DTC P0660
Precautions: General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
P0660: Intake Manifold Tuning Valve Control Circuit / Open IMT valve actuator and/or its circuit malfunction (open, short to power supply or short to ground) is detected. (3 D/C detection logic but MIL does not light up) |
•IMT valve actuator and/or its circuit
•ECM |
Circuit Diagram
| [A]: | ECM connector (View: [a]) | A2: | IMT valve actuator drive circuit (open) | 2. | ECM |
| A1: | IMT valve actuator drive circuit (close) | 1. | IMT valve actuator |
DTC Confirmation Procedure
NOTE:
Check that the following condition is met in this “DTC Confirmation Procedure”.
•Battery voltage > 8.5 V
1)Start engine at idle speed for 10 sec.
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “Engine and Emission Control System Check” performed?
|
Go to Step 2.
|
|
| 2 |
IMT valve actuator drive circuit check
1)With ignition “OFF”, disconnect “C01” and “E01” connectors of ECM and IMT valve actuator connector.
2)Check for proper terminal connection to “C01” and “E01” connectors and IMT valve actuator connector.
3)If connections are OK, check the following points.
•Resistance of “A1” and “A2” circuits: less than 1 Ω
•Resistance between each of “A1” and “A2” circuits and ground: infinity •Resistance between “A1” circuit terminal and “A2” circuit terminal at IMT valve actuator connector: infinity •Voltage of “A1” and “A2” circuits: approx. 0 V (When ignition is “ON”) Is check result OK?
|
Go to Step 3.
|
Repair or replace defective wire harness.
|
| 3 |
IMT valve actuator check
1)Check IMT valve actuator.
Is check result OK?
|
Replace ECM and recheck DTC.
|
Replace IMT valve actuator.
|