Diagnostic Procedure

1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body. Refer to "GROUND INSPECTION ".
   Fig 1: Loosening & Retightening Ground Screws

   Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

• OK: GO TO 2.
• NG: Repair or replace ground connections.

1. Disconnect PSP sensor harness connector.
   Fig 2: Disconnecting PSP Sensor Harness Connector

   Courtesy of NISSAN MOTOR CO., U.S.A.
2. Turn ignition switch ON.
3. Check voltage between PSP sensor terminal 3 and ground with CONSULT-II or tester.
   Fig 3: Checking Voltage Between PSP Sensor Terminal 3 & Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.
   • Voltage: Approximately 5V 

OK or NG

• OK: GO TO 3.
• NG: Repair open circuit or short to ground or short to power in harness or connectors.

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect TCM harness connector.
4. Check harness continuity between PSP sensor terminal 1 and ECM terminal 67, TCM terminal 42. Refer t WIRING DIAGRAM .
   • Continuity should exist. 
5. Also check harness for short to ground and short to power.

OK or NG

• OK: GO TO  5.
• NG: GO TO 4.

Check the following.

• Harness connectors E19, F33
• Harness for open or short between power steering pressure sensor and ECM
• Harness for open or short between power steering pressure sensor and TCM

• : Repair open circuit or short to ground or short to power in harness or connectors.

1. Check harness continuity between ECM terminal 12 and PSP sensor terminal 2.
   • Continuity should exist. 
2. Also check harness for short to ground and short to power.

OK or NG

• OK: GO TO 6.
• NG: Repair open circuit or short to ground or short to power in harness or connectors.

Refer to "COMPONENT INSPECTION ".

OK or NG

• OK: GO TO 7.
• NG: Replace PSP sensor.

Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

• : INSPECTION END