DTC P0490: EGR valve Circuit Shorted to Power

1. Turn the ignition switch ON (II).

1. Clear the DTC with the HDS.

1. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0490 indicated?

YES | - | Go to Step 4 .
NO | - | Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the EGR valve and the ECM.■

1. Turn the ignition switch OFF, and wait 30 seconds.

1. Disconnect the EGR valve 6P connector.

1. At valve side, measure resistance between EGR valve 6P connector terminals No. 4 and No. 6.

Is there about 7 Ω at room temperature?

YES | - | Go to Step 7 .
NO | - | Go to Step 10 .

1. Disconnect ECM connector No. 1 (96P).

1. Turn the ignition switch ON (II).