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Home >> BMW >> 2001 >> M5 >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Bus System Troubleshooting - Overview - E36, E38, E39, E46, E52 & E53 >> Bus System Troubleshooting >> Information and Body Bus (I and K bus) >> Troubleshooting The I/K Bus >> Flat line at 5 volts

Flat line at 5 volts

No output voltage from the Master or Standby controllers. Bus line may be open or control unit may be defective.

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