A8 Quattro Sedan V8-4.2L (AUX) (2001)
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(measurement taken between terminals 1 and 2 without unplugging connector and while operating starter):
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Replace relevant Hall sensor.
If the readouts do not match the specification, check the wiring.
Checking wiring between Hall sensor and engine control module
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Connect VAG1598/31 test box to wiring harness for engine control module. Do not connect to the engine control module itself. Refer to "Scan
Tool Testing/Scan Tool Connecting and Initial Checks/Connecting VAG1598/31 Test Box" See: Computers and Control Systems/Testing and
Inspection
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Check wiring connection from Hall sensor to engine control module for open circuit and/or short circuit to B+ or Ground (GND).
