Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000001980U
Model Year Start: 2018 Model: Sienna Prod Date Range: [11/2017 -           ]
Title: PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM: C1A45; Vehicle Speed Sensor; 2018 - 2020 MY Sienna [11/2017 -        ]

DTC

C1A45

Vehicle Speed Sensor

DESCRIPTION

The blind spot monitor sensor receives vehicle speed signals from the skid control ECU via CAN communication.

DTC No.

DTC Detection Condition

Trouble Area

C1A45

A fail flag is transmitted from the skid control ECU.
  • Vehicle stability control system
  • Blind spot monitor sensor RH
  • Blind spot monitor sensor LH

CAUTION / NOTICE / HINT

NOTICE:

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

PROCEDURE

1.

CHECK OTHER DTC OUTPUT (VEHICLE STABILITY CONTROL SYSTEM)

(a) Check for DTCs of the vehicle stability control system (See page 2018 - 2020 MY Sienna [11/2017 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: DTC CHECK / CLEAR ).

OK:

Vehicle stability control system DTCs are not output.

NG

GO TO VEHICLE STABILITY CONTROL SYSTEM

OK

2.

CHECK DTC

(a) Clear the DTCs (See page 2018 - 2020 MY Sienna [11/2017 -        ]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM: DTC CHECK / CLEAR ).

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

Result

Result

Proceed to

No DTC is output

A

DTC is output from the blind spot monitor sensor RH (Master)

B

DTC is output from the blind spot monitor sensor LH (Slave)

C
A

USE SIMULATION METHOD TO CHECK

B

REPLACE BLIND SPOT MONITOR SENSOR RH

C

REPLACE BLIND SPOT MONITOR SENSOR LH