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DTC U1170-87: Lost Communication with Brake System Control Module (ch2) Missing Message [11/2022 - 11/2023]: Description

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DTC No. Detection Item DTC Detection Condition Trouble Area Note
U1170-87 Lost Communication with Brake System Control Module (ch2) Missing Message Communication stops between the engine stop and start ECU and the brake actuator assembly.
  • CAN main/branch bus lines or connector
  • Brake actuator assembly
  • Engine stop and start ECU
  • ECM
  • No. 9 global CAN junction connector
 DTC Output from
  • Engine stop and start ECU
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