audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Fuel Injectors, Checking|Page 3834 > < Fuel Injectors, Checking
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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.

Specified value: 11 to 13 Ohms (at room temperature)

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:

Checking power supply

Fuel Injectors, Checking|Page 3834 > < Fuel Injectors, Checking