Pinpoint Test C: The Doors Do Not Lock/Unlock Using The Remote Transmitter

NOTE: All remote transmitters must be present to begin diagnosis of the remote keyless entry (RKE) system.

NOTE: Aftermarket or dealer-installed systems may adversely affect the RKE system operation. These systems should be disconnected before diagnosing any RKE concerns.

C1 CHECK FOR THE CORRECT REMOTE TRANSMITTERS
- Check that the correct remote transmitters are used with the vehicle.
  - Make sure the remote transmitters are ones provided with the OEM system and not from an aftermarket system, or a dealer-installed system that may have been installed on the vehicle.
- Are all the correct remote transmitters present?
- Yes : GO to C2.
- No : The system cannot be tested without the correct remote transmitters. INFORM the customer that all the correct remote transmitters need to be present to proceed with diagnosis of the system.
C2 CHECK THE OPERATION OF THE REMOTE TRANSMITTER WITH THE KEY IN THE OFF POSITION
- Key in OFF position.
- Check the operation of the remote transmitter.
- Does the system operate correctly now?
- Yes : The system is operating as designed. INFORM the customer of the correct vehicle operation.
- No : GO to C3.
C3 CHECK THE POWER DOOR LOCK SYSTEM FOR CORRECT OPERATION
- Verify the door lock/unlock operation by actuating the driver door lock control switch.
- Do all the doors lock and unlock correctly?
- Yes : GO to C4.
- No : To diagnose the inoperative door locks, GO to PINPOINT TEST B .
C4 CHECK FOR THE COMPLETE FUNCTIONALITY OF THE REMOTE TRANSMITTER(S)
- Check all the remote transmitter buttons for correct operation.
- Does the panic button operate correctly?
- Yes : REPLACE the inoperative remote transmitter. REPROGRAM all remote transmitters. REFER to REMOTE TRANSMITTER PROGRAMMING . INFORM the customer that any remote transmitters not present will need to be reprogrammed. CLEAR the DTCs. TEST the system for normal operation.
- No : GO to C5.
C5 MAKE SURE THE REMOTE TRANSMITTER SIGNAL IS BEING RECEIVED
- Connect the diagnostic tool.
- Enter the following diagnostic mode on the diagnostic tool: Enter the generic electronic module (GEM) function tests, transmitter test or program transmitter.
  Monitor the remote transmitter identification code (TIC) through the diagnostic tool menus.
- Verify the remote transmitter signal is being received. Using a diagnostic tool press a button on the remote transmitter while observing the diagnostic tool.
- Does the TIC show up on the diagnostic tool screen when a button is pressed?
- Yes : GO to C6.
- No : GO to C7.
C6 CHECK IF THE REMOTE TRANSMITTERS ARE PROGRAMMED
- Enter the following diagnostic mode on the diagnostic tool: Enter the GEM function tests, transmitter test or program transmitter.
  Monitor the remote transmitter TIC/DATA through the diagnostic tool menus.
- Verify the remote transmitters are programmed to the vehicle.
- Does the TIC displayed under remote transmitter match any of the TICs stored in memory?
- Yes : GO to C8.
- No : PROGRAM all of the remote transmitters. REFER to REMOTE TRANSMITTER PROGRAMMING . INFORM the customer that any remote transmitters not present will need to be reprogrammed. CLEAR the DTCs. TEST the system for normal operation.
C7 CHECK THE REMOTE TRANSMITTER BATTERY
- Using a thin coin, open the remote 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 remote transmitter battery and measure the voltage.
- Is the voltage greater than 2.5 volts?
- Yes : GO to C8.
- No : INSTALL a new battery (be sure the battery is seated correctly). DO NOT reprogram the remote transmitters (faulty or dead batteries do not erase TICs from memory). CLEAR the DTCs. TEST the system for normal operation.
C8 CHECK FOR NORMAL OPERATION WITH A KNOWN GOOD REMOTE TRANSMITTER
- Enter the following diagnostic mode on the diagnostic tool: Enter the GEM function tests, transmitter test or program transmitter menu selection.
  Monitor the remote transmitter TIC/DATA through the diagnostic tool menus.
- Using the customer's second remote transmitter or a known good remote transmitter that is correct for the vehicle and verify the remote transmitter signal is being received by the GEM.
- Does the TIC show up on the diagnostic tool when a button is pressed on the remote transmitter?
- Yes : REPLACE the inoperative remote transmitter. PROGRAM all remote transmitter(s). REFER to REMOTE TRANSMITTER PROGRAMMING . INFORM the customer that any remote transmitters not present will need to be reprogrammed. CLEAR the DTCs. TEST the system for normal operation.
- No : GO to C9.
C9 CHECK THE GEM FOR CORRECT OPERATION
- Disconnect all GEM connectors.
- Check for:
  - corrosion
  - pushed-out pins
- Connect all GEM 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 GEM. refer to MULTIFUNCTION ELECTRONIC MODULE . REPROGRAM all remote transmitters. REFER to REMOTE TRANSMITTER PROGRAMMING . INFORM the customer that any remote transmitters not present will need to be reprogrammed. CLEAR the DTCs. REPEAT the self-test.
- No : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.