Test J: Improper Charge Warning Operation: Coupe
- Remove instrument cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION. Remove charge system warning light bulb. Check continuity between terminals of bulb. If continuity exists, go to next step. If continuity does not exist, replace charge system warning light bulb.
- Disconnect instrument cluster harness connector C253. See Figure . Disconnect generator voltage regulator 3-pin connector C159. Measure resistance of White/Blue wire between instrument cluster harness connector C253 terminal No. 11 and voltage regulator harness connector C159. Resistance should be less than 5 ohms. Measure resistance between ground and instrument cluster electrical harness connector C253 terminal No. 11 (White/Blue wire). Resistance should be more than 10 k/ohms. Measure resistance between ground and instrument cluster electrical harness connector C252 terminal No. 11 (White/Blue wire). See Figure . Resistance should be more than 10 k/ohms. If resistances are as specified, go to next step. If resistances are not as specified, repair open or short to ground in White/Blue wire between appropriate instrument cluster connector and generator voltage regulator connector. See WIRING DIAGRAMS .
- Visually inspect instrument cluster printed circuit for damage, cracks or hot spots. If instrument cluster printed circuit is okay, check charging system. See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS. If instrument cluster printed circuit is damaged, replace printed circuit and gauge contact clips. See PRINTED CIRCUIT under REMOVAL & INSTALLATION.