S4 Quattro Sedan V6-2.7L Turbo (APB) (2000)
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Test continuity of screening (shielded wire) between contact 1 on engine speed sender connector and socket 108 on test box.
Specified value: max. 1 Ohm.
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Test continuity of negative wire from contact 2 on sender connector to socket 90 on test box.
Specified value: max. 1 Ohm.
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Test continuity of signal wire from contact 3 on sender connector to socket 82 on test box.
Specified value: max. 1 Ohm.
If the values are not as specified:
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Rectify short or open circuit in wiring between sender connector and control module connector.
Terminal on sensor
Terminal on control
connector
module connector
1
108
2
90
3
82
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If no open circuits or short circuits are identified, replace Engine Control Module (ECM).