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Home >> Infiniti >> 2003 >> M45 >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Auto Cruise Control System >> Automatic Speed Control Device (ASCD) >> Trouble Diagnoses >> ECM Signal Check >> 1. Check Throttle Position Sensor Signal Circuit
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

1. Check Throttle Position Sensor Signal Circuit

  1. Disconnect ASCD control unit connector and ECM connector.
  2. Check continuity between ASCD control unit harness connector M35 terminal 3 (R/G) and ECM harness connector F102 terminal 113 (R/Y).

    Continuity should exist  .

Fig 1: Checking Throttle Position Sensor Signal Circuit
G00738585Courtesy of NISSAN MOTOR CO., U.S.A.

Refer to wiring diagram in SYSTEM WIRING DIAGRAMS .

OK or NG 

  1. OK: GO TO 2.
  2. NG: Repair harness or connector.