Jetta L4-2.0L (BEV) (2004)
If indication remains at approx.-46.5 degrees 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. 141.0 degrees 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. -46.5 degrees C
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End diagnosis and switch ignition off.
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Replace Engine Coolant Temperature (ECT) sensor -G62- with Engine Coolant Temperature (ECT) sensor -G2-.
WARNING:
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The cooling system is under pressure.
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Danger of scalding when opening.
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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. 141.0 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: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/Test Box, Connecting For Wiring Test
Vehicles with old connector shape
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Check wires between test box and 4-pin connector for open circuit according to wiring diagram.
Terminal 1 + socket 67
Terminal 3 + socket 53
Wire resistance: max. 1.5 Ohms