LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2024 >> TX 350 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 119 (Can Communication System - Circuit Tests (1 Of 4) & Diagnostic Codes) >> CAN COMMUNICATION SYSTEM (for 1Motor-HEV Model) >> DTC U111A-87: Lost Communication with ECM/PCM "A" (ch2) Missing Message; DTC U111A-00: Lost Communication with ECM/PCM "A" (ch2); DTC U1150-00: Lost Communication with Hybrid Powertrain Control Module (ch2); DTC U1150-87: Lost Communication with Hybrid/EV 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 (ch2) Missing Message; DTC U11B7-00: Lost Communication with TCM (ch4) (System 2) Missing Message; DTC U11B7-87: Lost Communication with TCM (ch4) Missing Message; DTC U11BC-87: Lost Communication with Hybrid/EV Powertrain Control Module (ch6) Missing Message; DTC U11BE-87: Lost Communication with ECM/PCM "A" (ch7) Missing Message [09/2023 - ] >> Description

DTC U111A-87: Lost Communication with ECM/PCM "A" (ch2) Missing Message; DTC U111A-00: Lost Communication with ECM/PCM "A" (ch2); DTC U1150-00: Lost Communication with Hybrid Powertrain Control Module (ch2); DTC U1150-87: Lost Communication with Hybrid/EV 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 (ch2) Missing Message; DTC U11B7-00: Lost Communication with TCM (ch4) (System 2) Missing Message; DTC U11B7-87: Lost Communication with TCM (ch4) Missing Message; DTC U11BC-87: Lost Communication with Hybrid/EV Powertrain Control Module (ch6) Missing Message; DTC U11BE-87: Lost Communication with ECM/PCM "A" (ch7) Missing Message [09/2023 - ]: Description

WARNING: This page is about a different car, the 2024 Lexus TX 500h. However, it is still accessible from the selected car via links, so may be relevant.
DTC No. Detection Item DTC Detection Condition Trouble Area Note
U111A-00 Lost Communication with ECM/PCM "A" (ch2) Communication stops between the hybrid vehicle control ECU assembly and the ECM.
  • CAN main/branch bus lines or connector
  • Hybrid vehicle control ECU assembly
  • ECM
  • No. 4 CAN junction connector
  • No. 14 CAN junction connector
 DTC Output from
  • Hybrid vehicle control ECU assembly
U111A-87 Lost Communication with ECM/PCM "A" (ch2) Missing Message Communication stops between the No. 2 skid control ECU (brake actuator assembly) or hybrid vehicle control ECU assembly and the ECM.
  • CAN main/branch bus lines or connector
  • No. 2 skid control ECU (brake actuator assembly)
  • Hybrid vehicle control ECU assembly
  • ECM
  • No. 4 CAN junction connector
  • No. 14 CAN junction connector
 DTC Output from
  • No. 2 skid control ECU (brake actuator assembly)
  • Hybrid vehicle control ECU assembly
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 assembly.
  • CAN main/branch bus lines or connector
  • No. 1 skid control ECU (brake booster with master cylinder assembly)
  • Hybrid vehicle control ECU assembly
  • No. 4 CAN junction connector
  • No. 14 CAN junction connector
 DTC Output from
  • No. 1 skid control ECU (brake booster with master cylinder assembly)
U1150-87 Lost Communication with Hybrid/EV Powertrain Control Module (ch2) Missing Message Communication stops between the ECM, TCM or No. 2 skid control ECU (brake actuator assembly) and the hybrid vehicle control ECU assembly.
  • CAN main/branch bus lines or connector
  • ECM
  • TCM
  • No. 2 skid control ECU (brake actuator assembly)
  • Hybrid vehicle control ECU assembly
  • No. 4 CAN junction connector
  • No. 14 CAN junction connector
 DTC Output from
  • ECM
  • TCM
  • 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. 2 skid control ECU (brake actuator assembly)
  • No. 1 skid control ECU (brake booster with master cylinder assembly)
  • No. 4 CAN junction connector
 DTC Output from
  • No. 2 skid control ECU (brake actuator assembly)
U1170-87 Lost Communication with Brake System Control Module (ch2) Missing Message Communication stops between the hybrid vehicle control ECU assembly or TCM and the No. 2 skid control ECU (brake actuator assembly).
  • CAN main/branch bus lines or connector
  • Hybrid vehicle control ECU assembly
  • TCM
  • No. 2 skid control ECU (brake actuator assembly)
  • No. 4 CAN junction connector
  • No. 14 CAN junction connector
 DTC Output from
  • Hybrid vehicle control ECU assembly
  • TCM
U11B7-00 Lost Communication with TCM (ch4) (System 2) Missing Message Communication stops between the hybrid vehicle control ECU assembly and the TCM.
  • CAN main/branch bus lines or connector
  • Hybrid vehicle control ECU assembly
  • TCM
  • No. 14 CAN junction connector
 DTC Output from
  • Hybrid vehicle control ECU assembly
U11B7-87 Lost Communication with TCM (ch4) Missing Message Communication stops between the hybrid vehicle control ECU assembly and the TCM.
  • CAN main/branch bus lines or connector
  • Hybrid vehicle control ECU assembly
  • TCM
  • No. 14 CAN junction connector
 DTC Output from
  • Hybrid vehicle control ECU assembly
U11BC-87 Lost Communication with Hybrid/EV Powertrain Control Module (ch6) Missing Message Communication stops between the hybrid vehicle control ECU assembly and the No. 2 skid control ECU (brake actuator assembly).
  • CAN main/branch bus lines or connector
  • Hybrid vehicle control ECU assembly
  • No. 2 skid control ECU (brake actuator assembly)
  • No. 4 CAN junction connector
  • No. 14 CAN junction connector
 DTC Output from
  • Hybrid vehicle control ECU assembly
U11BE-87 Lost Communication with ECM/PCM "A" (ch7) Missing Message Communication stops between the TCM and the ECM.
  • CAN main/branch bus lines or connector
  • TCM
  • ECM
  • No. 4 CAN junction connector
  • No. 14 CAN junction connector
 DTC Output from
  • TCM
scientia non olet · About LEMON Manuals