Diagnostic Procedure

1. CHECK CAN COMMUNICATION LINE 

   Perform self-diagnosis. Refer to "SELF-DIAGNOSTIC RESULT MODE ", "DIAGNOSTIC PROCEDURE WITHOUT CONSULT-II ".

   Is a malfunction in the CAN communication indicated in the results?

   1. YES: Check CAN communication line. Refer to "DTC U1000 CAN COMMUNICATION LINE ".
   2. NO: GO TO 2.
2. CHECK DTC WITH TCM 

   With CONSULT-II 

   1. Turn ignition switch ON. (Do not start engine.)
   2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "A/T" with CONSULT-II.
   3. Depress accelerator pedal and read out the value of "ACCELE POSI".
      CONSULT-II FUNCTION REFERENCE
      
      

      Item name	Condition	Display value (Approx.)
      ACCELE POSI	Released accelerator pedal.	0.0/8
      	Fully depressed accelerator pedal.	8.0/8

      Fig 1: CONSULT II Display - Data Monitor

      Courtesy of NISSAN MOTOR CO., U.S.A.
   4. Select "SELF-DIAG RESULTS" mode for "A/T" with CONSULT-II. Refer to "SELF-DIAGNOSTIC RESULT MODE "

   OK or NG 

   1. OK: GO TO  4.
   2. NG: GO TO 3.
3. CHECK DTC WITH ECM 

   With CONSULT-II 

   1. Turn ignition switch ON. (Do not start engine.)
   2. Select "SELF-DIAG RESULTS" mode for "ENGINE" with CONSULT-II. Refer to "CONSULT-II FUNCTION (ENGINE) ".

   OK or NG 

   1. OK: GO TO 4.
   2. NG: Check the DTC detected item. Refer to "CONSULT-II FUNCTION (ENGINE) ".
   • If CAN communication line is detected, go to "DTC U1000 CAN COMMUNICATION LINE ".
     Fig 2: Consult-II SELECT SYSTEM Display Screen

     Courtesy of NISSAN MOTOR CO., U.S.A.
4. CHECK DTC 

   Perform "DTC Confirmation Procedure". Refer to "DTC CONFIRMATION PROCEDURE ".

   OK or NG 

   1. OK: INSPECTION END 
   2. NG: GO TO 5.
5. CHECK TCM POWER SUPPLY AND GROUND CIRCUIT 

   Check TCM power supply and ground circuit. Refer to "MAIN POWER SUPPLY AND GROUND CIRCUIT ".

   OK or NG 

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

Check the following.

• A/T assembly harness connector pin terminals for damage or loose connection with harness connector.

OK or NG 

1. OK: Replace control valve with TCM. Refer to "CONTROL VALVE WITH TCM AND A/T FLUID TEMPERATURE SENSOR 2 ".
2. NG: Repair or replace damaged parts.