A3 L4-2.0L Turbo (CBFA) (2008)
If the specified value was obtained:
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Connect the black multimeter lead to terminal 1 of the Radiator Identification Sensor G611 harness connector and the red lead to Battery positive.
Specified value: Battery voltage.
If the specified value was Not obtained:
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Check for an open circuit or high resistance between Radiator Identification Sensor G611 terminal 1 and the Motronic Engine Control Module
(ECM) J623 connector terminal 52.
Checking wiring
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Disconnect the Motronic Engine Control Module (ECM) J623 T94 electrical harness connector.
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Disconnect the Radiator Identification Sensor G611 module T3 electrical harness connector.
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Using a multimeter, check the Motronic Engine Control Module (ECM) J623 T94 electrical harness connector terminal 64 to the Radiator
Identification Sensor G611 module T3 electrical harness connector terminal 2 for resistance.
Specified value: 1.5 Ohms max.
If the specified value was not obtained:
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Check the wiring connection for damage, corrosion, loose or broken terminals.
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If necessary, repair the faulty wiring connection.
If the specified value was obtained:
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Replace the Radiator Identification Sensor G611 (with radiator assembly).
Final procedures
After the 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. See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes