Golf GLS L4-2.0L (AVH) (2002)
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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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Bridge terminals 3 + 4 of connector using the respective adapter cables and observe the indication on display.
If indication jumps to approx. 140.0 degree 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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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. See: Powertrain Management/Computers
and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/With Generic Scan Tool/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. -40.0 degree C:
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End diagnosis and switch ignition off.
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Check wires according to wiring diagram.
Continuation of test if indication is approx. 140.0 degree C:
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Disconnect 4-pin connector from Engine Coolant Temperature (ECT) sensor -G62- with Engine Coolant Temperature (ECT) sensor -G2- (arrow)
If indication jumps to approx. -40.0 degree 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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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. See: Powertrain Management/Computers