Start Signal System Test
- Locate ECM harness connector. ECM is located behind glove box. Turn ignition switch to START position. Measure voltage between ground and ECM harness connector terminal No. 34 (Blue/Black wire). 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.
- Turn ignition off. Disconnect ECM harness connector. Disconnect ignition switch harness connector. Check continuity between ECM harness connector terminal No. 34 (Blue/Black wire) and ignition switch harness connector Red/Green wire terminal. See Fig 1
. Continuity should exist.
- If continuity exists, check ECM, harness, and connector terminals for damage or corrosion. Repair as necessary. If continuity does not exist, repair open harness or connectors between ignition switch and ECM harness connector. Also check 5-amp fuse located in fuse box under left instrument panel. Repair or replace as necessary.
Courtesy of NISSAN MOTOR CO., U.S.A.