DTC Logic
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition | Possible cause |
P0078 | EX V/T ACT/CIRC-B1 (Exhaust valve control solenoid circuit bank 1) | An improper voltage is sent to the ECM through exhaust valve timing control solenoid valve. |
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DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
>> GO TO2.
2.PERFORM DTC CONFIRMATION PROCEDURE
Is 1st trip DTC detected? YES >> Proceed to EC-183, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1.CHECK EXHAUST VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY
Is the inspection result normal? YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK EXHAUST VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit.
NO >> Repair or replace error-detected parts.
3.CHECK EXHAUST VALVE TIMING CONTROL SOLENOID VALVE GROUND CIRCUIT
Is the inspection result normal? YES >> GO TO 4.
NO >> Repair or replace error-detected parts.
4.CHECK EXHAUST VALVE TIMING CONTROL SOLENOID VALVE
Check the exhaust valve timing control solenoid valve. Refer to EC-181, "Component Inspection (IVT Control Solenoid Valve)".
Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".
NO >> Replace exhaust valve timing control solenoid valve. Refer to EM-49, "Removal and Installation".
Component Inspection (EVT Control Solenoid Valve)
1.CHECK EXHAUST VALVE TIMING CONTROL SOLENOID VALVE-1
Is the inspection result normal? YES >> GO TO 2.
NO >> Replace exhaust valve timing control solenoid valve. Refer to EM-49, "Removal and Installation".
2.CHECK EXHAUST VALVE TIMING CONTROL SOLENOID VALVE-2
CAUTION:
Do not apply 12 V DC continuously for 5 seconds or more.
Doing so may result in damage to the coil in exhaust valve timing control solenoid valve.
NOTE:
Always replace O-ring when exhaust valve timing control solenoid valve is removed.
Is the inspection result normal? YES >> INSPECTION END
NO >> Replace exhaust valve timing control solenoid valve. Refer to EM-49, "Removal and Installation".
Precaution
Precautions for Trouble Diagnosis
Caution:
Follow the instructions listed below. Failure to do this may cause
damage to parts:
Never apply 7.0 V or more to the measurement terminal.
Use a tester with open terminal voltage of 7.0 V or less.
Turn the ignition switch off and disconnect the ...
Wiring diagram
Ipdm e/r (intelligent power distribution module engine room)
Wiring diagram
...
Clutch pedal
Exploded View
Clutch pedal
Stopper rubber
Clip
Clutch interlock switch (if equipped)
Clutch pedal position switch (if equipped)
Pedal pad
Pedal stopper rubber
Removal and Installation
REMOVAL
Remove instrument lower panel LH. Refer to IP-21, "Removal and
Installa ...