P0660
DTC P0660
DTC Detecting Condition and Trouble Area
Wiring Diagram
DTC Confirmation Procedure
1) Turn ignition switch to ON position for 10 sec.
DTC Troubleshooting
1.
Was "Engine and Emission Control System Check" performed?
YES -
Go to Step 2.
NO -
Go to Engine and Emission Control System Check Engine and Emission Control System Check.
2. IMT valve actuator drive circuit check
Disconnect connectors from IMT valve actuator and ECM with ignition switch turned OFF.
Check for proper terminal connection to IMT valve actuator and ECM connectors.
If connection are OK, check that IMT valve circuit is as follows.
- Wiring harness resistance of IMT valve actuator drive circuit is less than 3 ohms.
- Insulation resistance of IMT valve actuator drive circuit is infinity between IMT valve actuator connector and vehicle body ground.
- Insulation resistance of wire harness is infinity between IMT valve actuator drive terminal and each other terminal at IMT valve connector.
Are they in good condition?
YES -
Go to Step 3.
NO -
Repair or replace IMT valve actuator drive circuit.
3. IMT valve actuator check
Check IMT valve actuator. IMT Valve Actuator Inspection
Is it in good condition?
YES -
Substitute a known-good ECM and recheck.
NO -
Replace IMT valve actuator.