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 OPERATIONSHIFT POINT SIGNAL
1995 Audi 90 Quattro Sport V6-2.8L (AAH)
Shift Point Signal
1995 Audi 90 Quattro Sport V6-2.8L (AAH)SECTION Shift Point Signal
OPERATION
The Shift Point Signal is connected to pin B 13 of the Engine Control Module, the signal is directional IN only (PIN B 13 - INPUT ONLY).
The shift point signal comes from the automatic transmission control module (TCM).
PURPOSE
The Engine Control Module uses this signal to recognize upshifts and downshifts of the automatic transmission.
For additional shifting comfort, The Engine Control Module retards the ignition timing and therefore reduces engine torque during shift operations.
Self-diagnosis:
^ Self-diagnosis (OBD) recognizes a continuous signal (short to ground) as a fault. The signal is then no longer accepted.
The Shift Point Signal is connected to pin B 13 of the Engine Control Module, the signal is directional IN only (PIN B 13 - INPUT ONLY).
The shift point signal comes from the automatic transmission control module (TCM).
PURPOSE
The Engine Control Module uses this signal to recognize upshifts and downshifts of the automatic transmission.
For additional shifting comfort, The Engine Control Module retards the ignition timing and therefore reduces engine torque during shift operations.
Self-diagnosis:
^ Self-diagnosis (OBD) recognizes a continuous signal (short to ground) as a fault. The signal is then no longer accepted.
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.