Test A: 4-Wheel Anti-Lock Brake System Module Does Not Respond To NGS Tester
WARNING: This page is about a different car, the 2001 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
- Turn ignition switch to LOCK position. Disconnect 4-Wheel Anti-Lock Brake System (4WABS) module Black 24-pin harness connector C146. 4WABS module is located in left front of engine compartment. Inspect 4WABS harness connector for loose, damaged or corroded terminals. If harness connector is okay, go to next step. If harness connector is damaged, repair as necessary.
- Measure resistance in Light Blue/White wire between 4WABS module harness connector C146 terminal No. 5 and Data Link Connector (DLC) terminal No. 7. See Figure and Fig 1 . If resistance is more than 5 ohms, go to next step. If resistance is 5 ohms or less, replace 4WABS module. See appropriate ANTI-LOCK article in BRAKES.
- Disconnect Gray 40-pin harness connector C160. Connector C160 is located in left rear corner of engine compartment, near firewall. Inspect harness connector for loose, damaged or corroded terminals. If harness connector is okay, go to next step. If harness connector is damaged, repair as necessary.
- Measure resistance in Light Blue/White wire between harness connector C160 (female side) terminal No. 29 and DLC terminal No. 7. See Figure and Fig 2 . If resistance is 5 ohms or less, repair open in Light Blue/White wire between 4WABS module and male half of harness connector C160. If resistance is more than 5 ohms, repair open in Light Blue/White wire between female half of harness connector C160 and DLC. See WIRING DIAGRAMS .