S8 Quattro Sedan V10-5.2L (BSM) (2009)
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Remove the Throttle Valve Control Module 2 (J544).
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Using a Multimeter, check the Throttle Valve Control Module 2 (J544) electrical harness connector terminals to the Engine Control Module
(ECM) 2 (J624) electrical harness connector T60d terminals for an open circuit.
Specified value: 1.5 ohms max.
If the specification is not obtained:
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Check the wiring for a short circuit to each other, Battery (+), and Ground (GND) or an open circuit.
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Check the electrical harness connector for damage, corrosion, lose or broken terminals.
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If necessary, repair the faulty wiring connection.
If no malfunction is detected in the wiring and if the voltage supply was not OK:
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Replace Engine Control Module (ECM) 2 (J624).
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Assembly is performed in the reverse order of removal.
Final procedures
After repair work, the following work steps must be performed in the following sequence:
1. Check the DTC memory. Refer to => [ Diagnostic Mode 03 - Read DTC Memory ] See: Testing and Inspection/Scan Tool Testing and
Procedures/Diagnostic Modes 01 - 09.
2. If necessary, erase the DTC memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] See: Testing and Inspection/Scan Tool Testing
and Procedures/Diagnostic Modes 01 - 09.
3. If the DTC memory was erased, generate readiness code. Refer to => [ Readiness Code ] See: Testing and Inspection/Monitors, Trips, Drive
Cycles and Readiness Codes.
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End of diagnosis.