Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI199590 QUATTRO SPORT V6-2.8L (AAH)REPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULEDESCRIPTION AND OPERATIONENGINE SPEED SIGNAL
1995 Audi 90 Quattro Sport V6-2.8L (AAH)
Engine Speed Signal
1995 Audi 90 Quattro Sport V6-2.8L (AAH)SECTION Engine Speed Signal
OPERATION
The Engine Speed Signal is connected to pin B 10 of the Engine Control Module, the signal is directional OUT only (PIN B 10 - OUTPUT ONLY). The engine speed signal is produced from information supplied to the Engine Control Module by the engine speed sensor.
PURPOSE
This signal is used as engine speed information by the automatic transmission control module (TCM).
NOTE:
This signal is simultaneously used by the tachometer for display of engine speed in rpm's.
The Engine Speed Signal is connected to pin B 10 of the Engine Control Module, the signal is directional OUT only (PIN B 10 - OUTPUT ONLY). The engine speed signal is produced from information supplied to the Engine Control Module by the engine speed sensor.
PURPOSE
This signal is used as engine speed information by the automatic transmission control module (TCM).
NOTE:
This signal is simultaneously used by the tachometer for display of engine speed in rpm's.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.