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 OPERATIONDIGITAL MOTOR ELECTRONIC (DME)FUNCTIONAL DESCRIPTIONSTRANSMISSION INTERVENTION IN EH TRANSMISSION
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)
Transmission Intervention In EH Transmission
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)SECTION Transmission Intervention In EH Transmission
OPERATION
During the shift procedure, the Electronic Transmission Control (EGS) control unit sends the Digital Motor Electronic (DME) control unit a signal which has the effect of retarding the ignition timing and reducing the torque. This ensures smooth transition to the next drive range.
As soon as the torque converter clutch has engaged, the DME control unit switches over to another ignition timing characteristic map.
During the shift procedure, the Electronic Transmission Control (EGS) control unit sends the Digital Motor Electronic (DME) control unit a signal which has the effect of retarding the ignition timing and reducing the torque. This ensures smooth transition to the next drive range.
As soon as the torque converter clutch has engaged, the DME control unit switches over to another ignition timing characteristic map.
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.