DTC B1C53:13 [START STOP UNIT]


id0902p6021000

System malfunction location

Windshield wiper switch circuit malfunction

Detection condition
•  The start stop unit detects an open circuit, short to ground, or short to power supply in the windshield wiper switch circuit for 5 s or more with the ignition switched ON (engine off or on).
Fail-safe
Possible cause
•  Start stop unit configuration error
•  The installations of the light switch and the wiper and washer switch are reversed.
•  Windshield wiper switch malfunction
•  Start stop unit malfunction
System wiring diagram

Diagnostic Procedure

Step

Inspection

Action

1
PERFORM START STOP UNIT CONFIGURATION (AS-BUILT DATA USE)
•  Perform the start stop unit configuration using the M-MDS.
•  Clear start stop unit DTCs using the M-MDS.
•  Switch the INT volume switch to each step at 5 s intervals.
•  Perform the DTC inspection for the start stop unit using the M-MDS.
•  Is DTC B1C53:13 displayed?
Yes
Using the M-MDS, re-perform the start stop unit configuration using the As-Built data, then go to the next step.
No
Go to Step 5.
2
VERIFY IF INSTALLATIONS OF LIGHT SWITCH AND WIPER AND WASHER SWITCH ARE REVERSED
•  Verify the installation condition of the light switch and the wiper and washer switch.
•  Are the light switch and the wiper and washer switch installed correctly?
Yes
Go to the next step.
No
Install the light switch and the wiper and washer switch properly, then go to Step 4.
3
INSPECT WINDHIELD WIPER SWITCH
•  Inspect the windshield wiper switch.
•  Is the windshield wiper switch normal?
Yes
Go to the next step.
No
Replace the windshield wiper switch, then go to the next step.
4
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Clear start stop unit DTCs using the M-MDS.
•  Switch the INT volume switch to each step at 5 s intervals.
•  Perform the start stop unit DTC inspection using the M-MDS.
•  Is DTC B1C53:13 displayed?
Yes
Replace the start stop unit, then go to the next step.
No
Go to the next step.
5
VERIFY IF OTHER DTCs DISPLAYED
•  Are any other DTCs displayed?
Yes
Repair the malfunctioning part according to the applicable DTC troubleshooting.
No
DTC troubleshooting completed.