LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2004 >> Q45 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> Refrigerant Pressure Sensor >> Diagnostic Procedure >> 3. Check Refrigerant Pressure Sensor Power Supply Circuit
April 5, 2026: LEMON Manuals is launched! Read the announcement.

3. Check Refrigerant Pressure Sensor Power Supply Circuit

  1. Disconnect refrigerant pressure sensor harness connector.
  2. Turn ignition switch ON.
  3. Check voltage between refrigerant pressure sensor terminal 1 and ground with CONSULT-II or tester.
    1. Voltage: Approximately 5V 
Fig 1: Checking Voltage Between Refrigerant Pressure Sensor Terminal 1 & Ground
G00761400Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK: GO TO 5.

NG: GO TO 4.