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Home >> Lexus >> 2011 >> IS 350C >> Repair and Diagnosis >> External Pages >> Different car >> Section 352 (Multiplex Communication System (Diagnostics Codes)) >> Multiplex Communication System >> DTC B1278: Combination Switch ECU Communication Stop >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2011 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

HINT: 

If "+B of GND short malfunction of communication bus" DTCs (B1214 and B1215) are detected at the same time as "communication stop" DTC B1278, repair the "+B or GND short malfunction of communication bus" DTCs first. Refer to DTC B1214: Short to B+ in Door System Communication Bus Malfunction; DTC B1215: Short to GND in Door System Communication Bus Malfunction .

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