A4 Mk1
Servicing Motronic injection system
Checking injectors
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A - Electrical testing of injectors
When the engine is at operating temperature, the resistance is increased by approx. 4...6 ω.
B - Testing power supply Test conditions |
=> Current Flow Diagrams, Electrical Fault-Finding and Fitting Locations
=> Current Flow Diagrams, Electrical Fault-Finding and Fitting Locations |
C - Testing activation of injectors
Specification: The diode test lamp should flash. Note: Diode test lamps with a low current draw continue to glow faintly between impulses from the engine control unit (rather than going out completely) and become much brighter when receiving an impulse. |
If the diode test lamp does not flash:
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