Group 30: Electrical system
Diagnostic Trouble Codes
103
FMI 7
Conditions for fault code:
Injector activated and cylinder balancing above limit.
If a fault code is set when the engine has an unsym-
metrical load it can not be rectified. At idle speed the
engine control unit is trying to compensate for uneven
running by adding more or less fuel to the injectors,
cylinder balancing. If the engine load is too unsymmet-
rical the compensation is not enough and a fault code
will be set.
Possible reason:
•
Unsymmetrical load of the engine.
•
Poor / uneven compression.
•
Faulty injector.
Suitable action:
1.
Clear the fault code with the Vodia tool. Let the
engine run at idle speed without any load and see
if the fault code reappear.
2.
Perform test of cylinder compression using the
VODIA tool.
3.
Change only the faulty injector.
FMI 12 Checking injector circuit
Conditions for fault code:
Low injector hold current. Injector activated.
Possible reason:
•
Intermittent fault.
Suitable action:
1.
Check cables harness and connectors between
injector and engine control unit.
