Passat Wagon L4-1781cc 1.8L Turbo (AEB) (1998)
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Check wiring for open circuit between Test Box and harness connector using Wiring diagram.
Terminal 1 + socket 66
Terminal 2 + socket 59
Terminal 3 + socket 69
Terminal 4 + socket 62
Terminal 5 + socket 75
Terminal 7 + socket 67
Terminal 8 + socket 74
Wire resistance: Max. 1.5 Ohms
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Check wires for shorting to one another.
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Specification: Infinity Ohms
If wiring OK:
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Check Engine Control Module Voltage supply.