Jetta GL L4-1.9L DSL Turbo (ALH) (2001)
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If no malfunctions are detected in wires:
Vehicles with 80-pin control module
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Disconnect 4-pin connector from Engine Coolant Temperature (ECT) Sensor -G62- with Engine Coolant Temperature (ECT) Sensor -G2- (arrow).
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Perform a resistance measurement at Engine Coolant Temperature (ECT) Sensor -G62- terminal 1 (Ground -GND-) and 3 (signal).
Vehicles with 121-pin control module
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Disconnect connector at coolant temperature sensor.
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Measure resistance between terminals 3 + 4 on sensor.
Vehicles with 154-pin control module
