Diagnostic Procedure

Do you have CONSULT-II?

Yes or No 

1. Yes: GO TO 2.
2. No: GO TO  6.

With CONSULT-II 

1. Start engine.
2. Select "TCM INPUT SIGNALS" in "DATA MONITOR" mode for "A/T" with CONSULT-II.
3. Read out the value of "FLUID TEMP SE".
   Fig 1: Checking Input Signal Of A/T Fluid Temperature Sensor (With Consult-II)

   Courtesy of NISSAN MOTOR CO., U.S.A.
   1. Voltage: Cold [20°C (68°F)] --> Hot [80°C (176°F)] 
   2. : Approximately 1.5V --> 0.5V 

OK or NG 

1. OK: GO TO  7.
2. NG: GO TO 3.

1. Turn ignition switch to OFF position.
2. Disconnect terminal cord assembly connector in engine compartment.
3. Check resistance between terminal cord assembly F30 terminals 6 and 7 (component side) when A/T is cold.
   Fig 2: Checking A/T Fluid Temperature Sensor With Terminal Cord Assembly

   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.

Check the following items:

• Harness for short to ground or short to power or open between TCM, ECM and terminal cord assembly (Main harness)
• Ground circuit for ECM

  Refer to "TROUBLE DIAGNOSIS FOR POWER SUPPLY ".

OK or NG 

1. OK: GO TO  7.
2. NG: Repair or replace damaged parts.

1. Remove oil pan.
2. Check the following items:

• A/T fluid temperature sensor

  Check resistance between two terminals while changing temperature as shown in figure.

  Fig 3: Temperature Resistance Chart

  Courtesy of NISSAN MOTOR CO., U.S.A.
  Fig 4: 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.

Without CONSULT-II 

1. Start engine.
2. Check voltage between TCM connector F57 terminal 47 (BR) and ground while warming up A/T.
   1. Voltage: Cold [20°C (68°F)] --> Hot [80°C (176°F)] 
   2. : Approximately 1.5V --> 0.5V 

OK or NG 

1. OK: GO TO 7.
2. NG: GO TO  3.

Fig 5: Checking Input Signal Of A/T Fluid Temperature Sensor (Without Consult-II)

Courtesy of NISSAN MOTOR CO., U.S.A.

Perform "DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE ".

OK or NG 

1. OK: INSPECTION END 
2. NG: GO TO 8.

1. perform TCM input/output signal inspection.
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.