Diagnostic Procedure

Perform the self-diagnosis. Refer to "SELF-DIAGNOSTIC RESULT MODE ".

Is any malfunction of the "CAN COMM CIRCUIT" indicated?

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

WITH CONSULT-II 

1. Start engine.
2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-II.
3. Start vehicle and read out the value of "SEC HYDR SEN" and "PRI HYDR SEN".
   Fig 1: Monitor Item Condition Chart

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 2: ECU INPUT SIGNALS - Consult II Display

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

Without CONSULT-II 

1. Start engine.
2. Check voltage between TCM connector terminal and ground.
   Fig 3: Terminals Voltage Reference Chart

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 4: Checking Voltage Between TCM Connector Terminal And Ground

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

OK or NG 

1. OK: GO TO  6.
2. NG: GO TO 3.

Perform line pressure test. Refer to "LINE PRESSURE TEST ".

OK or NG 

1. OK: GO TO 4.
2. NG: Repair or replace damaged parts. Refer to "JUDGEMENT OF LINE PRESSURE TEST ".

Check secondary pressure sensor system and primary pressure sensor system. Refer to "DTC P0840 TRANSMISSION FLUID PRESSURE SENSOR A CIRCUIT (SEC PRESSURE SENSOR) ", "DTC P0845 TRANSMISSION FLUID PRESSURE SENSOR B CIRCUIT (PRI PRESSURE SENSOR) ".

OK or NG 

1. OK: GO TO 5.
2. NG: Repair or replace damaged parts.

Check the following:

• Line pressure solenoid valve. Refer to "COMPONENT INSPECTION ".
• Secondary pressure solenoid valve. Refer to "COMPONENT INSPECTION ".
• Step motor. Refer to "COMPONENT INSPECTION ".

OK or NG6 

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

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

OK or NG 

1. OK: INSPECTION END 
2. NG: Replace TCM or transaxle assembly. Refer to "REMOVAL AND INSTALLATION ".