DTC U0420:68 [BLIND SPOT MONITORING (BSM)]
id0902i3018300
|
Description |
Error signal received from EPS control module |
|---|---|
|
Detection condition
|
• BSM control module receives the error signal from the EPS control module for 1 s or more.
|
|
Fail-safe function
|
• Blind spot monitoring (BSM) system is stopped.
|
|
Possible cause
|
• DTCs are stored in the EPS control module.
• EPS control module malfunction
• BSM control module malfunction
|
|
System wiring diagram
|
Not applicable
|
Diagnostic Procedure
|
Step |
Inspection |
Action |
|
|---|---|---|---|
|
1
|
VERIFY EPS CONTROL MODULE DTCs
• Retrieve the EPS 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.
|
||
|
2
|
PERFORM DTC INSPECTION AND VERIFY EPS CONTROL MODULE MALFUNCTION
• Clear the DTC for the BSM control module using the M-MDS.
• Switch the ignition ON (engine off or on) and wait for 1 s or more.
• Retrieve the BSM control module DTCs using the M-MDS.
• Is the same DTC displayed?
|
Yes
|
Replace the EPS control module, then go to the next step.
|
|
No
|
Go to Step 4.
|
||
|
3
|
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
• Clear the DTC for the BSM control module using the M-MDS.
• Switch the ignition ON (engine off or on) and wait for 1 s or more.
• Retrieve the BSM control module DTCs using the M-MDS.
• Is the same DTC displayed?
|
Yes
|
Repeat the inspection from Step 1.
• If the malfunction recurs, replace the BSM control module.
Go to the next step.
|
|
No
|
Go to the next step.
|
||
|
4
|
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.
|
||