Passat Sedan L4-1781cc 1.8L Turbo (AEB) (1999)
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Replace Engine Control Module.
Voltage supply and wiring to Control Module, checking
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Disconnect 8-pin harness connector to Throttle Body Control Module.
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Switch Multimeter to Voltage range
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Connect Multimeter between connector terminals 4 + 7.
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Switch ON ignition.
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Specification: 4.5 Volts minimum
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Switch OFF ignition.
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Connect Multimeter between connector terminals 3 + 7.
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Switch ON ignition.
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Specification: 9 Volts minimum
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Switch OFF ignition.
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Connect VAG 1598/22 Test Box to Engine Control Module harness connector.
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Check wiring for open circuit between Test Box and harness connector using Wiring diagram.
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Terminal 1 + socket 66
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Terminal 2 + socket 59
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Terminal 3 + socket 69
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Terminal 4 + socket 62
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Terminal 5 + socket 75
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Terminal 7 + socket 67