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Home >> Infiniti >> 2004 >> Q45 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> DTC P0550: PSP Sensor >> Diagnostic Procedure >> 2. Check PSP Sensor Power Supply Circuit
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2. Check PSP Sensor Power Supply Circuit

  1. Disconnect power steering pressure (PSP) sensor harness connector.
  2. Turn ignition switch ON.
  3. Check voltage between PSP sensor terminal 1 and ground with CONSULT-II or tester.
    1. Voltage: Approximately 5V 

OK or NG 

OK : GO TO 4.

NG : GO TO 3.

Fig 1: Checking voltage between PSP sensor terminal 1 & ground
G00760464Courtesy of NISSAN MOTOR CO., U.S.A.