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Home >> Toyota >> 2021 >> RAV4 Adventure >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (W/O Vacuum Brake Booster) - Diagnostic Codes (8 Of 8) & Symptom Tests >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster) >> DTC U0110-00: Lost Communication with Drive Motor Control Module "A"; DTC U0129-87: Lost Communication with Brake System Control Module "A" Missing Message; DTC U0293-00: Lost Communication with Hybrid/EV Powertrain Control Module; DTC U1106-00: Lost Communication with Electric Parking Brake Module; DTC U1150-00: Lost Communication with Hybrid Powertrain Control Module (ch2); DTC U117D-87: Lost Communication with Brake System Control Module (ch4) Missing Message; DTC U1492-57: Software incompatibility with Hybrid/EV Powertrain Control Module Invalid/Incompatible Software Component [12/2021 - ] >> Monitor Description
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Monitor Description

U0110 (Case 2), U0293 (Case 2) and U1150 (Case 2): 

  1. When a communication error with any ECU continues for a certain amount of time or communication is unstable (communication is invalid for a certain amount of time a certain amount of times), the No. 2 skid control ECU (brake actuator assembly) judges that communication with the respective ECU is abnormal and illuminates the MIL and stores a DTC

U0129: 

  1. When communication between the No. 1 skid control ECU (brake booster with master cylinder assembly) and No. 2 skid control ECU (brake actuator assembly) is not possible via Bus4 (C1-bus), the No. 2 skid control ECU (brake actuator assembly) judges that there is a CAN communication error, the MIL is illuminated and a DTC is stored.

U117D: 

  1. When communication between the No. 1 skid control ECU (brake booster with master cylinder assembly) and No. 2 skid control ECU (brake actuator assembly) is not possible via Bus2 (PL-bus), the No. 2 skid control ECU (brake actuator assembly) judges that there is a CAN communication error, the MIL is illuminated and a DTC is stored.
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