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Home >> Toyota >> 2022 >> Avalon XLE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Dynamic Radar Cruise Control System - Diagnostic Codes & Circuit Tests (Hybrid)) >> DYNAMIC RADAR CRUISE CONTROL SYSTEM (for HV Model) >> DTC U0122-87: Lost Communication with Vehicle Dynamics Control Module Missing Message; DTC U0293-87: Lost Communication With Hybrid Powertrain Control Module Missing Message; DTC U1104-87: Lost Communication with Driving Support ECU Missing Message [04/2018 - 08/2021] >> Description

DTC U0122-87: Lost Communication with Vehicle Dynamics Control Module Missing Message; DTC U0293-87: Lost Communication With Hybrid Powertrain Control Module Missing Message; DTC U1104-87: Lost Communication with Driving Support ECU Missing Message [04/2018 - 08/2021]: Description

WARNING: This page is about a different variant/trim than selected.

The Hybrid vehicle control ECU communicates with each sensor and ECU via CAN communication.

If any malfunction is detected in a CAN communication circuit, one or more CAN communication system DTCs are stored.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL
U0122-87 Lost Communication with Vehicle Dynamics Control Module Missing Message When the power switch is on (IG) and the dynamic radar cruise control system is operating, a communication error between the skid control ECU (brake booster with master cylinder assembly) and Hybrid vehicle control ECU is detected for approximately 2.6 seconds or more.
  • CAN communication system
  • Hybrid vehicle control ECU
  • skid control ECU (brake booster with master cylinder assembly)
Does not come on
U0293-87 Lost Communication With Hybrid Powertrain Control Module Missing Message While the vehicle speed is 5 km/h (3 mph) or more and the dynamic radar cruise control system is operating, the hybrid vehicle control ECU continuously receives a communication cut-off signal from the skid control ECU (brake booster with master cylinder assembly) for approximately 1 second or more.
  • CAN communication system
  • Hybrid vehicle control ECU
  • Skid control ECU (brake booster with master cylinder assembly)
Does not come on
U1104-87 Lost Communication with Driving Support ECU Missing Message While the vehicle speed is 5 km/h (3 mph) or more and the dynamic radar cruise control system is operating, a communication error between the driving support ECU assembly and Hybrid vehicle control ECU is detected for 1 second or more.
  • CAN communication system
  • Hybrid vehicle control ECU
  • Driving support ECU assembly
Does not come on