DTC U0452:4A [FORWARD SENSING CAMERA (FSC)]
id1502a3004300
|
Description |
SAS control module serial number mismatch |
|---|---|
|
Detection condition
|
• The forward sensing camera (FSC) detects that the SAS control module serial number has changed.
|
|
Fail-safe
|
• Inhibits the lane departure warning system (LDWS).
• Inhibits the lane-keep assist system.
• Inhibits the high beam control (HBC) system.
• Inhibits the adaptive LED headlights.
• Inhibits the advanced smart city brake support (advanced SCBS) or smart city brake support [forward] (SCBS F).
|
|
Possible cause
|
• SAS control module is replaced.
• DTCs are stored in the SAS control module.
• SAS control module malfunction
• Forward sensing camera (FSC) malfunction
|
|
System wiring diagram
|
Not applicable
|
Diagnostic Procedure
|
Step |
Inspection |
Action |
|
|---|---|---|---|
|
1
|
VERIFY IF SAS CONTROL MODULE WAS REPLACED
• Verify if the SAS control module was replaced.
• Was the SAS control module replaced?
|
Yes
|
Go to the next step.
|
|
No
|
Go to Step 3.
|
||
|
2
|
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 (LOCK), 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?
|
Yes
|
Go to the next step.
|
|
No
|
Go to Step 6.
|
||
|
3
|
VERIFY SAS CONTROL MODULE DTCs
• Retrieve the SAS control module DTCs using the M-MDS.
• Are any DTCs displayed?
|
Yes
|
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
|
|
No
|
Go to the next step.
|
||
|
4
|
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?
|
Yes
|
Replace the SAS control module, then go to the next step.
|
|
No
|
Go to Step 6.
|
||
|
5
|
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?
|
Yes
|
Replace the forward sensing camera (FSC), then go to the next step.
|
|
No
|
Go to the next step.
|
||
|
6
|
VERIFY IF OTHER DTCs DISPLAYED
• Are any other DTCs displayed?
|
Yes
|
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
|
|
No
|
DTC troubleshooting completed.
|
||