Diagnosis Procedure
- CHECK EXHAUST VALVE TIMING CONTROL MAGNET RETARDER POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect exhaust valve timing control magnet retarder harness connector.
- Turn ignition switch ON.
- Check the voltage between exhaust valve timing (EVT) control magnet retarder harness connector and ground.
VOLTAGE SPECIFICATIONDTC EVT control magnet retarder Ground Voltage Bank Connector Terminal P0078 1 F32 1 Ground Battery voltage P0084 2 F41 1 Is the inspection result normal?
YES: GO TO 3.
NO: GO TO 2.
- DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E3, F1
- Harness for open or short between exhaust valve timing control magnet retarder and IPDM E/R
Repair open circuit or short to ground or short to power in harness or connectors.
- CHECK EXHAUST VALVE TIMING CONTROL MAGNET RETARDER OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between exhaust valve timing control (EVT) magnet retarder harness connector and ECM harness connector.CONTINUITY SPECIFICATION
DTC EVT control magnet retarder ECM Continuity Bank Connector Terminal Connector Terminal P0078 1 F32 2 F101 6 Existed P0084 2 F41 2 7 - Also check harness for short to ground and short to power.
Is the inspection result normal?
YES: GO TO 4.
NO: Repair open circuit or short to ground or short to power in harness or connectors.
- CHECK EXHAUST VALVE TIMING CONTROL MAGNET RETARDER
Refer to "COMPONENT INSPECTION ".
Is the inspection result normal?
YES: GO TO 6.
NO: GO TO 5.
- REPLACE EXHAUST VALVE TIMING CONTROL MAGNET RETARDER
- Replace malfunctioning exhaust valve timing control magnet retarder.
- Perform "EXHAUST VALVE TIMING CONTROL LEARNING : SPECIAL REPAIR REQUIREMENT ".
INSPECTION END
- CHECK INTERMITTENT INCIDENT
Refer to "INTERMITTENT INCIDENT ".
INSPECTION END