Effects Of Failure; Electrical Circuit - Volkswagen 1.9-Liter TDI Owner's Manual

Engine Management
N240 N241
44
J248
N242 N243
SSP209/065

Effects of failure

If a pump/injector solenoid valve fails, the
engine will not run smoothly and
performance will be reduced.
The pump/injector solenoid valve has a dual
safety function.
If the valve stays open, pressure cannot
build up in the pump/injector.
If the valve stays closed, the high-pressure
chamber of the pump/injector can no longer
be filled.
In either case, no fuel is injected into
the cylinders.

Electrical circuit

J248 Diesel Direct Fuel Injection Engine
Control Module
N240 Valve for Pump/Injector, Cylinder 1
N241 Valve for Pump/Injector, Cylinder 2
N242 Valve for Pump/Injector, Cylinder 3
N243 Valve for Pump/Injector, Cylinder 4