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Pinpoint Test JC

  1. Start engine. Observe warning for several minutes. Test charging system. If charging system is okay, go to next step. If charging system is not okay, repair as necessary.
  2. Unplug 8-pin connector C120, located at lower left of engine. There is another 8-pin connector in the same area; connector C120 has a Light Green/Red wire. If charge warning remains, go to next step. If charge warning light goes away, repair alternator.
  3. Turn ignition off, then on. Remove Light Green/Red jumper wire at connector. Measure voltage between remaining Light Green/Red wire at connector to ground. If voltage is not higher than 4 volts, go to next step. If voltage is higher than 4 volts, go to step 5).
  4. Turn ignition off. Remove EIC. See, under REMOVAL & INSTALLATION, ELECTRONIC INSTRUMENT CLUSTER (EIC) R & I  . Inspect for loose or corroded screws on charge indicator resistor located on back of EIC. Replace resistor if resistance is not 400-500 ohms. Check for continuity between resistor screws and Light Green/Red wire at connector C120. Check for short to ground on Light Green/Red wire between EIC and connector C120, also between connector C120 and alternator connector. Repair wiring as necessary.
  5. Turn ignition off. Remove EIC. See, under REMOVAL & INSTALLATION, ELECTRONIC INSTRUMENT CLUSTER (EIC) R & I  . Check for continuity between EIC 16-pin connector pin No. 34 (Light Green/Red wire) and 12-pin connector pin No. 4 (Pink/Orange wire). If continuity exists, replace EIC. If continuity does not exist, repair Light Green/Red wire.
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