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Home >> Lexus >> 2016 >> RX 350 Base, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Wiper/Washer Systems >> Wiper System / Washer System - Diagnostic Codes & Circuit Tests >> Wiper And Washer System >> DTC B1372: Wiper Switch Signal Mismatch between LIN and Line [09/2015 - ] >> Description
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DTC B1372: Wiper Switch Signal Mismatch between LIN and Line [09/2015 - ]: Description

Under normal operation, the front wiper motor and link assembly (wiper ECU) receives operation signals from the windshield wiper switch assembly via LIN communication.

The windshield front wiper motor and link assembly (wiper ECU) and windshield wiper switch assembly are also connected via direct line in order to operate the front wipers in HI in an emergency. If the operation signals sent via LIN communication and direct line do not match, this DTC is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory DTC Output from
B1372 Wiper Switch Signal Mismatch between LIN and Line When the battery voltage is 9.5 V or more, the operation signals sent via LIN communication and direct line do not match for 10 seconds or more.
  • Front wiper motor and link assembly (wiper ECU)
  • Windshield wiper switch assembly
  • Harness or connector
Front wiper motor and link assembly (wiper ECU)