106 Maintenance Bleeding the D12D Engine Note: Prior to bleeding the engine, make sure the key is in the ignition in the “ON” mode (engine is stopped) and the parking brakes are applied. Once the 4 minute bleeding process is complete, you can start the engine. To bleed the D12D engine simply press or push the fuel priming activation switch located on the right hand side of the steering column, in the dash. This is a non-locking switch, which when pressed, sends a signal to the Vehicle ECU (VECU). The VECU then transmits the request via a control data link to the EECU. The EECU activates the pump for approximately 4 minutes.
W3005378 If you have problems starting the engine, restart the bleeding procedure and try restarting the engine again after bleeding is complete. If the engine does not start following this procedure contact your local Volvo Truck dealer.