New Beetle GLS L4-2.0L (AVH) (2001)
If indication jumps to approx.. -40.0 degrees C:
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End diagnosis and switch ignition off.
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Replace Engine Coolant Temperature (ECT) Sensor -G62-:
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Vehicles with engine code AVH, AZG, item 17,
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Vehicles with engine code BDC, item 15.
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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: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If indication remains at approx.. 140.0 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: Testing and Inspection/Reading and Clearing Diagnostic
Trouble Codes/Scan Tool Connecting/With Generic Scan Tool/Test Box, Connecting For Wiring Test
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Check wires between test box and 4-pin connector for open circuit according to wiring diagram.
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Terminal 3 + socket 93
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Terminal 4 + socket 108
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Wire resistance: max. 1.5 Ohms
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Also check wires for short circuit to each other, to vehicle Ground (GND) and to B+. Specified value: Infinite Ohms
If no malfunctions are found in wires:
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Measure resistance at Engine Coolant Temperature (ECT) Sensor -G62-, terminals C (signal) and D (Ground -GND-).