Pinpoint Test F: The Doors Do Not Lock/Unlock Using The Remote Keyless Entry

WARNING: This page is about a different car, the 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Use the flex probe kit for all test connections to prevent damage to the wiring terminals. Do not use standard multimeter probes.

F1 CHECK THE VEHICLE SECURITY MODULE KEYPAD SWITCH PIDS
- Enter the following diagnostic mode on the scan tool: Vehicle Security Module KEYPAD PIDS.
- Press each remote keyless entry (RKE) keypad button while viewing vehicle security module KEYPAD PIDS.
- Do the PID values agree with the RKE keypad button positions?
Yes : GO to F5.

No : GO to F2.

F2 CHECK CIRCUITS 121 (YE/BK), 122 (YE), AND 123 (RD) FOR RESISTANCE TO GROUND

Key in OFF position.
Disconnect: Vehicle Security Module C2113c.

Using the following table, measure the resistance between the vehicle security module C2113c harness side and ground:

VEHICLE SECURITY MODULE C2113C SPECIFICATION

Vehicle Security Module C2113c	Circuit
pin 2	121 (YE/BK)
pin 3	123 (RD)
pin 9	122 (YE)

Fig 1: Checking Circuits 121 (YE/BK), 122 (YE), And 123 (RD) For Resistance To Ground

Courtesy of FORD MOTOR CO.

Is any resistance less than 10,000 ohms?

Yes : GO to F3.

No : GO to F4.

F3 CHECK CIRCUITS 121 (YE/BK), 122 (YE), AND 123 (RD) FOR A SHORT TO GROUND

Disconnect: Remote Keyless Entry (RKE) Keypad C500.

Using the following table, measure the resistance between the vehicle security module C2113c harness side and ground:

VEHICLE SECURITY MODULE C2113C SPECIFICATION

Vehicle Security Module C2113c	Circuit
pin 2	121 (YE/BK)
pin 3	123 (RD)
pin 9	122 (YE)

Fig 2: Checking Circuits 121 (YE/BK), 122 (YE), And 123 (RD) For Short To Ground

Courtesy of FORD MOTOR CO.

Is any resistance less than 10,000 ohms?

Yes : REPAIR the circuit(s) in question. CLEAR the DTCs. REPEAT the self-test.

No : INSTALL a new RKE keypad. REFER to REMOTE KEYLESS ENTRY KEYPAD . CLEAR the DTCs. REPEAT the self-test.

F4 CHECK CIRCUITS 121 (YE/BK), 122 (YE), 123 (RD), AND 124 (BN) FOR AN OPEN

Disconnect: RKE Keypad C500.

Use the following table to measure the resistance between the vehicle security module C2113c, harness side and RKE keypad C500 harness side:

VEHICLE SECURITY MODULE C2113C SPECIFICATION

Vehicle Security Module C2113c	Circuit	RKE Keypad C500
pin 2	121 (YE/BK)/ 78 (LB/YE)	pin 1
pin 3	123 (RD)/ 121 (YE/BK)	pin 7
pin 4	124 (BN)	pin 6
pin 9	122 (YE)/ 79 (LG/RD)	pin 3

Fig 3: Checking Circuits 121 (YE/BK), 122 (YE), 123 (RD), And 124 (BN) For Open

Courtesy of FORD MOTOR CO.

Are the resistances 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(s) in question. CLEAR the DTCs. REPEAT the self-test.

F5 CHECK FOR CORRECT VEHICLE SECURITY MODULE OPERATION
- Disconnect all the vehicle security module connectors.
- Check for:
  - corrosion
  - 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 . 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.