Passat L4-1.8L Turbo (AWM) (2004)
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Continued for all vehicles
If indication jumps to approx. 143 degrees C:
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End diagnosis and switch ignition off.
-
Replace Engine Coolant Temperature (ECT) Sensor -G62- with Engine Coolant Temperature (ECT) Sensor -G2-.
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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. See: 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: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If indication remains at approx. -40 degrees C:
-
End diagnosis and switch ignition off.
-
Check wires according to wiring diagram.
Continuation of test if indication is approx. 143 degrees C:
-
Disconnect 4-pin connector -1- from Engine Coolant Temperature (ECT) Sensor -G62- (-2-).
If indication jumps to approx. -40 degrees C:
-
End diagnosis and switch ignition off.
-
Replace Engine Coolant Temperature (ECT) Sensor -G62- with Engine Coolant Temperature (ECT) Sensor -G2-.
-
Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. See: Testing and Inspection/Scan Tool
Testing and Procedures/With Generic Scan Tool/Diagnostic Mode 4: Reset/Erase Diagnostic Data
-
Generate readiness code. See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If indication remains at approx. 143 degrees C:
-
End diagnosis and switch ignition off.
-
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.
Vehicles with engine code AEB
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Disconnect 4-pin connector -1- from Engine Coolant Temperature (ECT) Sensor -G62- (-2-).
-
Check wires between test box and 4-pin connector for open circuit according to wiring diagram.
Terminal 1 + socket 53
Terminal 3 + socket 67
Wire resistance: max: 1.5 ohms
Vehicles with engine code ATW, AUG, AWM
I - Engine code ATW
II - Engine code AUG, AWM
