Diagnostic Procedure

With CONSULT-III 

1. Start engine.
2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-III.
3. Start vehicle and read out the value of "SEC HYDR SEN".
   SEC HYDR SEN DISPLAY VALUE
   
   

   Item name	Condition	Display value (Approx.)
   SEC HYDR SEN	"N" position idle	0.8 - 1.0 V

Without CONSULT-III 

1. Start engine.
2. Check voltage between TCM connector terminal and ground.
   VOLTAGE REFERENCE CHART
   
   

   Name	Connector	Terminal	Condition	Voltage (Approx.)
   Transmission fluid pressure sensor A (Secondary pressure sensor)	F57	37 - Ground	"N" position idle	1.0 V

   Fig 1: Checking Voltage Between TCM Connector Terminal And Ground

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

OK or NG 

OK: GO TO  5.

NG: GO TO  2.

1. Turn ignition switch ON. (Do not start engine)
2. Check voltage between TCM connector terminals.
   SENSOR POWER AND SENSOR GROUND
   
   

   Item	Connector	Terminal	Data (Approx.)
   TCM connector	F57	46 - 42	5.0 V

   Fig 2: Checking Voltage Between TCM Connector Terminals

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

   OK or NG 

   OK: GO TO  4.

   NG: GO TO  3.

3. CHECK HARNESS BETWEEN TCM AND CVT UNIT HARNESS CONNECTOR (SENSOR POWER AND SENSOR GROUND) 
   1. Turn ignition switch OFF.
   2. Disconnect TCM connector and CVT unit harness connector.
   3. Check continuity between TCM connector terminals and CVT unit harness connector terminals.
      CONTINUITY REFERENCE
      
      

      Item	Connector	Terminal	Continuity
      TCM	F57	42	Yes
      CVT unit harness connector	F30	19
      TCM	F57	46	Yes
      CVT unit harness connector	F30	20

      Fig 3: Checking Harness Between TCM And CVT Unit Harness Connector (Sensor Power And Sensor Ground)

      Courtesy of NISSAN MOTOR CO., U.S.A.
   4. If OK, check harness for short to ground and short to power.
   5. Reinstall any part removed.

   OK or NG 

   OK: Replace TCM. Refer to "PRECAUTIONS FOR TCM AND CVT ASSEMBLY REPLACEMENT ".

   NG: Repair open circuit or short to ground or short to power in harness or connectors.

4. CHECK HARNESS BETWEEN TCM AND TRANSMISSION FLUID PRESSURE SENSOR A (SECONDARY PRESSURE SENSOR) 
   1. Turn ignition switch OFF.
   2. Disconnect TCM connector and CVT unit harness connector.
   3. Check continuity between TCM connector terminal and CVT unit harness connector terminal.
      TCM AND TRANSMISSION FLUID PRESSURE SENSOR A (SECONDARY PRESSURE SENSOR)
      
      

      Item	Connector	Terminal	Continuity
      TCM	F57	37	Yes
      CVT unit harness connector	F30	23

   4. If OK, check harness for short to ground and short to power.
   5. Reinstall any part removed.

   OK or NG 

   OK: GO TO  5.

   NG: Repair open circuit or short to ground or short to power in harness or connectors.

   Fig 4: Checking Harness Between TCM And Transmission Fluid Pressure Sensor (Secondary Pressure Sensor)

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

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

   OK or NG 

   OK: INSPECTION END 

   NG: GO TO  6.

6. CHECK TCM 
   1. Check TCM input/output signals. Refer to "TCM INPUT/OUTPUT SIGNAL REFERENCE VALUES ".
   2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector.

   OK or NG 

   OK: Replace the transaxle assembly. Refer to "REMOVAL AND INSTALLATION ".

   NG: Repair or replace damaged parts.