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DTC B1373: Lost Communication with Wiper System LIN BUS [12/2019 - 11/2023]: Description

The main body ECU (multiplex network body ECU) and rain sensor communicate via LIN communication. The main body ECU (multiplex network body ECU) stores this DTC if communication becomes abnormal.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory DTC Output from
B1373 Lost Communication with Wiper System LIN BUS Detection condition: 
  1. Auxiliary battery voltage is 9.5 V or more

Malfunction Status: 

  1. A malfunction in the communication or LIN communication line between the main body ECU (multiplex network body ECU) and components of the wiper system occurs

Malfunction Time: 

  1. 7 seconds or more 3 times consecutively
  • Main body ECU (multiplex network body ECU)
  • Harness or connector
  • Rain sensor
 ◦ Main Body
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