I am working on a 95 525it that will not start. The car has a transmission program message on the dash & the gear indicator will only display for a second following key on before it goes blank. When I am able to communicate with the trans module it shows no faults stored and all gear positions are read correctly. Most of the time I get no communication with multiple modules. When the communication issue is occurring the only modules I can talk to are the airbag, abs & ews module. The car can be started by jumping the starter.
I am having trouble finding how the transmission communicates on this car. The wiring diagram shows a can bus to the DME & EGS is the cluster used as a gateway between the diag & can bus for diagnosis like on later cars? Is the gear indicator transmitted via can to other modules?
I am having trouble finding how the transmission communicates on this car. The wiring diagram shows a can bus to the DME & EGS is the cluster used as a gateway between the diag & can bus for diagnosis like on later cars? Is the gear indicator transmitted via can to other modules?
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