Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.

CHECK AWD LOCK SWITCH SIGNAL
With CONSULT-II
1. Turn ignition switch "ON".
2. Select "DATA MONITOR" mode for "ALL MODE AWD/4WD" with CONSULT-II.
3. Read out monitor "4WD MODE SW" with operating AWD lock switch.
  
  Fig 1: 4WD MODE SW Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 6.
2. NG: GO TO 2.
  
  Fig 2: CONSULT-II "DATA MONITOR" Display
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK INPUT SIGNAL WITH UNIFIED METER AND A/C AMP.
With CONSULT-II
1. Turn ignition switch "ON".
2. Select "DATA MONITOR" mode for "METER A/C AMP" with CONSULT-II.
3. Read out monitor "4WD LOCK SW" with operating AWD lock switch.
  
  Fig 3: 4WD LOCK SW Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 6.
2. NG: GO TO 3.
  
  Fig 4: CONSULT-II "DATA MONITOR" Display
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK AWD LOCK SWITCH CIRCUIT
1. Turn ignition switch "OFF".
2. Disconnect unified meter and A/C amp. harness connector.
3. Operate AWD lock switch and check continuity between unified meter and A/C amp. harness connector M49 terminal 5 (BR/Y) and ground.
  
  Fig 5: Continuity Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 6.
2. NG: GO TO 4.
  
  Fig 6: Checking Continuity Between Unified Meter And A/C Amp Harness Connector M49 Terminal 5 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK AWD LOCK SWITCH
1. Turn ignition switch "OFF".
2. Disconnect AWD lock switch harness connector.
3. Operate AWD lock switch and check continuity between AWD lock switch harness connector M55 terminals 1 and 3.
  
  Fig 7: Continuity Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 5.
2. NG: Replace AWD lock switch.
  
  Fig 8: Checking Continuity Between AWD Lock Switch Harness Connector M55 Terminals 1 And 3
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK HARNESS BETWEEN UNIFIED METER AND A/C AMP. AND AWD LOCK SWITCH
1. Turn ignition switch "OFF".
2. Disconnect unified meter and A/C amp. harness connector and AWD lock switch harness connector.
3. Check continuity between unified meter and A/C amp. harness connector M49 terminal 5 (BR/Y) and AWD lock switch harness connector M55 terminal 1 (BR/Y).
  Continuity should exist.
  
  Also check harness for short to ground and short to power.
OK or NG
1. OK: GO TO 6.
2. NG: Repair or replace damaged parts.
  
  Fig 9: Checking Continuity Between Unified Meter And A/C Amp Harness Connector M49 Terminal 5 And Terminal 1
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK AWD CONTROL UNIT
Check AWD control unit input/output signal. Refer to "AWD CONTROL UNIT INPUT/OUTPUT SIGNAL REFERENCE VALUES ".

OK or NG
1. OK: GO TO 7.
2. NG: Check AWD control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.
CHECK AWD LOCK INDICATOR LAMP
1. Turn ignition switch "OFF".
2. Check AWD LOCK indicator lamp "ON" for approx. 1 second when turned ignition switch "ON".
Does AWD LOCK indicator lamp "ON" for approx. 1 second?
1. YES: INSPECTION END
2. NO: Go to "AWD LOCK INDICATOR LAMP DOES NOT TURN ON FOR APPROX. 1 SECOND WHEN THE IGNITION SWITCH IS TURNED TO ON ".