_BCM, 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 H12.
No
PROGRAM the inoperative IKT (Integrated Keyhead Transmitter) individually or PROGRAM all the IKTs (Integrated Keyhead Transmitters). REFER to Antitheft and Alarm Systems for the programming procedures. If all the IKTs (Integrated Keyhead Transmitters) are to be programmed, INFORM the customer that any IKTs (Integrated Keyhead Transmitters) not present need to be programmed. CLEAR the DTCs. REPEAT the self-test.
H10 CHECK THE IKT (Integrated Keyhead Transmitter) BATTERY
- Using a thin coin, open the IKT (Integrated Keyhead 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 IKT (Integrated Keyhead Transmitter) battery and measure the voltage.
Is the voltage greater than 2.5 volts?
Yes
GO to H11.
No
INSTALL a new battery (make sure the battery is seated correctly). DO NOT reprogram the IKT (Integrated Keyhead Transmitter) (weak or dead batteries do not erase TICs (Transmitter Identification Codes) from memory). TEST the system for normal operation.
H11 CHECK FOR NORMAL OPERATION WITH A KNOWN GOOD IKT (Integrated Keyhead Transmitter)
- Enter the following diagnostic mode on the scan tool: BCM (Body Control Module) DataLogger.
- Use the customer's second IKT (Integrated Keyhead Transmitter), or a known good RKE (Remote Keyless Entry) transmitter that is correct for the vehicle, press a button on the IKT (Integrated Keyhead Transmitter) while observing the BCM (Body Control Module) PID (TIC_LAST_BC).
Does the TIC (Transmitter Identification Code) show up on the scan tool when a button is pressed?
Yes
REPLACE the inoperative IKT (Integrated Keyhead Transmitter) and PROGRAM the new IKT (Integrated Keyhead Transmitter) individually or PROGRAM all the IKTs (Integrated Keyhead Transmitters). If all the IKTs (Integrated Keyhead Transmitters) are to be programmed, INFORM the customer that any IKTs (Integrated Keyhead Transmitters) not present need to be programmed. CLEAR the DTCs. REPEAT the self-test.
No
GO to H12.
H12 CHECK FOR CORRECT BCM (Body Control Module) OPERATION
- Disconnect all the BCM (Body Control Module) connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the BCM (Body Control Module) 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 (Body Control Module). 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.