Diagnostic Procedure

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

CHECK FLUID TEMPERATURE SENSOR SIGNAL
With CONSULT-II
1. Start engine.
2. Select "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-II.
3. Read out the value of "FLUID TEMP SE".
  
  Fig 1: Item Condition Display Value Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 2: CONSULT-II Screen Display - TRANSMISSION
  Courtesy of NISSAN MOTOR CO., U.S.A.
With CONSULT-II
1. Start engine.
2. Check voltage between TCM connector terminals 41 and 42 while warming up A/T. Refer to "WIRING DIAGRAM---AT---FTSP ".
  
  Fig 3: Terminals Voltage Reference Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 4: Checking Voltage Between TCM Connector Terminals 41 And 42 While Warming Up A/T
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Turn ignition switch "OFF".
4. Disconnect the TCM connector.
5. Check if there is continuity between the connector terminal and ground.
OK or NG
1. OK: GO TO 5.
2. NG: GO TO 2.
CHECK FLUID TEMPERATURE SENSOR CIRCUIT
1. Turn ignition switch "OFF".
2. Disconnect the TCM connector.
3. Check resistance between terminals 41 and 42.
  
  Fig 5: Terminals Resistance Reference Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 6: Checking Resistance Between Fluid Temperature Sensor Terminals 41 And 42
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. Disconnect the TCM connector.
5. Check if there is continuity between the connector terminal and ground.
OK or NG
1. OK: GO TO 5.
2. NG: GO TO 3.
CHECK FLUID TEMPERATURE SENSOR
1. Turn ignition switch "OFF".
2. Disconnect terminal cord assembly harness connector.
3. Check resistance between terminals 4 and 8.
  
  Fig 7: Terminals Resistance Reference Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 8: Checking Resistance Between Fluid Temperature Sensor Terminals 4 And 8
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. Reinstall any part removed.
OK or NG
1. OK: GO TO 4.
2. NG: Replace the transaxle assembly. Refer to "REMOVAL AND INSTALLATION ".
CHECK HARNESS BETWEEN TCM AND FLUID TEMPERATURE SENSOR
Check the following.
- Open or short-circuit in the harness between TCM and A/T fluid temperature sensor.
OK or NG
1. OK: GO TO 5.
2. NG: Repair or replace damaged parts.
CHECK DTC
Perform "DTC Confirmation Procedure". Refer to "DTC CONFIRMATION PROCEDURE ".

OK or NG
1. OK: INSPECTION END
2. NG: GO TO 6.
CHECK TCM
1. Check TCM input/output signal.
2. If NG, recheck 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.