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Home >> Nissan-Datsun >> 1995 >> Maxima GLE, RE4F04A >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests 3.0L >> Ignition Systems >> Start Signal System Test
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Start Signal System Test

  1. Locate ECM harness connector. ECM is located under center of instrument panel (connector is on passenger's side). Turn ignition switch to START position. Measure voltage between ground and ECM harness connector terminal No. 20 (Brown/White wire). See Figure . Battery voltage should be present in START position ONLY. Zero volts should be present in any other ignition switch position. If voltage is not as specified, go to next step. If voltage is as specified, system is functioning properly.
  2. Turn ignition off. Disconnect ECM sub-harness connector. Turn ignition switch to START position. Measure voltage between ground and ECM sub-harness connector terminal No. 17 (Brown/White wire). Battery voltage should be present in START position ONLY. Zero volts should be present in any other ignition switch position.
  3. If voltage is not as specified, repair open harness or connectors between ignition switch, 7.5 amp fuse, and ECM sub-harness connector. If voltage is as specified, check ECM terminals, harness and connectors for pushed-out, damaged, or corroded terminals. Repair or replace as necessary.
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