P0776

P0776 PRESSURE CONTROL SOLENOID B PERFORMANCE (SEC PRESSURE SOLENOID VALVE)





Description
The pressure control solenoid valve B (secondary pressure solenoid valve) regulates the secondary 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:
Immediately after performing any "DTC CONFIRMATION PROCEDURE", always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1. CHECK DTC DETECTION
With CONSULT-III
1. Turn ignition switch ON.
2. Select "Data Monitor" in "TRANSMISSION".
3. Start engine and maintain the following conditions for at least 30 consecutive seconds.

ATF TEMP SEN : 1.0 2.0 V
ACC PEDAL OPEN : More than 1.0/8
RANGE : "D" position
VEHICLE SPEED : 10 km/h (6 MPH) or more
Driving location : Driving the vehicle uphill (increased engine load) will help maintain the driving conditions required for this test.


With GST
Follow the procedure "With CONSULT-III".
Is "P0776 PRS CNT SOL/B FCTN" detected?
YES - Go to "Diagnosis Procedure".
NO - Check intermittent incident. Refer to Intermittent Incident.




Diagnosis Procedure
1. CHECK LINE PRESSURE
Perform line pressure test. Refer to Component Tests and General Diagnostics.
Is the inspection result normal?
YES - GO TO 2.
NO - Repair or replace damaged parts. Refer to Component Tests and General Diagnostics.
2. CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
1. Turn ignition switch OFF.
2. Disconnect CVT unit connector.
3. Check pressure control solenoid valve B (secondary pressure solenoid valve). Refer to "Component Inspection [Pressure Control Solenoid Valve B (Line Pressure Solenoid Valve)]".
Is the inspection result normal?
YES - GO TO 3.
NO - Replace transaxle assembly. Refer to Exploded View.
3. CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check pressure control solenoid valve A (line pressure solenoid valve). Refer to "Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)]".
Is the inspection result normal?
YES - GO TO 4.
NO - Replace transaxle assembly. Refer to Exploded View.
4. CHECK TRANSMISSION FLUID PRESSURE SENSOR A (SECONDARY PRESSURE SENSOR) SYSTEM
Check transmission fluid pressure sensor A (secondary pressure sensor) system. Refer to P0840.
Is the inspection result normal?
YES - GO TO 5.
NO - Repair or replace damaged parts.
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 Exploded View.
NO - Repair or replace damaged parts.




Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)]
1. CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)





Check resistance between CVT unit connector terminal and ground.





Is the inspection result normal?
YES - INSPECTION END
NO - Replace transaxle assembly. Refer to Exploded View.




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 connector terminal and ground.





Is the inspection result normal?
YES - INSPECTION END
NO - Replace transaxle assembly. Refer to Exploded View.