A4 Quattro Sedan L4-1.8L Turbo (AEB) (1998)
Display Field 4
Wiring, checking:
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Switch ignition off.
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Connect VAG 1598/22 test box to ECM harness connector. Refer to "Scan Tool Testing/Scan Tool Connecting and Initial Checks/Connecting
VAG 1598/22 Test Box" See: Testing and Inspection
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Disconnect 2-pin connector from Intake Air Temperature (IAT) sensor -G42-.
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Check wiring for open circuit between ECM/test box and 2-pin IAT harness connector (to ECM).
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Connector terminal 1 to ECM/test box socket 54
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Connector terminal 2 to ECM/test box socket 67
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Specified value: max. 1.5 Ohms
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Check wiring for short circuit between ECM/test box and 2-pin harness connector according to wiring diagram.
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Connector terminal 1 to vehicle Ground
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Connector terminal 1 to ECM/test box socket 67
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Connector terminal 1 to terminal 2
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Connector terminal 2 to vehicle Ground
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Specified value: Infinity Ohms
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Check wiring between ECM and 2-pin harness connector for short circuit to battery B+.
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Connector terminal 1 to vehicle Ground
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Connector terminal 2 to vehicle Ground
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Specified value: 0 volts