audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

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Disconnect electrical harness connector -2-.

Checking voltage supply

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Switch ignition on.

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Connect multimeter for voltage measurement as follows.

Harness connector

Specified value 

Terminal 
1 + Ground (GND)

approx. 5 V 

1 + 5

approx. 5 V 

2 + Ground (GND)

approx. 5 V 

2 + 3 

approx. 5 V

 

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Switch ignition off.  

If specified values are not obtained: 

Checking wire connections

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Connect test box to wiring harness of Engine Control Module (ECM); ECM is not connected. See: Computers and Control Systems/Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/With Generic Scan Tool/Test Box, Connecting For Wiring
Test

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