1. Check for continuity between ECM connector No. 1 terminal No. 78 and body ground.

Is there continuity?

YES | - | Go to Step 27 .
NO | - | Repair open in the wire between the turbocharger boost control solenoid valve and ECM connector No. 1 terminal No. 78, then go to Step 22 .

1. Turn the ignition switch OFF.

1. Replace the turbocharger boost control solenoid valve.

1. Reconnect all connectors.

1. Turn the ignition switch ON (II).

1. Reset the ECM with the HDS.

1. Start the engine, and hold the engine speed at 2,000 rpm (min −1 ) without load.

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

Are any Temporary DTCs or DTCs indicated?

YES | - | If DTC P0045 is indicated, check for poor connections or loose terminals at the turbocharger boost control solenoid valve and the ECM, then go to Step 1 . If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
NO | - | Troubleshooting is complete.■

1. Update the ECM if it does not have the latest software, or substitute a known-good ECM.

1. Start the engine, and hold the engine speed at 2,000 rpm (min −1 ) without load.

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

Are any Temporary DTCs or DTCs indicated?

YES | - | If DTC P0045 is indicated, check for poor connections or loose terminals at the turbocharger boost control solenoid valve and the ECM, then go to Step 1 . If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
NO | - | If the ECM was updated, troubleshooting is complete. If the ECM was substituted, replace the original ECM. ■