Diagnostic Procedure

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".

   Voltage :Cold [20°C (68°F)] --> Hot [80°C (176°F)] 

   :Approximately 1.5V --> 0.5V 

OK or NG

1. OK: GO TO  9.
2. NG: GO TO 2.
   Fig 1: Scan Tool Display "Data Monitor"

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

Check the following items:

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

  Refer to "POWER SUPPLY AND GROUND CIRCUIT " (with QR25DE), or "POWER SUPPLY AND GROUND CIRCUIT " (with VQ35DE).

OK or NG

1. OK: GO TO  9.
2. NG: Repair or replace damaged parts.

1. Turn ignition switch to ON position.

   (Do not start engine.)

2. Check voltage between TCM harness connector terminals 10 (R/Y), 19 (R/Y), 28 (Y/R) and ground.

   Voltage: Battery voltage 

OK or NG

1. OK: GO TO 4.
2. NG: GO TO  5.
   Fig 2: TCM Harness Connector Terminals 10, 19, 28 & Ground Voltage Test

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

1. Turn ignition switch to OFF position.
2. Check voltage between TCM harness connector terminal 28 (Y/R) and ground.

   Voltage: Battery voltage 

OK or NG

1. OK: GO TO  6.
2. NG: GO TO 5.
   Fig 3: TCM Harness Connector Terminal 28 (Y/R) & Ground Voltage Test

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

Check the following items:

• Harness for short or open between ignition switch and TCM (Main harness)
• Ignition switch and fuse

  Refer to "POWER SUPPLY ROUTING CIRCUIT ".

OK or NG

1. OK: GO TO 6.
2. NG: Repair or replace damaged parts.

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 4: Temperature & Resistance Specification Table

   Courtesy of NISSAN MOTOR CO., U.S.A.
4. Reinstall any part removed.

OK or NG

1. OK (without CONSULT-II): GO TO  8.
2. NG: GO TO 7.
   Fig 5: Terminal Cord Assembly F30 Terminals 6 & 7 Continuity Test

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

1. Remove oil pan.
2. Check the following items:
   • A/T fluid temperature sensor
     • Check resistance between two terminals while changing temperature as shown.
       Fig 6: Temperature & Resistance Specification Table

       Courtesy of NISSAN MOTOR CO., U.S.A.
   • Harness of terminal cord assembly for short or open

OK or NG

1. OK (without CONSULT-II): GO TO 8.
2. NG: Repair or replace damaged parts.
   Fig 7: Checking Resistance Between Two Terminals While Changing Temperature

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

Without CONSULT-II 

1. Start engine.
2. Check voltage between TCM harness connector terminal 47 and ground while warming up A/T.
   Fig 8: Temperature & Voltage Specification Chart

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. Turn ignition switch to OFF position.
4. Disconnect TCM harness connector.
5. Check resistance between terminal 42 and ground. Refer to "WIRING DIAGRAM - AT - BA/FTS ".

   Continuity should exist. 

OK or NG

1. OK: GO TO  10.
2. NG: GO TO 9.
   Fig 9: TCM Harness Connector Terminal 47 & Ground While Warming Up A/T Voltage Test

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

Check the following items:

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

  Refer to "POWER SUPPLY ROUTING CIRCUIT " (with QR25DE), or "POWER SUPPLY ROUTING CIRCUIT " (with VQ35DE).

OK or NG

1. OK: GO TO 10.
2. NG: Repair or replace damaged parts.

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

OK or NG

1. OK: INSPECTION END 
2. NG: GO TO 11.

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.