Beetle L4-1781cc 1.8L Turbo (APH) (1999)
Specification: min. 11.5 V
If the specification is not attained:
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Check wiring for open circuit between 2-pin connector contact 1 and central electrics using wiring diagram.
If the specification is obtained:
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Remove inner plenum chamber cover, left:
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Connect test box V.A.G 1598/31 to control module wiring harness. The engine control module is not connected by this action.
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Check wiring for open circuit between test box and 2-pin connector using wiring diagram.
Contact 2 + socket 39
Wire resistance: Max. 1.5 Ohms
If the specification is obtained:
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Additionally check wires for short to one another.
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Additionally check the wiring for short to battery positive or Ground.
If no wiring problem is detected:
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Replace Engine Control Module (ECM).