Engine control unit
Replacing engine control unit
The engine control unit regulates the injection, throttle valve control part, Lambda control, ignition, knock control, activated charcoal filter solenoid valve 1, engine speed governor via injectors or fuel pump relay, intake manifold change-over as well as self-diagnosis.
Special tools, workshop equipment, testers, measuring instruments and auxiliary items required
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◆ Fault reader V.A.G 1551 with cable V.A.G 1551/3
Work sequence
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‒ First print out the control unit identification and thereby the previous control unit coding as follows:
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‒ Connect the fault reader V.A.G 1551 (V.A.G 1552). Then switch ignition on and select engine control unit with the "Address word" 01.
(Connecting fault reader and selecting engine control unit
.)
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