Passat Sedan V6-2771cc 2.8L DOHC (AHA) (1998)
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
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Check wires between test box and 2-pin connector for open circuit according to wiring diagram.
Terminal 1 + socket 85
Terminal 2 + socket 108
Wire resistance: max: 1.5 Ohms
Continuation for all vehicles
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Also check wires for short circuits to each other, to vehicle Ground (GND) and to B+.
Specified value: Infinity Ohms
If no malfunctions are found in wire: