Pinpoint Test D: The Anti-Lock Brake System (Abs) Module Does Not Respond To The Diagnostic Tool

WARNING: This page is about a different car, the 2005 Ford RV Cutaway, 2005 Ford Econoline, 2005 Ford E450 Super Duty, and 2005 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

D1 CHECK FOR AN OPEN BETWEEN THE ABS MODULE C135 AND THE DATA LINK CONNECTOR (DLC) C251
- Key in OFF position.
- Disconnect: ABS Module C135.
- Measure the resistance between the ABS module C135-1, circuit 70 (LB/WH), harness side and the DLC C251-7, circuit 70 (LB/WH), harness side.
  
  Fig 1: Measuring Resistance Between ABS Module C135-1, Circuit 70 (LB/WH), Harness Side And DLC C251-7, Circuit 70 (LB/WH), Harness Side
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes : GO to D2.
- No : REPAIR the circuit. CLEAR the diagnostic trouble codes (DTCs). REPEAT the self-test. CARRY OUT the diagnostic tool data link test.
D2 CHECK FOR CORRECT ABS MODULE OPERATION
- Disconnect all the ABS module connectors.
- Check for:
  - corrosion
  - push-out pins
- Connect all the ABS 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 ABS module. REFER to ANTI-LOCK CONTROL . CLEAR the DTCs. REPEAT the self-test. CARRY OUT the diagnostic tool data link 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. CARRY OUT the diagnostic tool data link test.