LANE-KEEP ASSIST SYSTEM OPERATES EVEN THOUGH LANE-KEEP ASSIST SYSTEM INDICATOR IS DISPLAYED [LANE-KEEP ASSIST SYSTEM]

id1503b4001200

Note
•  If there is any vehicle malfunction complaint lodged by a customer, first perform malfunction diagnosis according to the troubleshooting procedure. (See FOREWORD [LANE-KEEP ASSIST SYSTEM].)

Item
LANE-KEEP ASSIST SYSTEM OPERATES EVEN THOUGH LANE-KEEP ASSIST SYSTEM INDICATOR IS DISPLAYED
Description
—
Possible Causes
Note
•  The detection performance of the forward sensing camera (FSC) has limitations and the lane-keep assist system may not operate normally. For the detection performance limitations, refer to the [FORWARD SENSING CAMERA (FSC)] in the technical guide.
•  The forward sensing camera (FSC) operation record can be verified using the M-MDS.
•  LDWS switch malfunction
•  Instrument cluster malfunction
•  Forward sensing camera (FSC) malfunction

Diagnostic Procedure

Step

Inspection

Action
1
VERIFY DTCs
•  Using the M-MDS, display the DTCs related to the EPS control module, instrument cluster and forward sensing camera (FSC).
•  Are any DTCs displayed?
Yes
Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE [ELECTRIC POWER STEERING (EPS)].)
(See DTC TABLE [INSTRUMENT CLUSTER].)
(See DTC TABLE [FORWARD SENSING CAMERA (FSC)].)
No
Go to the next step.
2
INSPECT PHENOMENON DUE TO DETECTION PERFORMANCE LIMITATIONS
•  Refer to the new vehicle instruction and inspect the detection performance of the forward sensing camera (FSC).
•  Inspect the forward sensing camera (FSC) operation record using the M-MDS.
•  Are the applicable items for the detection performance displayed?
Yes
The vehicle is normal. (Explain to the customer that the lane-keep assist system may not operate due to the detection performance limitations of the forward sensing camera (FSC).)
Complete the symptom troubleshooting.
No
Go to the next step.
3
INSPECT LDWS SWITCH
•  Inspect the LDWS switch.
•  Is the LDWS switch normal?
Yes
Go to the next step.
No
Replace the cluster switch, then go to step 5.
(See CLUSTER SWITCH REMOVAL/INSTALLATION.)
4
INSPECT INSTRUMENT CLUSTER
•  Inspect the instrument cluster.
•  Is the instrument cluster normal?
Yes
Go to the next step.
No
Replace the instrument cluster, then go to the next step.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
5
VERIFY MALFUNCTION SYMPTOM
•  Has the malfunction symptom been eliminated?
Yes
Complete the symptom troubleshooting.(Explain repair contents to customer).
No
Repeat the diagnosis from Step 1.
If the malfunction has not been resolved, replace the forward sensing camera (FSC).
(See FORWARD SENSING CAMERA (FSC) REMOVAL/INSTALLATION.)