Diagnostic Procedure

1. Turn ignition switch OFF.
2. Loosen and retighten two ground screws on the body. Refer to "GROUND INSPECTION ".
   Fig 1: Checking ECM Ground Connections

   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 1 and ground with CONSULT-II or tester.
   • Voltage: Approximately 5V 
   Fig 3: Checking Voltage Between PSP Sensor Terminal 1 And Ground

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

OK or NG 

• OK : GO TO  4.
• 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 3 and ECM terminal 67, TCM terminal 42.
   • 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 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