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Temperature Gauge: G20

  1. To check power source, turn ignition on. Check voltage between terminal No. 25 and ground. See Figure . If battery voltage is present, go to step 3).
  2. If battery voltage is not present, check for blown fuse or fusible link. Check continuity between battery terminal and combination meter. Check battery circuit from ignition switch and relay. See appropriate wiring diagram in the WIRING DIAGRAMS Section.
  3. Turn ignition on. Connect a test light with a 3.4 watt bulb between temperature gauge terminal "B" and ground. See Figure . If gauge needle does not move smoothly to "H", replace gauge. If needle moves smoothly to "H", check continuity between combination meter terminal No. 5 and ground.
  4. If continuity is not present, check wiring. If continuity is present, test temperature gauge sending unit. See TEMPERATURE GAUGE SENDING UNIT  under TESTING.
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