Diagnostic Procedure

Inspection Start
Do you have CONSULT-II?
1. OK or NG
OK: GO TO 2.

NG: GO TO 9.
Check Input Signal Of A/T Fluid Temperature Sensor (With CONSULT-II)
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: Display Data Monitor Mode For A/T With Consult-II
  Courtesy of NISSAN MOTOR CO., U.S.A.
1. OK or NG
OK: GO TO 10.

NG: GO TO 3.
Detect Malfunctioning Item
Check the following items:
- Harness for short or open between TCM, ECM and terminal cord assembly
- Ground circuit for ECM
Refer to TROUBLE DIAGNOSIS FOR POWER SUPPLY .
1. OK or NG
OK: GO TO 4.

NG: Repair or replace damaged parts.
Check TCM Power Source Step 1
1. Turn ignition switch to ON position.
  (Do not start engine.)
2. Check voltage between TCM harness connectors F50, F51 terminals 10 (R/Y), 19 (R/Y), 28 (Y/R) and ground.
  
  Fig 2: Checking TCM Power Source Step 1
  Courtesy of NISSAN MOTOR CO., U.S.A.
1. OK or NG
OK: GO TO 5.

NG: GO TO 6.
Check TCM Power Source Step 2
1. Turn ignition switch to OFF position.
2. Check voltage between TCM harness connector F50 terminal 28 (Y/R) and ground.
  
  Fig 3: Checking TCM Harness Connector Voltage
  Courtesy of NISSAN MOTOR CO., U.S.A.
1. OK or NG
OK: GO TO 7.

NG: GO TO 6.
Detect Malfunctioning Item
Check the following items:
- Harness for short or open between battery, ignition switch and TCM
- Ignition switch and fuse
  Refer to POWER DISTRIBUTION .
1. OK or NG
OK: GO TO 7.

NG: Repair or replace damaged parts.
Check With Terminal Cord Assembly
1. Turn ignition switch to OFF position.
2. Disconnect terminal cord assembly connector in engine compartment.
3. Check resistance between terminals 6 (G) and 7 (B) when A/T is cold.
  
  Fig 4: Checking A/T Fluid Temperature Sensor Terminal Resistance
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. Reinstall any part removed.
1. OK or NG
OK GO TO 10.

NG: GO TO 8.
Detect Malfunctioning Item
1. Remove oil pan. Refer to REMOVAL .
2. Check the following items:
  - A/T fluid temperature sensor
    1. Check resistance between two terminals while changing temperature as shown below.
      
      Fig 5: Checking Resistance Between Two Terminals While Changing Temperature
      Courtesy of NISSAN MOTOR CO., U.S.A.
      
      Fig 6: Checking Resistance Between Two Terminals While Changing Temperature
      Courtesy of NISSAN MOTOR CO., U.S.A.
  - Harness of terminal harness assembly for short or open
1. OK or NG
OK: GO TO 10.

NG: Repair or replace damaged parts.
Check Input Signal Of A/T Fluid Temperature Sensor (Without Consult-II)
Without CONSULT-II
1. Start engine.
2. Check voltage between TCM harness connector F50 terminal 47 (G) and ground while warming up A/T.
  
  Fig 7: Checking TCM Harness Connector Voltage
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Turn ignition switch to OFF position.
4. Disconnect TCM harness connector.
5. Check resistance between TCM harness connector F50 terminal 42 (B) and ground. Refer to WIRING DIAGRAM - AT - BA/FTS .
  1. Continuity should exist.
1. OK or NG
OK: GO TO 10.

NG: GO TO 3.
Check DTC
Perform DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE .
1. OK or NG
OK: Inspection End

NG: GO TO 11.
Check TCM Inspection
1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
1. OK or NG
OK: Inspection End

NG: Repair or replace damaged parts.