Test F: Powertrain Control Module Does Not Respond To WDS Or NGS Tester
WARNING: This page is about a different car, the 2002 Ford Pickup, 2002 Ford F550 Super Duty, 2002 Ford F450 Super Duty, and 2002 Ford Excursion. However, it is still accessible from the selected car via links, so may be relevant.
- Turn ignition switch to LOCK position. Disconnect Powertrain Control Module (PCM) 104-pin harness connector C175. Inspect PCM connector for loose, damaged or corroded terminals. Repair connector as necessary. If PCM terminals are okay, go to next step.
- Measure resistance of Tan/Orange wire between PCM harness connector C175 terminal No. 16 and Data Link Connector (DLC) terminal No. 2. See Figure and Fig 1 . Also measure resistance of Pink/Light Blue wire between PCM harness connector C175 terminal No. 15 and DLC terminal No. 10. If each resistance is less than 5 ohms, go to step 4. If either resistance is 5 ohms or more, go to next step.
- Disconnect in-line harness connector C144. Measure resistance of Tan/Orange wire between in-line connector C144 (female side) terminal No. 14 and DLC terminal No. 2. See Figure and Fig 2 . Also measure resistance of Pink/Light Blue wire between in-line connector C144 (female side) terminal No. 13 and DLC terminal No. 10. If each resistance is less than 5 ohms, repair open in Tan/Orange wire and/or Pink/Light blue wire between PCM connector and in-line C144 connector (male side). If either resistance is 5 ohms or more, repair open in appropriate wire between in-line connector C144 (female side) and DLC.
- Disconnect PCM connectors and inspect for loose, damaged or corroded terminals. Repair connector as necessary. Reconnect all connectors. Operate system to verify problem. If problem is present, replace PCM. See appropriate REMOVAL, OVERHAUL & INSTALLATION article in ENGINE PERFORMANCE. If problem no longer exists, problem may have been caused by poor contact at connector.