Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001BX3G
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 -           ]
Title: PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM(for HV Model): C1A46; Yaw Rate Sensor; 2019 - 2022 MY Avalon HV [04/2018 -        ]

DTC

C1A46

Yaw Rate Sensor

DESCRIPTION

The blind spot monitor sensor receives yaw rate signals from the airbag sensor assembly (yaw rate and acceleration sensor) via CAN communication.

Blind Spot Monitor Master

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1A46

Yaw Rate Sensor

A fail flag is transmitted from the airbag sensor assembly
  • Electronically controlled brake system
  • Blind spot monitor sensor RH

Blind Spot Monitor Slave

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1A46

Yaw Rate Sensor

A fail flag is transmitted from the airbag sensor assembly
  • Electronically controlled brake system
  • Blind spot monitor sensor LH

CAUTION / NOTICE / HINT

NOTICE:

When checking for DTCs, make sure that the blind spot monitor system is turned on.

PROCEDURE

1.

CHECK OTHER DTC OUTPUT (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)

(a) Turn the power switch off.

(b) Connect the Techstream to the DLC3.

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

(d) Turn the Techstream on.

(e) Read the DTCs following the prompts on the Techstream. Enter the following menus: Chassis / ABS/VSC/TRAC / Trouble Codes.

Chassis > ABS/VSC/TRAC > Trouble Codes

OK:

Electronically controlled brake system DTCs are not output.

NG

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM 2019 MY Avalon HV [04/2018 - 08/2019]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model): DIAGNOSTIC TROUBLE CODE CHART 2020 MY Avalon HV [08/2019 - 08/2020]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model): DIAGNOSTIC TROUBLE CODE CHART 2021 MY Avalon HV [08/2020 - 08/2021]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model): DIAGNOSTIC TROUBLE CODE CHART 2022 MY Avalon HV [08/2021 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model): DIAGNOSTIC TROUBLE CODE CHART

OK

2.

RECHECK DTC

(a) Turn the power switch off.

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

(c) Recheck for DTCs and check if the same DTC is output again.

Body Electrical > Blind Spot Monitor Master > Trouble Codes

Body Electrical > Blind Spot Monitor Slave > Trouble Codes

Result

Proceed to

No DTCs are output.

A

DTC C1A46 is output ("Blind Spot Monitor Master").

B

DTC C1A46 is output ("Blind Spot Monitor Slave").

C
A

USE SIMULATION METHOD TO CHECK

B

REPLACE BLIND SPOT MONITOR SENSOR RH

C

REPLACE BLIND SPOT MONITOR SENSOR LH