Test B: Warning Indicator On With Engine Running, System Not Charging
- Connect New Generation Star (NGS) tester to Data Link Connector (DLC). Turn ignition on. Using NGS tester, perform Powertrain Control Module (PCM) self-test. If no DTCs are retrieved, go to next step. If any Diagnostic Trouble Codes (DTC) are retrieved, perform appropriate test in accordance with DTC retrieved. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
- Turn ignition off. Disconnect NGS tester. Disconnect generator 3-pin harness connector. Turn ignition on. Measure voltage between ground and generator harness connector terminal No. 2 (Light Blue/Red wire). See Fig 1. If voltage is not present, go to next step. If voltage is present, go to step 4.
- Turn ignition off. Disconnect PCM harness connector C175. Measure resistance of Light Blue/Red wire between generator harness connector and terminal No. 45 at PCM harness connector C175. See Fig 2. If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, repair open in Light Blue/Red wire between generator and PCM.
- Connect PCM harness connector C175. Connect generator 3-pin harness connector. Check generator output. Perform GENERATOR LOAD TEST and GENERATOR NO-LOAD TEST
under ON-VEHICLE TESTING. If generator is okay, go to next step. If generator is not okay, replace generator. See GENERATOR under REMOVAL & INSTALLATION.
- Disconnect PCM harness connector C175. Inspect harness connector for pushed out pins, corrosion or bent terminals. Repair as necessary. If harness connector is okay, reconnect and retest system operation. If fault is still present, replace PCM. Clear DTCs and repeat PCM self-test. If fault is still not present, system is operating correctly at this time.
Courtesy of FORD MOTOR CO.
Courtesy of FORD MOTOR CO.