Inspection Procedure

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Check for open, short and +B short in wire harness between HV ECU ABFS terminals and airbag ECU GSW 2 terminal (See page IN-41).

HINT:

Confirm that there is no open circuit in the wire harness. If the battery voltage is always applied to the HV ECU ABFS terminal with the ignition ON, the airbag signal circuit has +B short.

How Repair P3109 Toyota Prius

DTC

P3109

Brake ECU Communication Circuit Malfunc

tion

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