Test A: 4-Wheel Anti-Lock Control System Does Not Respond To NGS
- Turn ignition off. Disconnect 4-wheel ABS control module 24-pin connector C144 (located on left front frame rail). Inspect anti-lock brake module connector C144 for damage. If anti-lock brake module connector is okay, go to next step. If anti-lock brake module connector is damaged, repair as necessary. Retest system for normal operation.
- Measure resistance between 4-wheel ABS control module 24-pin connector C144 pin No. 5 and DLC pin No. 7 (Light Blue/White wire). See Figure and Fig 1. If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, replace ABS module. Retest system for normal operation.
- Ensure ignition is off. Disconnect Natural 76-pin harness connector C234 (on driver's side of engine compartment on safety wall). Inspect harness connector C234 for damage. If harness connector C234 is okay, go to next step. If harness connector C234 is damaged, repair as necessary. Retest system for normal operation.
- Measure resistance between DLC pin No. 7 and male side of 76-pin harness connector C234 pin No. 43 (Light Blue/White wire). See Figure and Fig 2. If resistance is less than 5 ohms, repair Light Blue/White wire between 4-wheel ABS control module 24-pin connector C144 and 76-pin harness connector C234. If resistance is 5 ohms or more, repair Light Blue/White wire between DLC and 76-pin harness connector C234. Retest system for normal operation.
Courtesy of FORD MOTOR CO.
Courtesy of FORD MOTOR CO.