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TM-140 < DTC/CIRCUIT DIAGNOSIS > [CVT: RE0F10D] P0778 PRESSURE CONTROL SOLENOID B P0778 PRESSURE CONTROL SOLENOID B DTC Description INFOID:0000000011279359 DTC DETECTION LOGIC POSSIBLE CAUSE • Harness or connector (Secondary pressure solenoid valve circuit is shorted to ground) • Secondary pressure solenoid valve FAIL-SAFE • Selector shock is large • Start is slow • Acceleration is slow • Lock-up is not performed 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. YES >> Go to NO-1 >> To check malfunction symptom before repair: Refer to GI-44, "Intermittent Incident" . NO-2 >> Confirmation after repair: INSPECTION END Diagnosis Procedure INFOID:0000000011279360 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. DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition P0778 PC SOLENOID B When all of the following conditions are satisfied and this state is maintained TCM — Continuity Connector Terminal F75 39 Ground Not existed |