Description

Poor functioning of forward sensing camera (FSC)

Detection condition

• With the LDWS switch on or the high beam control (HBC) system operating, the forward sensing camera (FSC) detects that its field of view is poor for a certain period of time.

Fail-safe

• Inhibits the lane departure warning system (LDWS).

• Inhibits the high beam control (HBC) system.

Possible cause

• Windshield fogging

• Forward sensing camera (FSC) lens fogging

• Forward sensing camera (FSC) malfunction

• Heavy rain, dense fog, snow, backlight

• No traffic lane lines or traffic lane lines are faded/patchy

System wiring diagram

Not applicable

Step

Inspection

Action

1

• Verify if the windshield is fogged.

• Is the windshield fogged?

Yes

Use the defroster to clear the fogging from the windshield, then go to Step 3.

No

Go to the next step.

2

• Verify if there is any fogging on the forward sensing camera (FSC) lens.

• Is the forward sensing camera (FSC) lens fogged?

Yes

Use the defroster to clear the fogging on the forward sensing camera (FSC) lens, then go to the next step.

No

Go to the next step.

3

• Clear the DTC for the forward sensing camera (FSC) using the M-MDS.

  (See CLEARING DTC [FORWARD SENSING CAMERA (FSC)].)

• Drive the vehicle at 20 km/h or more for 3 min or more with the LDWS switch on.

• Retrieve the forward sensing camera (FSC) DTCs using the M-MDS.

  (See DTC INSPECTION [FORWARD SENSING CAMERA (FSC)].)

• Is the same DTC displayed?

Yes

Repeat the inspection from Step 1.

• If the malfunction recurs, replace the forward sensing camera (FSC).

  (See FORWARD SENSING CAMERA (FSC) REMOVAL/INSTALLATION.)

Go to the next step.

No

Go to the next step.

4

• Are any other DTCs displayed?

Yes

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

(See DTC TABLE [FORWARD SENSING CAMERA (FSC)].)

No

DTC troubleshooting completed.