TT Coupe L4-1.8L Turbo (AWP) (2005)
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Bridge terminals 1 + 3 of connector using the corresponding adapter cables and observe the indication on display.
Coolant temperature sensor with oval connector:
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Bridge terminals 3+4 of connector using the corresponding adapter cables and observe the indication on display.
All Vehicles
If display jumps to approx. 143 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) Gauge Sensor -G2-.
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Erase DTC memory of ECM. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Scan Tool Testing and
Procedures/Diagnostic Mode 04 - Erase DTC Memory
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Generate readiness code. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles
and Readiness Codes/Generate Readiness Code
If display stays at approx. -40 degrees C:
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End diagnosis and switch ignition off.
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Check wiring according to wiring diagram.
Continuation of Test If Display Shows Approx. 143 degrees C:
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Disconnect 4-pin connector -1 - from Engine Coolant Temperature (ECT) Sensor -G62- (- 2 -).
If display jumps to approx. -40 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) Gauge Sensor -G2-.
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Erase DTC memory of ECM. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Scan Tool Testing and
Procedures/Diagnostic Mode 04 - Erase DTC Memory
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Generate readiness code. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles
and Readiness Codes/Generate Readiness Code
If display stays at approx. 143 degrees C:
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End diagnosis and switch ignition off.
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Check wiring according to wiring diagram.
Checking Wiring
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Connect test box to control module wiring harness. See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Component Tests and General Diagnostics/Test Box, Connecting For Wiring Test
Coolant temperature sensor with square connector: