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.

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.