Pinpoint Test H: The Remote Keyless Entry (RKE) Transmitter Is Inoperative
Handles, Locks, Latches and Entry Systems
Pinpoint Tests
Pinpoint Test H: 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 energizes the appropriate relays to lock or unlock the doors. The RKE transmitters and the SJB also utilize a rolling code to prevent the code from being "captured" by a code grabber. The system advances the counter in the RKE transmitter and the SJB every time an RKE transmitter button is pressed.
- DTC B2425 (Remote Keyless Entry Out of Synchronization) - a continuous DTC that sets when the SJB detects the rolling counter received from an RKE transmitter is 1,024 times greater than the rolling counter stored in the module.
This pinpoint test is intended to diagnose the following:
- RKE transmitter
- RKE transmitter battery
- RKE transmitter button pressed a substantial amount of times while outside the range of the vehicle
- RKE transmitter programming
- SJB
PINPOINT TEST H: THE RKE TRANSMITTER IS INOPERATIVE
NOTE: Aftermarket or dealer-installed systems may adversely affect the RKE system operation. These systems should be disconnected before diagnosing any RKE concerns.
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H1 CHECK FOR THE CORRECT RKE TRANSMITTERS
- NOTE: Make sure the RKE 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 transmitters are used with the vehicle. Compare the RKE transmitters with the one shown in Handles, Locks, Latches and Entry Systems Description and Operation in the Description and Operation.
- Are the correct RKE transmitters present?
Yes
GO to H2.
No
The system cannot be tested without the correct RKE transmitters. INFORM the customer that the correct RKE transmitters must be present to proceed with diagnosis of the system.
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H2 CHECK IF THE RKE TRANSMITTER IS OUT OF SYNCHRONIZATION WITH THE SJB
- Check the recorded results from the SJB self-test.
- Is continuous DTC B2425 present?
Yes
GO to H3.
No
GO to H7.
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H3 RESYNCHRONIZE THE INOPERATIVE RKE TRANSMITTER
- Ignition OFF.
- Press any button on the inoperative RKE transmitter 4 times consecutively within 30 seconds.
- Does the RKE transmitter operate correctly now?
Yes
The transmitter is now synchronized. CLEAR the DTCs. REPEAT the self-test.
No
GO to H4.
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H4 CHECK FOR A SECOND RKE TRANSMITTER
- Check for another RKE transmitter that operates with the vehicle.
- Is there another RKE transmitter that operates with the vehicle?
Yes
GO to H5.
No
GO to H6.
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H5 RESYNCHRONIZE THE INOPERATIVE RKE TRANSMITTER USING THE SECOND RKE TRANSMITTER
- Ignition OFF.
- Press any button on the operational RKE transmitter.
- Within 30 seconds, press a button on the inoperative RKE transmitter.
- Check the inoperative RKE transmitter for correct operation.
- Does the inoperative RKE transmitter operate now?
Yes
The transmitter is now synchronized. CLEAR the DTCs. REPEAT the self-test.
No
GO to H6.
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H6 PROGRAM THE INOPERATIVE RKE TRANSMITTER OR ALL THE RKE TRANSMITTERS
- Program the inoperative RKE transmitter individually using a scan tool or program all the RKE transmitters using the manual key cycle method. Refer to Remote Keyless Entry (RKE) Transmitter Programming Transmitter.
- Does the inoperative RKE transmitter(s) operate now?
Yes
The transmitter(s) is now synchronized. INFORM the customer that any RKE transmitters not present need to be programmed. CLEAR the DTCs. REPEAT the self-test.
No
GO to H7.
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H7 MAKE SURE THE RKE TRANSMITTER SIGNAL IS BEING RECEIVED
- Enter the following diagnostic mode on the scan tool: SJB DataLogger .
- Press a button on the RKE transmitter while observing the SJB PIDs (TIC_LAST and TNSMT_CMD).
- Does the Transmitter Identification Code (TIC) and RKE command show up on the scan tool screen when a button is pressed?
Yes
GO to H8.
No
GO to H9.
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H8 CHECK IF THE RKE TRANSMITTERS ARE PROGRAMMED
- Enter the following diagnostic mode on the scan tool: SJB DataLogger .
- Press a button on the RKE transmitter and compare the SJB PID (TIC_LAST) with the PIDs (TIC_1, 2, 3, 4, 7, 8, 9, or 10).
- Does the TIC displayed match any of the TICs stored in memory?
Yes
GO to H11.
No
PROGRAM the inoperative RKE transmitter individually using a scan tool or PROGRAM all RKE transmitters using the manual key cycle method. REFER to Remote Keyless Entry (RKE) Transmitter Programming Transmitter. INFORM the customer that any RKE transmitters not present need to be programmed. CLEAR the DTCs. REPEAT the self-test.
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H9 CHECK THE RKE TRANSMITTER BATTERY
- Using a thin coin, open the RKE 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 transmitter battery and measure the voltage.
- Is the voltage greater than 2.5 volts?
Yes
GO to H10.
No
INSTALL a new battery (make sure the battery is seated correctly). DO NOT reprogram the RKE transmitters (weak or dead batteries do not erase TICs from memory). TEST the system for normal operation.
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H10 CHECK FOR NORMAL OPERATION WITH A KNOWN GOOD RKE TRANSMITTER
- Enter the following diagnostic mode on the scan tool: SJB DataLogger .
- Use the customer's second RKE transmitter (or a known good RKE transmitter that is programmed and correct for the vehicle), and press a button on the RKE transmitter while observing the SJB PID (TIC_LAST).
- Does the TIC show up on the scan tool when a button is pressed?
Yes
REPLACE the inoperative RKE transmitter. PROGRAM the new RKE transmitter individually using a scan tool or PROGRAM all the RKE transmitters using the manual key cycle method. REFER to Remote Keyless Entry (RKE) Transmitter Programming Transmitter. TEST the system for normal operation.
No
GO to H11.
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H11 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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