Dtc C1442 Invalid Data Received From Acceleration Sensor

Brake. Yaris. Ncp93, 131
Brake Control Dynamic Control Systems. Yaris. Ncp93, 131

DESCRIPTION

INSPECTION PROCEDURE

CHECK DTC

DTC C1442 Invalid Data Received from Acceleration Sensor

DTC C1443 Invalid Data Received from Yaw Rate Sensor


DESCRIPTION

The skid control ECU (brake actuator assembly) receives signals from the yaw rate and deceleration sensor (airbag sensor assembly) via the CAN communication system.

DTC No.
DTC Detection Condition
Trouble Area
C1442
Both of the following is condition is met.
  1. With the IG1 terminal voltage between 9.5 and 17.4 V.
  2. An invalid data signal is transmitted continuously from the acceleration sensor for 10 seconds or more.
Yaw rate and deceleration sensor (Airbag sensor assembly)
C1443
Both of the following is condition is met.
  1. With the IG1 terminal voltage between 9.5 and 17.4 V.
  2. An invalid data signal is transmitted continuously from the yaw rate and acceleration sensor for 10 seconds or more.

INSPECTION PROCEDURE

NOTICE:
When replacing the brake actuator assembly, perform zero point calibration (YARIS_NCP93 RM000000XHR078X.html).
1.CHECK DTC

  1. Clear the DTCs (YARIS_NCP93 RM000000XHV0CQX.html).

  1. Turn the ignition switch off.

  1. Start the engine and idle it for 60 seconds, and then stop the engine.

  1. Check if the same DTC is output (YARIS_NCP93 RM000000XHV0CQX.html).

    Result
    Result
    		Proceed to
    DTCs C1442 and C1443 are not output
    		A
    DTCs C1442 and/or C1443 are output
    		B



B
REPLACE YAW RATE AND DECELERATION SENSOR (AIRBAG SENSOR ASSEMBLY) (YARIS_NCP93 RM000000V6U02AX.html)
A

USE SIMULATION METHOD TO CHECK (YARIS_NCP93 RM000000UZ309WX.html)