volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Engine Coolant Temperature (ECT) Sensor (on Radiator), Checking|Page 2608 > < Engine Coolant Temperature (ECT) Sensor (on Radiator), Checking|Page 2606
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Terminal 1 + socket 17
Terminal 2 + socket 50
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: Infinity Ohms

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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 no malfunctions are detected in the wires and the resistance values are OK:

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Replace Motronic Engine Control Module (ECM) -J220-.

Engine Coolant Temperature (ECT) Sensor (on Radiator), Checking|Page 2608 > < Engine Coolant Temperature (ECT) Sensor (on Radiator), Checking|Page 2606