Diagnostic Procedure

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

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

Yes: Check CAN communication line. Refer to "DTC U1000 CAN COMMUNICATION LINE ".

No: GO TO 2.

With CONSULT-II 

1. Turn ignition switch ON.
2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "A/T" with CONSULT-II.
Fig 1: Identifying CONSULT-II Display - DATA MONITOR
Courtesy of NISSAN MOTOR CO., U.S.A.
3. Depress accelerator pedal and read out the value of "ACCELE POSI".
   ACCELE POSI
   
   

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

4. Select "SELF-DIAG RESULTS" mode for "A/T" with CONSULT-II. Refer to "SELF-DIAGNOSTIC RESULT MODE ".

OK or NG 

OK: GO TO  4.

NG: GO TO 3.

With CONSULT-II 

1. Turn ignition switch ON.
2. Select "SELF-DIAG RESULTS" mode for "ENGINE" with CONSULT-II. Refer to "CONSULT-II FUNCTION (ENGINE) " (for VQ35DE) or "CONSULT-II FUNCTION (ENGINE) " (for VK45DE).
   Fig 2: Identifying CONSULT-II Display - SELECT SYSTEM

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

OK or NG 

OK: GO TO 4.

NG: Check the DTC detected item. Refer to "CONSULT-II FUNCTION (ENGINE) " (for VQ35DE) or "CONSULT-II FUNCTION (ENGINE) " (for VK45DE).

• If CAN communication line is detected, go to "DTC U1000 CAN COMMUNICATION LINE ".

Perform "DTC CONFIRMATION PROCEDURE ".

OK or NG 

OK: INSPECTION END 

NG: GO TO 5.

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

OK or NG 

OK: GO TO 6.

NG: Repair or replace damaged parts.

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

OK or NG 

OK: Replace the control valve with TCM. Refer to "CONTROL VALVE WITH TCM AND A/T FLUID TEMPERATURE SENSOR 2 ".

NG: Repair or replace damaged parts.