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.

INSPECTION START
Do you have CONSULT-II?

Yes or No
1. Yes: GO TO 2.
2. No: GO TO 6.
CHECK INPUT SIGNAL OF A/T FLUID TEMPERATURE SENSOR (WITH CONSULT-II)
With CONSULT-II
1. Start engine.
  
  Fig 1: CONSULT-II Display - DATA MONITOR
  Courtesy of NISSAN MOTOR CO., U.S.A.
2. Select "DATA MONITOR" mode for "A/T" with CONSULT-II.
3. Read out the value of "FLUID TEMP SE".
Voltage: Cold [20°C (68°F)] --> Hot [80°C (176°F)]

Approximately 1.5V --> 0.5V

OK or NG
1. OK: GO TO 7.
2. NG: GO TO 3.
CHECK A/T FLUID TEMPERATURE SENSOR WITH TERMINAL CORD ASSEMBLY
1. Turn ignition switch to OFF position.
  
  Fig 2: A/T Fluid Temperature Sensor Temperature/Resistance Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
2. Disconnect terminal cord assembly connector in engine compartment.
3. Check resistance between terminal cord F30 terminals 6 and 7 when A/T is cold.
  
  Fig 3: Checking Resistance Between Terminal Cord F30 Terminals 6 And 7
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. Reinstall any part removed.
OK or NG
1. OK: GO TO 4.
2. NG: GO TO 5.
DETECT MALFUNCTIONING ITEM
Check the following items:
- Harness for short to ground or short to power or open between TCM, ECM and terminal cord assembly
- Ground circuit for ECM
  Refer to GROUND DISTRIBUTION & POWER DISTRIBUTION
OK or NG
1. OK: GO TO 7
2. NG: Repair or replace damaged parts.
DETECT MALFUNCTIONING ITEM
1. Remove oil pan. Refer to "CONTROL VALVE ASSEMBLY AND ACCUMULATORS "
  
  Fig 4: Temperature/Resistance Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
2. Check the following items:
  - A/T fluid temperature sensor
    - Check resistance between two terminals while changing temperature as shown at below.
      
      Fig 5: Checking A/T Fluid Temperature Sensor
      Courtesy of NISSAN MOTOR CO., U.S.A.
  - Harness of terminal cord assembly for short or open
OK or NG
1. OK: GO TO 7.
2. NG: Repair or replace damaged parts.
CHECK INPUT SIGNAL OF A/T FLUID TEMPERATURE SENSOR (WITHOUT CONSULT-II)
Without CONSULT-II
1. Start engine.
  
  Fig 6: Temperature/Voltage Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
2. Check voltage between TCM harness connector E143 terminal 47 (G) and ground while warming up A/T.
  
  Fig 7: Checking Voltage Between TCM Harness Connector E143 Terminal 47 (G) And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 7.
2. NG: GO TO 3.
CHECK DTC
Perform "DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE ".

OK or NG
1. OK: INSPECTION END
2. NG: GO TO 8.
CHECK TCM INSPECTION
1. perform TCM input/output signal inspection. Refer to "TCM TERMINALS AND REFERENCE VALUE ".
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.