DTC U0452:4A [FORWARD SENSING CAMERA (FSC)]
id1502a3004300
Forward Sensing Camera (FSC) Type B (VIN Serial No. 200001—)
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Description |
SAS control module serial number mismatch |
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Detection condition
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• The forward sensing camera (FSC) detects that the SAS control module serial number has changed.
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Fail-safe
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• Inhibits the lane departure warning system (LDWS).
• Inhibits the lane-keep assist system.
• Inhibits the adaptive LED headlights.
• Inhibits the high beam control (HBC) system.
• Inhibits the advanced smart city brake support (advanced SCBS).
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Possible cause
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• SAS control module is replaced.
• DTCs are stored in the SAS control module.
• SAS control module malfunction
• Forward sensing camera (FSC) malfunction
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System wiring diagram
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Not applicable
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Diagnostic Procedure
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Step |
Inspection |
Action |
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1
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VERIFY IF SAS CONTROL MODULE WAS REPLACED
• Verify if the SAS control module was replaced.
• Was the SAS control module replaced?
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Yes
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Go to the next step.
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No
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Go to Step 3.
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2
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VERIFY IF MALFUNCTIONING LOCATION IS SAS CONTROL MODULE DEPENDING ON REPEATABILITY
• Park the vehicle on level ground, and then switch the ignition ON (engine off or on) and wait 5 s or more with the vehicle in an unloaded condition.
• Switch the ignition ON (engine on) and move the vehicle forward a few meters.
• After switching the ignition off, switch the ignition ON (engine off or on) again.
• Clear the DTC for the forward sensing camera (FSC) using the M-MDS.
• Switch the ignition ON (engine off or on) and wait for 1.5 s or more.
• Retrieve the forward sensing camera (FSC) DTCs using the M-MDS.
• Is the same DTC displayed?
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Yes
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Go to the next step.
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No
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Go to Step 6.
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3
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VERIFY SAS CONTROL MODULE DTCs
• Retrieve the SAS control module DTCs using the M-MDS.
• Are any DTCs displayed?
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Yes
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Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
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No
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Go to the next step.
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4
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VERIFY IF MALFUNCTIONING LOCATION IS SAS CONTROL MODULE DEPENDING ON REPEATABILITY
• Clear the DTC for the forward sensing camera (FSC) using the M-MDS.
• Switch the ignition ON (engine off or on) and wait for 1.5 s or more.
• Retrieve the forward sensing camera (FSC) DTCs using the M-MDS.
• Is the same DTC displayed?
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Yes
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Replace the SAS control module, then go to the next step.
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No
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Go to Step 6.
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5
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VERIFY THAT REPAIRS HAVE BEEN COMPLETED
• Clear the DTC for the forward sensing camera (FSC) using the M-MDS.
• Switch the ignition ON (engine off or on) and wait for 1.5 s or more.
• Retrieve the forward sensing camera (FSC) DTCs using the M-MDS.
• Is the same DTC displayed?
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Yes
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Replace the forward sensing camera (FSC), then go to the next step.
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No
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Go to the next step.
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6
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VERIFY IF OTHER DTCs DISPLAYED
• Are any other DTCs displayed?
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Yes
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Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
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No
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DTC troubleshooting completed.
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