A4 Quattro Wagon L4-2.0L Turbo (BPG) (2005)
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Using Voltage Tester VAG1527B or equivalent, check the fuel Injector electrical connector for voltage.
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Operate starter and test activation for Fuel Injector.
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LED should flicker.
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Switch ignition off.
If LED does not flicker:
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Connect the Test Box 105 Pin VAG1598/42 to the wiring harness of the Engine Control Module (ECM) J623. The ECM is not connected.
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Using the Test Box 105 Pin VAG1598/42 and Multimeter V.A.G 1526 A or equivalent, check the following wiring connection for an open circuit.
Specified resistance 1.5 Ohms max.
If the specified value is not obtained:
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Repair the wiring connection.
If no malfunctions are found in the wiring:
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Replace the Engine Control Module (ECM) J623.
Assembly is performed in the reverse order of removal, note the following:
Final procedures
After repair work, the following work steps must be performed in the mentioned sequence:
1. Check the DTC memory.
2. If necessary, erase the DTC memory.
3. If the DTC memory was erased, generate readiness code.
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End diagnosis and switch ignition off.
