Pinpoint Test E: The Anti-Lock Brake System (ABS) Module Does Not Respond To The Diagnostic Tool
WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
- E1 CHECK THE ABS MODULE C155
- Key in OFF position.
- Disconnect: ABS Module C155.
- Inspect the ABS module C155 for damage.
- Is the ABS module C155 OK?
Yes
GO to F2.
No
REPAIR the ABS module C155. CARRY OUT the data link diagnostics test.
- E2 CHECK CIRCUITS 3125 (RD/YE) AND 3126 (TN/YE) BETWEEN THE ABS MODULE C155 AND THE DLC C251 FOR AN OPEN
- Measure the resistance between the ABS module C155-11, circuit 3126 (TN/YE), harness side and the DLC C251-6, circuit 3126 (TN/YE), harness side.
- Measure the resistance between the ABS module C155-15, circuit 3125 (RD/YE), harness side and the DLC C251-14, circuit 3125 (RD/YE), harness side.
- Are the resistances less than 5 ohms?
Yes
GO to F3.
No
REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test. CARRY OUT the data link diagnostics test.
- E3 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 data link diagnostics 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.
CARRY OUT the data link diagnostics test.