A4 Quattro Wagon V6-3.0L (AVK) (2002)
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Disconnect connectors to Intake manifold change-over valve -N156- -1-.
Both cylinder banks, continued
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Disconnect all connectors for injectors of relevant cylinder bank, release connectors underneath for this purpose (arrow).
Checking internal resistance
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Connect multimeter to injector to measure resistance.
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Specified value: 11 to 13 Ohms (at room temperature).
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When the engine is at operating temperature the resistance is increased by approx. 4 to 6 Ohms.
If specified value is not obtained:
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Replace injector.
If specified value is obtained:
