DTC Diagnosis Procedure
WARNING: This page is about a different variant/trim than selected.
- CHECK EXHAUST VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect exhaust valve timing (EVT) control solenoid valve harness connector.
- Turn ignition switch ON.
- Check the voltage between EVT control solenoid valve harness connector and ground.
DTC
EVT control solenoid valve
Ground
Voltage
Bank
Connector
Terminal
P0078
1
F80
2
Ground
Battery voltage
P0084
2
F81
2
Is the inspection result normal?
YES
GO TO 3.
NO
GO TO 2.
- DETECT MALFUNCTIONING PART
Check the following.
- Harness for open or short between EVT control solenoid valve and IPDM E/R
- Loose or poor connection for each connector and harness
Repair open circuit, short to ground or short to power in harness or connectors.
- CHECK EVT CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between EVT control solenoid valve harness connector and ECM harness connector.
DTC
EVT control solenoid valve
ECM
Continuity
Bank
Connector
Terminal
Connector
Terminal
P0078
1
F80
1
F79
114
Existed
P0084
2
F81
1
115
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
GO TO 4.
NO
Repair open circuit, short to ground or short to power in harness or connectors.
- CHECK EVT CONTROL SOLENOID VALVE
Refer to Component Inspection (Echaust Valve Timing Control Solenoid Valve) .
Is the inspection result normal?
YES
INSPECTION END
NO
Replace malfunctioning EVT control solenoid valve. Refer to Exploded View .