Test E: 4-Wheel Air Suspension (4WAS) Module Does Not Respond To NGS Tester
WARNING: This page is about a different car, the 1997 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
- Check position of air suspension switch. Switch is located below glove box, above right kick panel. If air suspension switch is on, go to next step. If air suspension switch is off, turn switch on and retest system.
- Turn ignition off. Disconnect 4WAS module Black connector C296 located behind center of instrument panel. See Fig 1 . Inspect connector C296 and Data Link Connector (DLC) C228 for physical damage, bent terminals or corrosion. Repair as necessary and retest system. If connectors are okay, go to next step.
- Measure resistance of Light Blue/White wire between 4WAS module connector C296, terminal No. 29 and DLC C228, terminal No. 7. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Light Blue/White wire between 4WAS module and DLC. Retest system.
- Reconnect 4WAS module connector C296. Perform data link diagnostics. See DATA LINK DIAGNOSTICS under COMMUNICATION NETWORK DIAGNOSTICS. If 4WAS module responds to NGS tester, system is functioning properly. If 4WAS module does not respond to NGS tester, replace 4WAS module and retest system.