Test B: System Is Not Charging, Charge Warning Indicator Operates Properly
WARNING: This page is about a different car, the 2002 Mercury Villager. However, it is still accessible from the selected car via links, so may be relevant.
- Perform BASE VOLTAGE and GENERATOR NO-LOAD TEST under ON-VEHICLE TESTING. If generator output is lower than specified, go to next step. If generator output is as specified, check battery state of charge and perform battery load test according to load tester manufacturer's instructions.
- Turn ignition off. Inspect drive belt condition and tension. See ADJUSTMENTS . Adjust, repair or replace belt as necessary and check system operation. If drive belt is okay, go to next step.
- Disconnect generator B+ connector. Measure voltage between generator connector Black/White wire terminal and ground. If battery voltage is present, go to next step. If battery voltage is not present, repair circuit and check system operation. See WIRING DIAGRAMS .
- Disconnect generator 2-pin connector. Measure voltage between generator 2-pin connector terminal No. 2 (Blue wire) and ground. See Figure. If battery voltage is present, go to next step. If battery voltage is not present, repair circuit as necessary. Check system operation.
- Disconnect generator ground connector (smaller gauge Black wire). Measure resistance between generator connector Black wire and ground. If resistance is greater than 5 ohms, repair ground wire or ground connection, and check system operation. If resistance is 5 ohms or less, replace generator. See GENERATOR under REMOVAL & INSTALLATION.