Pinpoint Test A: The Anti-Lock Brake System (Abs) Module Does Not Respond To The Diagnostic Tool
WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Use the correct probe adaptor(s) when making measurements. Failure to use the correct probe adaptor(s) may damage the connector.
- A1 CHECK THE ABS MODULE C135 FOR DAMAGE
- Key in OFF position.
- Disconnect: ABS Module C135.
- Inspect the ABS module C135 for damage.
- Is the ABS module C135 OK?
Yes : GO to A2.
No : REPAIR the ABS module C135 as necessary. CARRY OUT the diagnostic tool data link test.
- A2 CHECK THE CAN CIRCUITS BETWEEN THE DLC AND THE ABS MODULE FOR AN OPEN
- Measure the resistance between the ABS module C135-18, circuit 1827 (WH/LG), harness side and the DLC C251-6, circuit 1827 (WH/LG), harness side.
- Measure the resistance between the ABS module C135-28, circuit 1828 (PK/LG), harness side and the DLC C251-14, circuit 1828 (PK/LG), harness side.
- Are the resistances less than 5 ohms?
Yes : GO to A3.
No : REPAIR the circuit. CARRY OUT the diagnostic tool data link test.
- A3 CHECK FOR CORRECT ABS MODULE OPERATION
- Disconnect all the ABS module connectors.
- Check for:
- corrosion
- pushed-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 VEHICLE DYNAMIC SYSTEMS . CLEAR the diagnostic trouble codes (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.