TT L4-1.8L Turbo (BEA) (2004)
Display Group 004
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Exit function "08 - Read measured value block" by pressing <- button.
Checking wire connections
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Connect test box V.A.G 1598/31 to wiring harness for ECM; do not connect ECM. See: Testing and Inspection/Reading and Clearing Diagnostic
Trouble Codes/Scan Tool Connecting/With Manufacturer's Scan Tool/Electrical Testing Using VAG1598/31 Test Box
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Disconnect connector to Intake Air Temperature (IAT) sensor -G42-.
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Check the following wire connections for open circuit and short circuit to Ground (GND) and B+:
Harness connector
VAG1598/31 test box
Terminal
Socket
1
85
2
108
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Check both wires to each other for short circuit.
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Repair open circuit or short circuit if necessary.
If no malfunctions are found in wires:
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Check Intake Air Temperature (IAT) sensor -G42-.
Checking sensor