Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM1000000014VLZ
Model Year Start: 2018 Model: Camry HV Prod Date Range: [07/2017 - 09/2018]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: U0073,U0110,U0120,U0124,U0126,U0128,U0151,U0293; Control Module Communication Bus Off; 2018 MY Camry HV [07/2017 - 09/2018]

DTC

U0073

Control Module Communication Bus Off

DTC

U0110

Lost Communication with Drive Motor Control Module "A"

DTC

U0120

Lost Communication With Starter / Generator Control Module

DTC

U0124

Lost Communication With Lateral Acceleration Sensor Module

DTC

U0126

Lost Communication With Steering Angle Sensor Module

DTC

U0128

Lost Communication With EPB Module

DTC

U0151

Lost Communication With Restraints Control Module

DTC

U0293

Lost Communication with Hybrid Vehicle Control System

DESCRIPTION

The airbag sensor assembly has a built-in yaw rate and acceleration sensor and detects the vehicle condition using 2 circuits (GL1, GL2).

The skid control ECU (brake booster with master cylinder assembly) receives signals from the hybrid vehicle control ECU assembly, steering angle sensor, certification ECU (smart key ECU assembly), inverter with converter assembly, parking brake ECU (brake actuator assembly), airbag sensor assembly and yaw rate and acceleration sensor (airbag sensor assembly) via CAN communication.

DTC No.

Detection Item

INF Code

DTC Detection Condition

Trouble Area

Note

U0073

Control Module Communication Bus Off

461

462

463
  • INF Code: 461
    • Either of the following is detected:
      1. Yaw rate and acceleration sensor communication is disabled for 1 second or more.
      2. Yaw rate and acceleration sensor communication is disabled once or more per 5 seconds 10 times or more within 60 seconds.
  • INF Code: 462
    • Either of the following is detected:
      1. Steering angle sensor communication is disabled for 1 second or more.
      2. Steering angle sensor communication is disabled once or more per 5 seconds 10 times or more within 60 seconds.
  • INF Code: 463
    • Bus off occurs once or more per 0.1 seconds 10 times repeatedly.
  • INF Code: 461
    • CAN communication line
    • Yaw rate and acceleration sensor (airbag sensor assembly)
    • Skid control ECU (brake booster with master cylinder assembly)
  • INF Code: 462
    • CAN communication line
    • Steering angle sensor
    • Skid control ECU (brake booster with master cylinder assembly)
  • INF Code: 463
    • CAN communication line
    • Skid control ECU (brake booster with master cylinder assembly)

Electronically controlled brake system DTC

U0110

Lost Communication with Drive Motor Control Module "A"

1153

1154
  • INF Code: 1153
    • When terminal IG2 voltage is 9.5 V or more, data from the inverter with converter assembly cannot be received for 2 seconds or more.
  • INF Code: 1154
    • When terminal IG2 voltage is 9.5 V or more, the condition in which data from the inverter with converter assembly cannot be received once or more within 5 seconds occurs 10 times in succession.
  • CAN communication line
  • Inverter with converter assembly
  • Skid control ECU (brake booster with master cylinder assembly)

Electronically controlled brake system DTC

U0120

Lost Communication With Starter / Generator Control Module

1158

Push start switch data is invalid for 3 seconds or more.
  • CAN communication line
  • Certification ECU (smart key ECU assembly)
  • Skid control ECU (brake booster with master cylinder assembly)

Electronically controlled brake system DTC

U0124

Lost Communication With Lateral Acceleration Sensor Module

591

592
  • INF Code: 591
    • Acceleration sensor communication is disabled for 1 second or more.
  • INF Code: 592
    • Acceleration sensor communication is disabled once or more per 5 seconds 10 times or more within 60 seconds.
  • CAN communication line
  • Acceleration sensor (airbag sensor assembly)
  • Skid control ECU (brake booster with master cylinder assembly)

ABS DTC

U0126

Lost Communication With Steering Angle Sensor Module

741

742
  • INF Code: 741
    • Steering angle sensor communication is disabled for 1 second or more.
  • INF Code: 742
    • Steering angle sensor communication is disabled once or more per 5 seconds 10 times or more within 60 seconds.
  • CAN communication line
  • Steering angle sensor
  • Skid control ECU (brake booster with master cylinder assembly)

VSC DTC

U0128

Lost Communication With EPB Module

425

With terminal IG1 voltage at 10 V or more, data cannot be received from the parking brake ECU (brake actuator assembly) for 1 second or more.
  • CAN communication line
  • Parking brake ECU (brake actuator assembly)
  • Skid control ECU (brake booster with master cylinder assembly)

Brake hold DTC

HINT:

EPB: Electric Parking Brake System

U0151

Lost Communication With Restraints Control Module

450

When terminal IG2 voltage is 9.5 V or more, data from the airbag sensor assembly cannot be received for 5 seconds or more.
  • CAN communication line
  • Airbag sensor assembly
  • Skid control ECU (brake booster with master cylinder assembly)

Secondary collision brake DTC

U0293

Lost Communication with Hybrid Vehicle Control System

411

412

413
  • INF Code: 411, 413
    • When terminal IG2 voltage is 9.5 V or more, data from the hybrid vehicle control ECU assembly cannot be received for 2 seconds or more.
  • INF Code: 412
    • When terminal IG2 voltage is 9.5 V or more, the condition in which data from the hybrid vehicle control ECU assembly cannot be received once or more within 5 seconds occurs 10 times in succession.
  • CAN communication line
  • Hybrid vehicle control ECU assembly
  • Skid control ECU (brake booster with master cylinder assembly)

Electronically controlled brake system DTC

DTC Detection Conditions: U0073 INF Code: 461

 

Vehicle Condition

Pattern 1

Pattern 2

Diagnosis Condition

-

-

-

Malfunction Status

Yaw rate and acceleration sensor communication is disabled.

○

-

Communication with the yaw rate and acceleration sensor is invalid once or more within 5 seconds.

-

○

Detection Time

1 second or more

Occurs 10 times or more 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.

DTC Detection Conditions: U0073 INF Code: 462

 

Vehicle Condition

Pattern 1

Pattern 2

Diagnosis Condition

-

-

-

Malfunction Status

Steering angle sensor communication is disabled.

○

-

Communication with the steering angle sensor is invalid once or more within 5 seconds.

-

○

Detection Time

1 second or more

Occurs 10 times or more 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.

PROCEDURE

1.

CHECK DTC (HEALTH CHECK)

(a) Clear the DTCs.

Chassis > ABS/VSC/TRAC > Clear DTCs

(b) Turn the power switch off.

(c) Turn the power switch on (IG).

(d) Enter the following menus: System Select / Health Check.

(e) Check for DTCs.

Result

Proceed to

DTCs for related systems are output together with DTC U0073, U0110, U0120, U0124, U0126, U0128, U0151 or U0293.

A

DTC U0073, U0110, U0120, U0124, U0126, U0128, U0151 or U0293 is output.

B

DTCs are not output.

C
A

GO TO DIAGNOSTIC TROUBLE CODE CHART (RELATED SYSTEM)
B

INSPECT CAN COMMUNICATION SYSTEM

C

USE SIMULATION METHOD TO CHECK