Pinpoint Test H: The Remote Keyless Entry Keypad Illumination Is Inoperative
WARNING: This page is about a different car, the 2005 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
- H1 CHECK THE RKE KEYPAD SWITCH PID
- Enter the following diagnostic mode on the diagnostic tool: Vehicle Security Module KEYPAD PIDS.
- Press each RKE keypad button while viewing the vehicle security module KEYPAD PIDS.
- Do the PID values agree with the RKE keypad button positions?
- Yes : GO to H2.
- No : GO to PINPOINT TEST B to diagnose the incorrect RKE keypad PID values.
- H2 CHECK THE VEHICLE SECURITY MODULE OUTPUT FUNCTION
- Enter the following diagnostic mode on the diagnostic tool: Activate the keypad backlighting on and off active commands.
- Trigger LIGHT ON then OFF.
- Does the RKE keypad backlighting turn on and off when commanded?
- Yes : GO to H6.
- No : GO to H3.
- H3 CHECK CIRCUIT 57 (BK) FOR AN OPEN
- Key in OFF position.
- Disconnect: Remote Keyless Entry (RKE) Keypad C500.
- Measure the resistance between the RKE keypad C500-3, circuit 57 (BK), harness side and ground.
- Is the resistance less than 5 ohms?
- Yes : GO to H4.
- No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
- H4 CHECK CIRCUIT 66 (LB) FOR A SHORT TO BATTERY
- Disconnect: Vehicle Security Module C3008a.
- Key in ON position.
- Measure the voltage between the RKE keypad C500-7, circuit 66 (LB), harness side and ground.
- Is any voltage present?
- Yes : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
- No : GO to H5.
- H5 CHECK CIRCUIT 66 (LB) FOR AN OPEN
- Measure the resistance between the RKE keypad C500-7, circuit 66 (LB), harness side and the vehicle security module C3008a-10, circuit 66 (LB), harness side.
- Is the resistance less than 5 ohms?
- Yes : INSTALL a new RKE keypad. REFER to REMOTE KEYLESS ENTRY KEYPAD . CLEAR the DTCs. REPEAT the self-test.
- No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
- H6 CHECK FOR CORRECT VEHICLE SECURITY MODULE OPERATION
- Disconnect all the vehicle security module connectors.
- Check for:
- For corrosion
- For pushed-out pins
- Connect all the vehicle security 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 vehicle security module. REFER to MULTIFUNCTION ELECTRONIC MODULES . CLEAR the DTCs. REPEAT the self-test.
- No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.