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Home >> Lexus >> 2007 >> IS 250 AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Multiplex Communication >> Multiplex Communication System >> DTC B1278 Combination Switch ECU Communication Stop >> Description

DTC B1278 Combination Switch ECU Communication Stop: Description

This DTC is detected when communication between the combination switch (windshield wiper switch) and network gateway ECU stops for more than 10 seconds.

DTC DETECTION CONDITION AND TROUBLE AREA TABLE

DTC No. DTC Detection Condition Trouble Area
B1278 Combination switch ECU communication stops
  • Combination switch assembly (windshield wiper switch)
  • Wire harness
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