Motronic injection and ignition system
Checking control unit voltage supply
Special tools, testers and auxiliary items
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◆ Fault reader V.A.G 1551 or vehicle system tester V.A.G 1552 with cable V.A.G 1551/3
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◆ Test box V.A.G 1598/18
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◆ Hand multimeter V.A.G 1526 or multimeter V.A.G 1715
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◆ Adapter set V.A.G 1594
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◆ Current flow diagram
Test sequence
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‒ Connect fault reader V.A.G 1551 (V.A.G 1552) and select engine electronics control unit with the "Address word" 01. When doing this the ignition must be switched on.
(Connecting fault reader and selecting engine electronics control unit
.)
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