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DTC Description
 
 
DTC DETECTION LOGIC
DTCM.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detection condition
P077800PC SOLENOID B
(Pressure Control Solenoid “B” Electrical)
Diagnosis conditionTCM power supply voltage: More than 11 V
Signal—
ThresholdTCM judges that solenoid valve circuit is shorted to ground
Diagnosis delay time1 seconds
 
 
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
cautionAlways drive vehicle at a safe speed.
1.PREPARATION BEFORE WORK
If another “DTC CONFIRMATION PROCEDURE” occurs just before, the ignition switch is OFF and wait for at least 10 seconds, then perform the next test.
: .
 
2.CHECK DTC DETECTION
  1. Start the engine and wait for 5 seconds or more.
  2. Check the first trip DTC.
Is “P0778–00” detected?
Go to Diagnosis ProcedureDTC Diagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END