Diagnostic Procedure

With CONSULT-II 

1. Star 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)] rightarrow Hot [80°C (176°F)] 
   2. : Approximately 1.5V rightarrow 0.5V 

OK or NG 

1. OK: GO TO  9.
2. NG: GO TO 2.

Check the following items:

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

  Refer to GROUND DISTRIBUTION and POWER DISTRIBUTION .

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 terminals 10, 19, 28 and ground.

Fig 2: Checking Voltage Between TCM Terminals 10, 19, 28 And Ground

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

OK or NG 

1. OK: GO TO 4.
2. NG: GO TO  5.

1. Turn ignition switch to OFF position.
2. Check voltage between TCM terminal 28 and ground.

Fig 3: Checking Voltage Between TCM Terminal 28 And Ground

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

OK or NG 

1. OK: GO TO  6.
2. NG: GO TO 5.

Check the following items:

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

  Refer to POWER DISTRIBUTION .

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: 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 (without CONSULT-II): GO TO  8.
2. NG: GO TO 7.

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 5: Temperature Resistance Chart

  Courtesy of NISSAN MOTOR CO., U.S.A.
  Fig 6: 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 (without CONSULT-II): GO TO 8.
2. NG: Repair or replace damaged parts.

Without CONSULT-II 

1. Start engine.
2. Check voltage between TCM terminal 47 and ground while warming up A/T.
   1. Voltage: Cold [20°C (68°F)] rightarrow Hot [80°C (176°F)] 
   2. : Approximately 1.5V rightarrow 0.5V 
3. Turn ignition switch to OFF position.
4. Disconnect TCM harness connector.
5. Check resistance between TCM harness connector terminal 42 and ground. Refer to "WIRING DIAGRAM - AT - BA/FTS"
   Fig 7: Checking Voltage Between TCM Terminal 47 And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.
   1. Continuity should exist. 

OK or NG 

1. OK: GO TO  10.
2. NG: GO TO 9.

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 DISTRIBUTION .

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.