CVT RE0F10E

P0778 PRESSURE CONTROL SOLENOID B

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


CAUTION:
Always drive vehicle at a safe speed.

1. PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, turn ignition switch OFF and wait for at least 10 seconds, then perform the next test.
- GO TO 2.

2. CHECK DTC DETECTION

1.Start the engine and wait for 5 seconds or more.
2.Check the first trip DTC.
Is "P0778" detected?
YES- Go to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK CIRCUIT BETWEEN TCM AND CVT UNIT

1.Turn ignition switch OFF.
2.Disconnect TCM connector and CVT unit connector.
3.Check continuity between TCM harness connector terminal and ground.





Is the inspection result normal?
YES - GO TO 2.
NO- Repair or replace damaged parts.

2. CHECK CIRCUIT BETWEEN CVT UNIT AND GROUND

Check continuity between CVT unit harness connector terminal and ground.





Is the inspection result normal?
YES - Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- GO TO 3.

3. CHECK CIRCUIT BETWEEN CVT UNIT AND CONTROL VALVE

1.Disconnect control valve connector. Refer to "Removal and Installation" Removal And Installation.
2.Check continuity between CVT unit harness connector terminal and control valve harness connector terminal.





Is the inspection result normal?
YES - GO TO 4.
NO- Replace terminal cord assembly. Refer to "Removal and Installation" Removal And Installation.

4. CHECK CIRCUIT BETWEEN CONTROL VALVE AND GROUND

Check continuity between CVT unit harness connector terminal and ground.





Is the inspection result normal?
YES - Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- There is malfunction of secondary pressure solenoid valve. Replace transaxle assembly. Refer to
"Removal and Installation" Removal And Installation.