Inspection/Engine Revolution Signal

CHECK ECM OUTPUT
1. Start engine.
2. Check voltage between combination meter harness connector terminal 16 and ground at idle and 2,000 RPM.
  
  Fig 1: checking ECM output
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: Engine revolution signal is OK.
2. NG: Harness for open or short between ECM and combination meter