Affected terminals: E2, E3, E4, E6
Possible trouble codes: 17
Engine running at idle speed
Engine throttle valve CLOSED (accelerator pedal in idle
position)
Vehicle stationary
Press key F8 in the system main menu, select the desired test
using the arrow keys and confirm with YES. Follow the instructions in the
TECH 1 display.
Note:
The injector switchoff control test can be used to make an
indirect statement about the mechanical condition of a cylinder
(compression). When the fuel injection of a cylinder is switched off
completely, the engine has to move that piston against the compression force
as well. The torque and output are reduced and the engine speed decreases.
The engine speed should decrease by the same amount for each
cylinder cutoff, i.e. the compression and friction work should be about the
same for each individual cylinder that is switched off consecutively.
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