A6 Quattro Wagon V6-3.2L (BKH) (2006)
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Check the Engine Control Module (ECM) Power Supply Relay (J363). => [ Engine Control Module Power Supply Relay, Checking ] See: Testing
and Inspection/Component Tests and General Diagnostics/Component Tests (SAE Code Tests)/Engine Control Module Power Supply Relay,
Checking
Checking Ground (GND)
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Using a Multimeter, check the following wiring connections for resistance.
Specified value: 1.5 ohms max.
If any of the specified values are not obtained:
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Check the electrical harness connector for damage, corrosion, loose or broken terminals.
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If necessary, repair the wiring connection.
If no malfunctions are found in the wiring and the voltage supply was OK:
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Perform a road test to verify any electrical repairs.
If the fault does not return:
Repair complete, Generate readiness code. Refer to => [ Readiness Code ] See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness
Codes/Readiness Code.
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End diagnosis.
If the fault does return and no malfunction is detected in the wiring and the voltage supply was OK:
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Replace the Engine Control Module (ECM) (J623). Refer to => [ Engine Control Module, Replacing ] See: Service and Repair/Engine Control
Module, Replacing.
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Assembly is performed in the reverse of the removal.
After the 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/Diagnostic Mode 03 - Read DTC Memory.
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/Diagnostic Mode 04 - Erase DTC Memory.
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/Readiness Code.