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Home >> Nissan-Datsun >> 2004 >> Maxima SE, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTC >> DTC P0121: TP Sensor >> Diagnostic Procedure >> 5. Check Throttle Position Sensor Power Supply Circuit
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5. Check Throttle Position Sensor Power Supply Circuit

  1. Disconnect electric throttle control actuator harness connector.
  2. Turn ignition switch ON.
    Fig 1: Disconnect Electric Throttle Control Actuator Harness Connector
    G00875930Courtesy of NISSAN MOTOR CO., U.S.A.
  3. Check voltage between electric throttle control actuator terminal 1 and ground with CONSULT-II or tester.
    1. Voltage: Approximately 5V 

OK or NG 

  1. OK: GO TO 6.
  2. NG: Repair open circuit or short to ground or short to power in harness or connectors.
Fig 2: Check Throttle Position Sensor Power Supply Circuit
G00875931Courtesy of NISSAN MOTOR CO., U.S.A.