TT Quattro Roadster V6-3.2L (BHE) (2005)
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Using a Multimeter, check the Engine Coolant Temperature (ECT) Sensor G62 electrical harness connector terminals to the Motronic Engine
Control Module (ECM) J220 electrical harness connector terminals for resistance.
Engine Coolant Temperature
Motronic Engine Control Module
(ECT) Sensor G62 electrical
(ECM) J220 electrical connector
harness connector terminals
terminals or test box socket
1
93
2
108
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Specified value: 1.5 Ohms Max.
If the specification was not obtained:
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Check the wiring for a short circuit to each other, Battery (+), and Ground (GND).
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Check the electrical harness connector for damage, corrosion, loose or broken terminals.
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If necessary, repair the faulty wiring connection.
If no malfunction is detected in the wiring:
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Erase the DTC memory. See: Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Mode 04 - Erase DTC Memory
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Perform a road test to verify repair.
If the DTC does not return:
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Repair complete, Generate readiness code. See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Readiness Code
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End diagnosis.
If the DTC does return and no malfunction is detected in the wiring and the voltage supply was OK:
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Replace the Motronic Engine Control Module (ECM) J220.
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Assembly is performed in the reverse of the removal.
Final procedures
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After repair work, the following work steps must be performed in the following sequence:
1. Check the DTC memory. See: Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Mode 03 - Read DTC Memory
2. If necessary, erase the DTC memory. See: Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Mode 04 - Erase DTC
Memory
3. If the DTC memory was erased, generate readiness code.
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End of diagnosis