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Printed Circuit Check

  1. Turn ignition off. Disconnect gauges wiring harness connector from rear of gauge package, including volt- meter sender unit. Using DVOM, measure resistance in printed circuit from gauge package terminal No. 2 (fuel and coolant temperature gauge) or from terminal No. 5 (voltmeter and oil pressure gauge) to gauge battery terminal of suspected defective gauge. See Figure . DVOM should read zero ohms. If reading is not zero ohms, repair/replace printed circuit.
  2. Using DVOM, measure resistance from gauge package terminal No. 3 to ground terminal of suspected defective gauge. Reading should be zero ohms. If any resistance is present, repair/replace printed circuit. If zero ohms are present in printed circuit of gauge being tested, gauge is defective. Replace defective gauge.
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