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Gauges/Indicators Erratic Or Inoperative

  1. Check 10A RELAYS fuse located in interior fuse junction panel. If fuse is not okay, go to next step. If fuse is okay, go to step 4).
  2. With ignition in OFF position, replace 10A RELAYS fuse. Turn ignition switch to ON position. If fuse fails again, go to next step. If fuse does not fail, go to step 4).
  3. With ignition switch in OFF position, replace 10A RELAYS fuse. Remove instrument cluster. See INSTRUMENT CLUSTER  in REMOVAL & INSTALLATION. Disconnect instrument cluster connectors. Turn ignition switch to ON position. If fuse does not fail again, go to next step. If fuse fails, repair shorted Blue wire between interior fuse junction panel and instrument cluster. See WIRING DIAGRAMS  .
  4. With ignition switch in OFF position and instrument cluster connectors disconnected, measure voltage on Blue wire at each instrument cluster connector. If voltages are more than 10 volts, go to step 5). If voltages are not more than 10 volts, repair open Blue wire(s) in question.
  5. With ignition switch in OFF position and instrument cluster connectors disconnected, measure resistance between connector C270, terminal No. 6 (Black wire) and ground, and between connector C268, terminal No. 5 (Black/Red wire) and ground. See Figure and Figure . If resistances are less than 5 ohms, replace instrument cluster printed circuit. If resistances are more than 5 ohms, service wire(s) in question.
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