Description

Laser sensor malfunction

Detection condition

• The instrument cluster detects any of the following error signals:

• Laser sensor error signal

• Smart city brake support related system (laser sensor, DSC HU/CM, PCM) error signal

Fail-safe function

• Inhibits the smart city brake support control.

• Warning message related to the smart city brake support is displayed in the LCD (Instrument cluster (type A)).

Possible cause

• System related to the smart city brake support stores DTCs.

• Laser sensor malfunction

System wiring diagram

Not applicable

Step

Inspection

Action

1

• Switch the ignition off.

• Switch the ignition ON (engine off or on) and wait for 10 s or more.

• Perform a CMDTC self-test using the M-MDS.

  (See DTC INSPECTION [INSTRUMENT CLUSTER].)

• Are any DTCs other than DTC B11D4:53?

Yes

Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.

No

Go to the next step.

2

• Clear the DTC for the instrument cluster using the M-MDS.

  (See CLEARING DTC [INSTRUMENT CLUSTER].)

• Switch the ignition ON (engine off or on) and wait for 10 s or more.

• Perform a CMDTC self-test using the M-MDS.

  (See DTC INSPECTION [INSTRUMENT CLUSTER].)

• Is the same DTC displayed?

Yes

Repeat the inspection from Step 1.

• If the malfunction recurs, replace the laser sensor.

  (See LASER SENSOR REMOVAL/INSTALLATION.)

Go to the next step.

No

Go to the next step.

3

• Are any other DTCs displayed?

Yes

Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.

(See DTC TABLE [INSTRUMENT CLUSTER].)

No

DTC troubleshooting completed.