Test B: Warning Indicator Is On With Engine Running, System Is Not Charging
WARNING: This page is about a different car, the 2003 Ford Ranger and 2002 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
- Measure voltage between ground and generator terminal B+ (Black/Orange wire). See Fig 1. If battery voltage is present, go to next step. If battery voltage is not present, repair open in Black/Orange wire between generator and battery junction box. See WIRING DIAGRAMS .
- Disconnect generator 3-pin harness connector. Measure voltage between ground and generator harness connector terminal "A" (Yellow/White wire). See Fig 2. If battery voltage is present, go to next step. If battery voltage is not present, repair circuit between battery and generator. See WIRING DIAGRAMS .
- Turn ignition on. Measure voltage between ground and generator harness connector terminal "I" (Light Green/Red wire). If voltage is equal to battery voltage, go to next step. If voltage is not equal to battery voltage, repair open in Light Green/Red wire between generator connector and instrument cluster. See WIRING DIAGRAMS .
- Connect generator 3-pin harness connector. Start engine and let idle. Measure voltage between positive battery terminal and generator terminal B+ (Black/Orange wire). If voltage drop is less than 0.5 volt, replace generator. If voltage drop is 0.5 volt or more, repair circuit between generator and battery. See WIRING DIAGRAMS .