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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 118 (Can Communication System (HV) - Circuit Tests (1 Of 9) & Diagnostic Codes) >> CAN COMMUNICATION SYSTEM (for HV Model) >> DTC U111A-87: Lost Communication with ECM/PCM "A" (ch2) Missing Message; DTC U1150-00: Lost Communication with Hybrid Powertrain Control Module (ch2); DTC U1150-87: Lost Communication with Hybrid Powertrain Control Module (ch2) Missing Message; DTC U1159-87: Lost Communication with Electronic Brake Booster Control Module "A" (ch3) Missing Message; DTC U1170-87: Lost Communication with Brake System Control Module (Secondary CAN Line) Missing Message; DTC U117D-87: Lost Communication with Brake System Control Module (ch4) Missing Message [11/2023 - ] >> Description

DTC U111A-87: Lost Communication with ECM/PCM "A" (ch2) Missing Message; DTC U1150-00: Lost Communication with Hybrid Powertrain Control Module (ch2); DTC U1150-87: Lost Communication with Hybrid Powertrain Control Module (ch2) Missing Message; DTC U1159-87: Lost Communication with Electronic Brake Booster Control Module "A" (ch3) Missing Message; DTC U1170-87: Lost Communication with Brake System Control Module (Secondary CAN Line) Missing Message; DTC U117D-87: Lost Communication with Brake System Control Module (ch4) Missing Message [11/2023 - ]: Description

WARNING: This page is about a different variant/trim than selected.
DTC No. Detection Item DTC Detection Condition Trouble Area Note
U111A-87 Lost Communication with ECM/PCM "A" (ch2) Missing Message Communication stops between the hybrid vehicle control ECU and the ECM.
  • CAN main/branch bus lines or connector
  • ECM
  • Hybrid vehicle control ECU
  • No. 1 global CAN junction connector
 DTC Output from
  • Hybrid vehicle control ECU
U1150-00 Lost Communication with Hybrid Powertrain Control Module (ch2) Communication stops between the No. 1 skid control ECU (brake booster with master cylinder assembly) and the hybrid vehicle control ECU.
  • CAN main/branch bus lines or connector
  • No. 1 skid control ECU (brake booster with master cylinder assembly)
  • Hybrid vehicle control ECU
  • No. 1 global CAN junction connector
 DTC Output from
  • No. 1 skid control ECU (brake booster with master cylinder assembly)
U1150-87 Lost Communication with Hybrid Powertrain Control Module (ch2) Missing Message Communication stops between the ECM or No. 2 skid control ECU (brake actuator assembly) and the hybrid vehicle control ECU.
  • CAN main/branch bus lines or connector
  • ECM
  • Hybrid vehicle control ECU
  • No. 2 skid control ECU (brake actuator assembly)
  • No. 1 global CAN junction connector
 DTC Output from
  • ECM
  • No. 2 skid control ECU (brake actuator assembly)
U1159-87 Lost Communication with Electronic Brake Booster Control Module "A" (ch3) Missing Message Communication stops between the No. 2 skid control ECU (brake actuator assembly) and the No. 1 skid control ECU (brake booster with master cylinder assembly).
  • CAN main/branch bus lines or connector
  • No. 1 skid control ECU (brake booster with master cylinder assembly)
  • No. 2 skid control ECU (brake actuator assembly)
  • No. 1 global CAN junction connector
 DTC Output from
  • No. 2 skid control ECU (brake actuator assembly)
U1170-87 Lost Communication with Brake System Control Module (Secondary CAN Line) Missing Message Communication stops between the hybrid vehicle control ECU and the No. 2 skid control ECU (brake actuator assembly).
  • CAN main/branch bus lines or connector
  • Hybrid vehicle control ECU
  • No. 2 skid control ECU (brake actuator assembly)
  • No. 1 global CAN junction connector
 DTC Output from
  • Hybrid vehicle control ECU
U117D-87 Lost Communication with Brake System Control Module (ch4) Missing Message Communication stops between the No. 1 skid control ECU (brake booster with master cylinder assembly) and the No. 2 skid control ECU (brake actuator assembly).
  • CAN main/branch bus lines or connector
  • No. 1 skid control ECU (brake booster with master cylinder assembly)
  • No. 2 skid control ECU (brake actuator assembly)
  • No. 1 global CAN junction connector
 DTC Output from
  • No. 1 skid control ECU (brake booster with master cylinder assembly)
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