Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001EACT
Model Year Start: 2019 Model: RAV4 Prod Date Range: [11/2018 - 02/2019]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): C1442,C1443; Invalid Data Received from Deceleration Sensor; 2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]

DTC

C1442

Invalid Data Received from Deceleration Sensor

DTC

C1443

Invalid Data Received from Yaw Rate Sensor

DESCRIPTION

The skid control ECU (brake booster with master cylinder assembly) receives signals from the yaw rate and acceleration sensor (airbag ECU assembly) via the CAN communication system.

The airbag ECU assembly has a built-in yaw rate and acceleration sensor and detects the vehicle condition.

DTC No.

Detection Item

INF Code

DTC Detection Condition

Trouble Area

Note

C1442

Invalid Data Received from Deceleration Sensor

572

With terminal IG1 voltage between 9.5 V higher than, an invalid data signal is received from the acceleration sensor for 10 seconds or more.

Acceleration sensor (Airbag ECU assembly)

-

C1443

Invalid Data Received from Yaw Rate Sensor

715

With terminal IG1 voltage between 9.5 V higher than, an invalid data signal is received from the yaw rate sensor for 10 seconds or more.

Yaw rate sensor (Airbag ECU assembly)

-

CAUTION / NOTICE / HINT

NOTICE:

When replacing the yaw rate and acceleration sensor (airbag ECU assembly), perform zero point calibration.

Click here 2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): UTILITY

PROCEDURE

1.

CHECK DTC

(a) Clear the DTCs.

Click here 2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): DTC CHECK / CLEAR

Chassis > ABS/VSC/TRAC > Clear DTCs

(b) Turn the power switch off.

(c) Check if the same DTC is output.

Click here 2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): DTC CHECK / CLEAR

Chassis > ABS/VSC/TRAC > Trouble Codes

Result

Proceed to

DTCs C1442 and C1443 are not output.

A

DTCs C1442 and/or C1443 are output.

B

A

USE SIMULATION METHOD TO CHECK

B

REPLACE AIRBAG ECU ASSEMBLY