Trip Computer: Testing and Inspection

TROUBLESHOOTING ON-BOARD COMPUTER

Troubleshooting the on-board computer (BC) requires checking all functions first. Proceed in the sequence specified in operating instructions. If a function is not okav, correct the cause before continuing with the remaining functions.

Important!
Testing instructions in this chart refer to the "BMW SERVICE TEST" and the pertinent multimeter functions (M). Make connections according to operating instructions of BMW service test unit.

















Replace control panel in the case of partial or complete failure of the on-board computer display.
Also replace control panel in case of partial failure of diodes (LEDs).
If only one LED fails, light bulb in control panel could be faulty.