Pinpoint Test G: The Vehicle Security Module Does Not Respond To The Diagnostic Tool

WARNING: This page is about a different car, the 2005 Ford Pickup, 2005 Ford F550 Super Duty, 2005 Ford F450 Super Duty, and 2005 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

G1 CHECK THE VEHICLE SECURITY MODULE C2113C FOR DAMAGE
- Key in OFF position.
- Disconnect: Vehicle Security Module C2113c.
- Inspect the vehicle security module C2113c for damage.
- Is the vehicle security module C2113c OK?
- Yes : GO to G2.
- No : REPAIR the vehicle security module C2113c as necessary. CARRY OUT the data link diagnostics test.
G2 CHECK CIRCUIT 693 (OG) FOR AN OPEN BETWEEN THE DATA LINK CONNECTOR (DLC) C251 AND THE VEHICLE SECURITY MODULE C2113C
- Measure the resistance between the vehicle security module C2113c pin 5, circuit 693 (OG), harness side and the DLC C251 pin 3, circuit 693 (OG), harness side.
  
  Fig 1: Measuring Resistance Between Vehicle Security Module C2113C Pin 5 Circuit 693 (OG) & DLC C251 Pin 3, Circuit 693 (OG)
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes : GO to G3.
- No : REPAIR the circuit. CARRY OUT the data link diagnostics test.
G3 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 . CARRY OUT the data link diagnostics test.
- No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the diagnostic trouble codes (DTCs). REPEAT the self-test.