Passat GLS 4Motion V6-2.8L (ATQ) (2002)
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Check wires according to wiring diagram.
Continuation of test if indication is approx. 143 degrees C:
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Disconnect connector -1- from Intake Air Temperature (IAT) Sensor -G42- (-2-).
If indication jumps to approx. -40 degrees C:
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End diagnosis and switch ignition off.
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Replace Intake Air Temperature (IAT) Sensor -G42-, item 10.
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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data.
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Generate readiness code. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles
and Readiness Codes
If indication remains at approx. 143 degrees C:
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End diagnosis and switch ignition off.
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Check wires according to wiring diagram.
Checking wiring
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Connect test box to control module wiring harness, connect test box for wiring test. See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/With Generic Scan Tool/Test Box,
Connecting For Wiring Test
Vehicles with engine code AHA
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Check wires between test box and 2-pin connector for open circuit according to wiring diagram.
Terminal 1 + socket 54
Terminal 2 + socket 67
Wire resistance: max: 1.5 Ohms
Vehicles with engine code ATQ