New Beetle L4-1.8L Turbo (AWP) (2003)
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Connect VAG 1598/31 test box to control module wiring harness. Motronic Engine Control Module (ECM) -J220- is not connected by this action.
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Check wiring between test box and connector terminals for open circuit using Electrical Wiring Diagram:
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terminal 1 + Socket 92
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terminal 2 + Socket 83
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terminal 3 + Socket 117
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terminal 4 + Socket 84
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terminal 5 + Socket 118
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terminal 6 + Socket 91
Wire resistance: max. 1.5 Ohms
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Additionally check wires for short to one another.
Specification: Infinity Ohms
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Check wiring additionally for short circuit to battery positive or Ground (GND).
Specification: Infinity Ohms
If no wiring malfunction is found:
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Check Motronic Engine Control Module (ECM) -J220- voltage supply. See: Testing and Inspection/Component Tests and General
Diagnostics/Engine Control Module (ECM) Voltage Supply, Checking