Test A: 4-Wheel Anti-Lock Brake System (4WABS) Module Does Not Respond To NGS Tester
- Turn ignition off. Disconnect 4WABS module 24-pin connector, located on left front frame rail. Inspect connector for loose, damaged or corroded terminals. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between terminal No. 5 at 4WABS module connector and terminal No. 7 at DLC. See Figure and Fig 1
. If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, replace 4WABS module and retest system for normal operation.
- Disconnect Natural 76-pin connector C234 located on driver's side of engine compartment on firewall. Inspect connector for loose, damaged or corroded terminals. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between terminal No. 43 at female half of connector C234 and terminal No. 7 at DLC. See Figure and Fig 2
. If resistance is less than 5 ohms, repair open Light Blue/White wire between 4WABS module connector and connector C234. If resistance is 5 ohms or more, repair Light Blue/White wire between DLC and connector C234. Retest system for normal operation.
Courtesy of FORD MOTOR CO.
Courtesy of FORD MOTOR CO.