Passat Syncro Sedan V6-2771cc 2.8L DOHC (AHA) (1999)
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Connect VAG1598/22 test box to ECM harness connector.
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Disconnect 2-pin connector -1- from Intake Air Temperature (IAT) sensor -2-.
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Check wire between test box socket 67 and 2 pin connector terminal 2 for open circuit using wiring diagram.
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Specified value: max. 1.5 Ohms
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Check wire between test box socket 54 and 2 pin connector terminal 1 for open circuit using wiring diagram.
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Specified value: max. 1.5 Ohms
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Check wiring between ECM and 2-pin harness connector for short circuit to battery B+.
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Specified value: Infinity Ohms
If wiring is OK:
