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DTC B1278 Combination Switch ECU Communication Stop
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Wiring Diagram
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DTC B1278 Combination Switch ECU Communication Stop: Wiring Diagram
WARNING:
This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Windshield Wiper Switch Assembly And Gateway ECU - Wiring Diagram
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