Your Vehicle: 2009 Nissan-Datsun Altima V6-3.5L (VQ35DE)
 
Vehicle » A L L Diagnostic Trouble Codes ( DTC ) » Testing and Inspection » P Code Charts » P0778 » CVT RE0F10A  
 
 
  CVT RE0F10A  
 

P0778 PRESSURE CONTROL SOLENOID B ELECTRICAL (SEC PRESSURE SOLENOID VALVE)

Description
The pressure control solenoid valve B (secondary pressure solenoid valve) regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the TCM.

DTC Logic

DTC DETECTION LOGIC

  

DTC CONFIRMATION PROCEDURE

CAUTION:
Always drive vehicle at a safe speed.

NOTE:
If "DTC CONFIRMATION PROCEDURE" has been previously performed, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.CHECK DTC DETECTION
With CONSULT-III

  1. Start engine.
  2. Drive vehicle and maintain the following conditions for at least 5 consecutive seconds.
  3. Perform "SELF-DIAG RESULTS" mode for "TRANSMISSION". With GST

Follow the procedure "With CONSULT-III".
Is "P0778 PRS CNT SOL/B CIRC" detected?
YES >> Go to Diagnosis Procedure.
NO >> Check intermittent incident. Refer to See: Testing and Inspection\Initial Inspection and Diagnostic Overview\Service Information For Electrical Incident\Intermittent Incident.

Diagnosis Procedure
1.CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
CIRCUIT

  

  1. Turn ignition switch OFF.
  2. Disconnect TCM harness connector.
  3. Check resistance between TCM harness connector F16 terminal 39 and ground.

  

Is the Inspection result normal?
YES >> GO TO 5.
NO >> GO TO 2.
2.CHECK HARNESS BETWEEN TCM AND CVT UNIT [PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)] (PART 1)

  

  1. Disconnect CVT unit harness connector.
  2. Check continuity between TCM harness connector F16 (A) terminal 39 and CVT unit harness connector F46 (B) terminal 3.

  

Is the Inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts.
3.CHECK HARNESS BETWEEN TCM AND CVT UNIT [PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)] (PART 2)

  

Check continuity between TCM harness connector F16 terminal 39 and ground.

  

Is the Inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace damaged parts.
4.CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check pressure control solenoid valve B (secondary pressure solenoid valve). Refer to Component Inspection [Pressure Control Solenoid Valve B (Secondary Pressure Solenoid Valve)].
Is the Inspection result normal?
YES >> GO TO 5.
NO >> Replace transaxle assembly. Refer to See: Transmission and Drivetrain\Continuously Variable Transmission/Transaxle\Service and Repair\CVT RE0F10A\Transaxle Assembly\Exploded View.
5.DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the Inspection result normal?
YES >> Replace TCM. Refer to See: Powertrain Management\Transmission Control Systems\Control Module, CVT\Service and Repair\CVT RE0F10A\Exploded View.
NO >> Repair or replace damaged parts.

Component Inspection [Pressure Control Solenoid Valve B (Secondary Pressure Solenoid Valve)]
1.CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)

  

Check resistance between CVT unit terminal 3 and ground.

  

Is the Inspection result normal?
YES >> Inspection END
NO >> Replace transaxle assembly. Refer to See: Transmission and Drivetrain\Continuously Variable Transmission/Transaxle\Service and Repair\CVT RE0F10A\Transaxle Assembly\Exploded View.