TT Quattro Coupe L4-1.8L Turbo (AWP) (2001)
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Bridge terminals 3 + 4 of connector using the respective adapter cables and observe the indication on display.
Continuation for all vehicles
If indication jumps to approx. 143 degree 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-.
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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/Scan Tool Testing/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/Audi Drive Cycle/Readiness Code/With
Generic Scan Tool/Readiness Code, Generating
If indication remains at approx. -40 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. 143 degree C:
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Disconnect 4-pin connector -1- from Engine Coolant Temperature (ECT) Sensor -G62- (-2-).
If indication jumps to approx. -40 degree 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-.
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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/Scan Tool Testing/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/Audi Drive Cycle/Readiness Code/With
Generic Scan Tool/Readiness Code, Generating
If indication remains at approx. 143 degree 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: Testing and Inspection/Reading and Clearing Diagnostic
Trouble Codes/Scan Tool Connecting/With Generic Scan Tool/Test Box, Connecting For Wiring Test
Coolant temperature sensor with square connector:
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Check wires between test box and 4-pin connector for open circuit according to wiring diagram.