Diagnostic Procedure

WARNING: This page is about a different car, the 2003 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.

CHECK INPUT SIGNALS
With CONSULT-II
1. Start engine.
2. Select ECU INPUT SIGNALS in DATA MONITOR mode for TRANSMISSION with CONSULT-II.
  
  Fig 1: Checking Input Signals
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Start vehicle and read out the value of PRI SPEED SEN.
  
  Fig 2: Input Signals Check Table
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  OK or NG
  1. OK: GO TO 6.
  2. NG: GO TO 2.
CHECK INPUT SPEED SENSOR (PRIMARY SPEED SENSOR)
1. Start engine.
2. Check voltage between TCM connector terminals 46 (L/O) and 42 (W/R).
  
  Fig 3: Checking Voltage Between TCM And Terminals
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 4: Input Speed Sensor Data
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check the pulse with CONSULT-II or oscilloscope. When vehicle cruises.
  
  Fig 5: Displaying Condition Of Primary Speed Sensor
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 6: Input Speed Sensor Data
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  OK or NG
  1. OK: GO TO 6.
  2. NG: Battery voltage is not supplied: GO TO 3.
  3. NG: Battery voltage is supplied, but there is a malfunction in the frequency: GO TO 4.
CHECK THE HARNESS BETWEEN TCM AND CVT UNIT HARNESS CONNECTOR (SENSOR POWER AND SENSOR GROUND)
1. Turn ignition switch OFF.
2. Disconnect the TCM connector and CVT unit harness connector.
3. Check continuity between TCM connector and CVT unit harness connector.
  
  Fig 7: Checking Continuity Between TCM And CVT
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 8: Continuity Between TCM And CVT Unit Harness Connector Check Table (1 Of 2)
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 9: Continuity Between TCM And CVT Unit Harness Connector Check Table (2 Of 2)
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. If OK, check harness for short to ground and short power.
5. Reinstall any part removed.
  OK or NG
  1. OK: GO TO 6.
  2. NG: Repair open circuit or short to ground or short to power in harness or connectors.
CHECK THE HARNESS BETWEEN TCM AND CVT UNIT HARNESS CONNECTOR [INPUT SPEED SENSOR (PRIMARY SPEED SENSOR)]
1. Turn ignition switch OFF.
2. Disconnect the TCM connector and CVT unit harness connector.
3. Check continuity between TCM connector and CVT unit harness connector.
  
  Fig 10: Checking Continuity Between TCM And CVT
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 11: Continuity Between TCM And CVT Unit Harness Connector Check Table
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. If OK, check harness for short to ground and short power.
5. Reinstall any part removed.
  OK or NG
  1. OK: GO TO 5.
  2. NG: Repair open circuit or short to ground or short to power in harness or connectors.
CHECK THE TCM SHORT
1. Replace same type TCM, perform self-diagnosis. Erase self-diag result and them drive the vehicle [10km/h (6MPH) or more], perform self-diagnosis. Refer to DTC CONFIRMATION PROCEDURE .
2. Is the IN PY SPD SEN/CIR detected again?
  Yes or No
  1. YES: Replace the transaxle assembly. Refer to REMOVAL AND INSTALLATION .
  2. NO: Replace the TCM. Refer to PRECAUTIONS FOR CVT ASSEMBLY REPLACEMENT .
CHECK DTC
Perform DTC Confirmation Procedure. Refer to DTC CONFIRMATION PROCEDURE .

OK or NG
1. OK: INSPECTION END .
2. NG: GO TO 7.
PERFORM TCM INSPECTION
1. Perform TCM input/output signal inspection.
2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector.
  OK or NG
  1. OK: INSPECTION END .
  2. NG: Repair or replace damaged parts.