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 MANUALSBMW1993740IL (E32/2) V8-3982CC 4.0L DOHC (M60)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSDESCRIPTION AND OPERATIONENGINE CONTROL SYSTEM INPUTSGEAR SELECTION SIGNAL / CAN
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)
Gear Selection Signal / CAN
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)SECTION Gear Selection Signal / CAN
SWITCHED INPUT
The park/neutral input signal to the ECM is needed for idle speed regulation. On earlier systems (pre M3.x) the signal type varies depending on ECM or Transmission versions.
WHEN P/N SELECTED ECM RECEIVES A SWITCHED SIGNAL
CAN (Controller Area Network)
CAN was introduced on BMW vehicles starting with the 1993 740i/iL with M3.3. The CAN is used between the engine and transmission control modules (among others). The CAN supplies the ECM and the EGS with all related operating data required by their operation. The CAN is a high speed bus that transfers one million bits of information per second.
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.