Diagnostic Procedure

Check malfunction .
Is this malfunction detected only while driving in reverse?

Yes or No
1. Yes: Check A/T PNP switch R position .
  Refer to DTC P0705: PARK/NEUTRAL POSITION SWITCH .
2. No: GO TO 2.
Check other malfunctions .
Are other malfunctions also detected by self-diagnosis and CONSULT-II?

Refer to TROUBLE DIAGNOSIS WITHOUT CONSULT-II and TROUBLE DIAGNOSIS WITH CONSULT-II .

Yes or No
1. Yes: CHECK FOR OTHER MALFUNCTIONS.
  (When other malfunctions are eliminated, line pressure switch malfunction display may disappear.)
2. No: GO TO 3.
Check input signal .
1. WITH CONSULT-II GO TO 4.
2. WITHOUT CONSULT-II GO TO 5.
Check input signal .

Fig 1: Checking Input Signal Of Line Pressure Switch
Courtesy of NISSAN MOTOR CO., U.S.A.

With CONSULT-II
1. Select ECU INPUT SIGNALS in Data Monitor.
2. Read out the ON/OFF status of LINE PRES SW.
  
  Fig 2: Checking Line Pressure Switch Input Signal With CONSULT-II
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 6.
2. NG: Check the following :
  - Continuity between transfer control unit and transfer terminal cord assembly sub-harness connector
  - Transfer sub-harness
  - Line pressure switch
    Refer to 4WD SOLENOID VALVE, CLUTCH PRESSURE SWITCH AND LINE PRESSURE SWITCH under COMPONENT INSPECTION.
Check input signal .
Without CONSULT-II
1. Turn ignition switch to OFF position.
2. Disconnect transfer control unit harness connector.
3. Check continuity between transfer control unit harness connector terminal 35 and body ground.
  1. After the vehicle has been left for at least 5 minutes in a room temperature with ignition switch OFF: No continuity should exist .
  2. With ignition switch in ON, 4WD shift switch in AUTO or 4H and A/T selector lever in D: Continuity should exist .
  Fig 3: Checking Input Signal Of Transfer Control Unit Harness Connector Terminal 35 Without CONSULT-II
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 4: Locating 4WD Shift Switch Setting Position
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 6.
2. NG Check the following .
  - Continuity between transfer control unit and transfer terminal cord assembly sub-harness connector
  - Transfer sub-harness
  - Line pressure switch
    Refer to 4WD SOLENOID VALVE, CLUTCH PRESSURE SWITCH AND LINE PRESSURE SWITCH under COMPONENT INSPECTION.
Perform self-diagnosis again .
1. Check hydraulic parts.
2. After driving for a while, perform self-diagnosis again. Refer to TROUBLE DIAGNOSIS WITHOUT CONSULT-II .
OK or NG
1. OK: INSPECTION END
2. NG:
  1. Perform transfer control unit input/output signal inspection. Refer to TRANSFER CONTROL UNIT INSPECTION TABLE under TROUBLE DIAGNOSIS - GENERAL DESCRIPTION.
  2. If NG, recheck transfer control unit pin terminals for damage or loose connection with harness connector.