Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM1000000018KEM
Model Year Start: 2018 Model: Sienna Prod Date Range: [11/2017 -           ]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: C1419,C1435; Acceleration Sensor Internal Circuit; 2018 - 2020 MY Sienna [11/2017 -        ]

DTC

C1419

Acceleration Sensor Internal Circuit

DTC

C1435

Yaw Rate Sensor Internal Circuit

DESCRIPTION

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

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

If there is a malfunction in the bus lines between the yaw rate and acceleration sensor and the CAN communication system, DTCs U0123 (Lost Communication with Yaw Rate Sensor Module) and U0124 (Lost Communication with Lateral Acceleration Sensor Module) are set.

These DTCs are also output when calibration has not been completed.

DTC Code

DTC Detection Condition

Trouble Area

C1419

A data malfunction signal is received from the acceleration sensor.

acceleration sensor (airbag sensor assembly)

C1435

A data malfunction signal is received from the yaw rate sensor.

Yaw rate sensor (airbag sensor assembly)

CAUTION / NOTICE / HINT

NOTICE:

When replacing the yaw rate and acceleration sensor, perform zero point calibration and store system information (See page 2018 - 2020 MY Sienna [11/2017 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: CALIBRATION ).

HINT:

When DTC U0124 is output together with DTC C1419 and/or C1435, inspect and repair the trouble areas indicated by DTC U0124 first (See page 2018 - 2020 MY Sienna [11/2017 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: U0073,U0100,U0124,U0126; Control Module Communication Bus OFF ).

PROCEDURE

1.

REPLACE AIRBAG SENSOR ASSEMBLY

(a) Replace the yaw rate and acceleration sensor (airbag sensor assembly) (See page 2016 - 2020 MY Sienna [12/2015 -        ]; SUPPLEMENTAL RESTRAINT SYSTEMS: CENTER AIRBAG SENSOR ASSEMBLY: REMOVAL ).

HINT:

If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step (See page 2018 - 2020 MY Sienna [11/2017 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: PROBLEM SYMPTOMS TABLE ).

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END