Thread: 1984 BMW 633csi
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wfwright2 wfwright2 is offline
Join Date: Oct 2014
Posts: 9
It might be difficult to draw the diagnostic codes out of that system. It really does not generate and store codes like the current batch of cars.
Find online a copy of the Electrical Troubleshooting Guide for your year and model of car. The e28 Bentley manual is also helpful.
The diagnostic port provides test points for charging system voltage, starter signal, and others based on model build year and engine control module, but no direct failure mode codes.

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Old 08-16-2020, 07:19 AM
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