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Home >> Toyota >> 2025 >> RAV4 Plug-In Hybrid SE >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System - Diagnostic Codes (6 Of 6) & Circuit Tests (PHEV) >> Electronically Controlled Brake System >> DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0110-87: Lost Communication with Drive Motor Control Module "A" Missing Message; DTC U0125-87: Lost Communication with Multi-axis Acceleration Sensor Module Missing Message; DTC U0126-87: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0151-87: Lost Communication with Restraints Control Module Missing Message; DTC U025E-87: Lost Communication with Electronic Brake Booster Control Module "A" Missing Message; DTC U0293-87: Lost Communication with Hybrid/EV Powertrain Control Module Missing Message; DTC U1107-87: Lost Communication with Power Management Module Missing Message; DTC U111A-87: Lost Communication with ECM/PCM "A" (ch2) Missing Message; 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 [06/2020 - ] >> Description

DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0110-87: Lost Communication with Drive Motor Control Module "A" Missing Message; DTC U0125-87: Lost Communication with Multi-axis Acceleration Sensor Module Missing Message; DTC U0126-87: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0151-87: Lost Communication with Restraints Control Module Missing Message; DTC U025E-87: Lost Communication with Electronic Brake Booster Control Module "A" Missing Message; DTC U0293-87: Lost Communication with Hybrid/EV Powertrain Control Module Missing Message; DTC U1107-87: Lost Communication with Power Management Module Missing Message; DTC U111A-87: Lost Communication with ECM/PCM "A" (ch2) Missing Message; 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 [06/2020 - ]: Description

The airbag ECU assembly has a built-in acceleration sensor.

The No. 2 skid control ECU (brake actuator assembly) receives signals from the hybrid vehicle control ECU, steering sensor, certification ECU (smart key ECU assembly), hybrid motor control inverter assembly, No. 1 skid control ECU (brake booster with master cylinder assembly), airbag ECU assembly and ECM via CAN communication.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note
U0100-87 Lost Communication with ECM/PCM "A" Missing Message When terminal IG2 voltage is 10 V or more, data cannot be received from the ECM for 2 seconds or more.
  • CAN communication line
  • ECM
  • No. 2 skid control ECU (brake actuator assembly)
 Comes on
  • SAE Code: U0100
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)
U0110-87 Lost Communication with Drive Motor Control Module "A" Missing Message When terminal IG1 voltage is 10 V or more and IGP_PT2 signal is on, data cannot be received from the hybrid motor control inverter assembly for 2 seconds or more.
  • CAN communication line
  • Hybrid motor control inverter assembly
  • No. 2 skid control ECU (brake actuator assembly)
 Comes on
  • SAE Code: U0110 (Case 1)
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)
U0125-87 Lost Communication with Multi-axis Acceleration Sensor Module Missing Message Either of the following is detected:
  • When the +BS terminal voltage is between 9.5 and 17.4 V, data from the acceleration sensor cannot be received for 1 second or more.
  • When the +BS terminal voltage is between 9.5 and 17.4 V, the following occurs 10 times in succession within 60 seconds:
    • Data from the acceleration sensor cannot be received once or more within 5 seconds.
  • CAN communication line
  • Yaw rate and acceleration sensor (airbag ECU assembly)
  • No. 2 skid control ECU (brake actuator assembly)
 Comes on
  • SAE Code: U0125
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)
U0126-87 Lost Communication with Steering Angle Sensor Module Missing Message Either of the following is detected:
  • When the +BS terminal voltage is between 9.5 and 17.4 V, data from the steering sensor cannot be received for 1 second or more.
  • When the +BS terminal voltage is between 9.5 and 17.4 V, the following occurs 10 times in succession within 60 seconds:
    • Data from the steering sensor cannot be received once or more within 5 seconds
  • CAN communication line
  • Steering sensor
  • No. 2 skid control ECU (brake actuator assembly)
 Does not come on Output ECU: No. 2 skid control ECU (brake actuator assembly)
U0140-87 Lost Communication with Body Control Module Missing Message When terminal IG1 voltage is 10 V or more, data from the main body ECU cannot be received for 2 seconds or more.
  • CAN communication line
  • Main body ECU (multiplex network body ECU)
  • No. 2 skid control ECU (brake actuator assembly)
 Comes on
  • SAE Code: U0140
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)
U0151-87 Lost Communication with Restraints Control Module Missing Message When the +BS terminal voltage is between 9.5 and 17.4 V and the vehicle speed exceeds 7 km/h (4 mph), data cannot be received from the airbag ECU assembly for 5 seconds or more.
  • CAN communication line
  • Airbag ECU assembly
  • No. 2 skid control ECU (brake actuator assembly)
 Does not come on Output ECU: No. 2 skid control ECU (brake actuator assembly)
U025E-87 Lost Communication with Electronic Brake Booster Control Module "A" Missing Message When the voltage at terminal IG1 is 10 V or more, 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 for 2 seconds or more.
  • CAN communication line
  • No. 1 skid control ECU (brake booster with master cylinder assembly)
  • No. 2 skid control ECU (brake actuator assembly)
 Comes on
  • SAE Code: U025E
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)
U0293-87 Lost Communication with Hybrid/EV Powertrain Control Module Missing Message When terminal IG1 voltage is 10 V or more and IGP_PT2 signal is on, data from the hybrid vehicle control ECU cannot be received for 2 seconds or more.
  • CAN communication line
  • Hybrid vehicle control ECU
  • No. 2 skid control ECU (brake actuator assembly)
 Comes on
  • SAE Code: U0293 (Case 1)
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)
U1107-87 Lost Communication with Power Management Module Missing Message When the voltage at terminal IG1 is 10 V or more, the certification ECU (smart key ECU assembly) cannot communicate for 3 seconds or more.
  • CAN communication line
  • Certification ECU (smart key ECU assembly)
  • No. 2 skid control ECU (brake actuator assembly)
 Comes on
  • SAE Code: U1107
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)
U111A-87 Lost Communication with ECM/PCM "A" (ch2) Missing Message When terminal IG2 voltage is 10 V or more, data cannot be received from the ECM for 2 seconds or more.
  • CAN communication line
  • ECM
  • No. 2 skid control ECU (brake actuator assembly)
 Comes on
  • SAE Code: U111A
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)
U1150-87 Lost Communication with Hybrid Powertrain Control Module (ch2) Missing Message When terminal IG1 voltage is 10 V or more and IGP_PT2 signal is on, data from the hybrid vehicle control ECU cannot be received for 2 seconds or more.
  • CAN communication line
  • Hybrid vehicle control ECU
  • No. 2 skid control ECU (brake actuator assembly)
 Comes on
  • SAE Code: U1150 (Case 1)
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)
U1159-87 Lost Communication with Electronic Brake Booster Control Module "A" (ch3) Missing Message When the voltage at terminal IG1 is 10 V or more, 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 for 2 seconds or more.
  • CAN communication line
  • No. 1 skid control ECU (brake booster with master cylinder assembly)
  • No. 2 skid control ECU (brake actuator assembly)
 Does not come on Output ECU: No. 2 skid control ECU (brake actuator assembly)
U0125-87 DTC DETECTION CONDITIONS

  Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition - - -
Malfunction Status When the +BS terminal voltage is between 9.5 and 17.4 V, data from the acceleration sensor cannot be received ◦ -
When the +BS terminal voltage is between 9.5 and 17.4 V, the following occurs:
- Data from the acceleration sensor cannot be received once or more within 5 seconds		 - ◦
Detection Time 1 second or more. 10 times in succession within 60 seconds.
Number of Trips 1 trip 1 trip

HINT: 

DTC will be output when conditions for either of the patterns in the table above are met.

U0126-87 DTC DETECTION CONDITIONS

  Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition - - -
Malfunction Status When the +BS terminal voltage is between 9.5 and 17.4 V, data from the steering sensor cannot be received ◦ -
When the +BS terminal voltage is between 9.5 and 17.4 V, the following occurs:
- Data from the steering sensor cannot be received once or more within 5 seconds		 - ◦
Detection Time 1 second or more. 10 times in succession within 60 seconds.
Number of Trips 1 trip 1 trip

HINT: 

DTC will be output when conditions for either of the patterns in the table above are met.

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