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Temperature Gauge

  1. To check power source, turn ignition switch on. Check voltage between specified temperature gauge terminal and ground. See FUEL & TEMPERATURE GAUGE TEST TERMINALS  table. See Figure and Figure . Ensure battery voltage is be present. If battery voltage is present, go to step 3).
  2. If battery voltage is not present, check for blown fuse or fusible link. Check harness continuity between battery terminal and combination meter. Check for defective ignition relay and/or ignition switch.
  3. Turn ignition on. Connect a jumper wire with a 3.4 watt light bulb between temperature gauge terminal and ground for less than 10 seconds. Temperature gauge should move smoothly to end of scale. If gauge does not move smoothly to end of scale, replace gauge. If gauge moves smoothly to end of scale, check temperature sending unit. See TEMPERATURE SENDING UNIT. If sending unit is okay, repair or replace sending unit harness.
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