Lexus ES manuals

Lexus ES: Vehicle Speed Sensor (C1A45)

DESCRIPTION

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

Blind Spot Monitor Master

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1A45

Vehicle Speed Sensor

A fail flag is transmitted from the skid control ECU

  • Electronically controlled brake system
  • Blind spot monitor sensor RH
Blind Spot Monitor Slave

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1A45

Vehicle Speed Sensor

A fail flag is transmitted from the skid control ECU

  • 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

OK

2.

CHECK 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 C1A45 is output ("Blind Spot Monitor Master")

B

DTC C1A45 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

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