Lexus NX: Vehicle Speed Sensor (C1A45)

DESCRIPTION

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

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Note

C1A45

Vehicle Speed Sensor

A fail flag is transmitted from the skid control ECU.

  • Electronically controlled brake system
  • Blind spot monitor sensor LH
  • Blind spot monitor sensor RH

-

CAUTION / NOTICE / HINT

NOTICE:

When checking for DTCs, make sure that the blind spot monitor main switch (combination switch assembly) is on.

PROCEDURE

1.

CHECK DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)

(a) Check for electronically controlled brake system DTCs.

Click here

Chassis > ABS/VSC/TRC > Trouble Codes

OK:

Electronically controlled brake system DTCs are not output.

NG

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM

OK

2.

CHECK DTC

(a) Clear the DTCs.

Click here

Body Electrical > Blind Spot Monitor Master > Clear DTCs Body Electrical > Blind Spot Monitor Slave > Clear DTCs

(b) 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

DTC C1A45 is not output

A

DTC C1A45 is output from the blind spot monitor sensor LH (master)

B

DTC C1A45 is output from the blind spot monitor sensor RH (slave)

C

A

USE SIMULATION METHOD TO CHECK

B

REPLACE BLIND SPOT MONITOR SENSOR LH

C

REPLACE BLIND SPOT MONITOR SENSOR RH

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DESCRIPTION The blind spot monitor sensor receives steering angle signals from the steering sensor via CAN communication. DTC No. Detection Item DTC Detection Condition Trouble Area Note

 Short to +B in Outer Mirror Indicator(Master) (C1AB0)

DESCRIPTION This DTC is stored when the blind spot monitor sensor LH detects a +B short in the outer rear view mirror indicator LH. DTC No. Detection Item DTC Detection Condition Trouble Area

SEE MORE:

 Removal

REMOVAL PROCEDURE 1. REMOVE CONSOLE ARMREST ASSEMBLY Click here 2. REMOVE UPPER REAR CONSOLE PANEL Click here 3. REMOVE UPPER NO. 2 CONSOLE PANEL GARNISH Click here 4. REMOVE UPPER NO. 1 CONSOLE PANEL GARNISH Click here 5. REMOVE INSTRUMENT SIDE PANEL LH Click here 6. REMOVE NO. 1 INS

 Inspection

INSPECTION PROCEDURE 1. INSPECT REAR SPEAKER ASSEMBLY (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: for 8 Speakers Tester Connection Condition Specified Condition 1 - 2 Always 4 Ω for 10 Speakers Tester Connection Condition

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