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ME9 / U0155 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Faulty display in MIU.

  U0155 00


MIU Missing on BUS

Fault symptom

Faulty display in MIU.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Ignition ON.
Battery voltage must be between 10 - 18 V.

Fault criteria:

No communication with MIU.

Dependent:

None

Fault handling:

Type III
(See section Fault handling III, "Other emission-related components and functions" for more information.)

Checking the wiring harness

Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.

Diagnostic help

Diagnosis regards:

Electrical fault on bus leads or in the component.
See fault diagnosis for relevant MIU diagnostic trouble code plus bus fault diagnosis.

Functions in the diagnostic tool related to the fault:

Response test, under "All/Bus" menu.
Read / Reset Bus Configuration
Read / Clear Bus Off Counter