When the throttle is closed, while the engine is running at cruise rpm (tip-out), the turbocharger boost pressure raises rapidly. The pressure wave strikes a compressor blades causing a knocking noise. To prevent this the ECM opens the recirculation valve which allows excessive boost pressure to vent back to the air cleaner side of the turbocharger compressor.
Daytime running light
Daytime Running Lights (DRL) can make it easier for others to see the front of
your vehicle during the day. DRL can be helpful in many different driving conditions,
and it is especially helpful af ...
Inspection
1.
The rear glass defogger switch
inputs can be checked using the GDS.
2.
To check the input value of rear
glass defogger switch, select option "Body Control Mod ...
Trip computer
The trip computer is a microcomputercontrolled driver information system that
displays information related to driving on the display when the ignition switch
is in the ON position. All stored dr ...