Inspection Procedure 5: Although any vehicle is present within a detection area, the blind spot warning light on door mirror does not illuminate. (the system is on): Diagnosis
- STEP 1. Check the rear bumper, BSW-ECU and their surrounding for contamination or foreign material.
Visually check the rear bumper, BSW-ECU and their surrounding for contamination or foreign material.
Q: Is the check result normal?
YES : Go to Step 2.
NO : Remove and clean the blockage or foreign material.
- STEP 2. Check the rear bumper for scratches or dents.
Visually check the rear bumper for scratches or dents.
Q: Is the DTC set?
YES : Go to Step 3.
NO : Replace the Rear bumper assembly (Refer to REMOVAL AND INSTALLATION ).
- STEP 3. Check whether the BSW-ECUs (master/slave) are installed in right angle.
Refer to BSW-ECU .
OK: -3° - +3°
Q: Is the check result normal?
YES : Go to Step 4.
NO : Replace the bracket of the BSW-ECU, which installation angle is not within the permissible angle above.
- STEP 4. Retest the system
Drive the vehicle for approx. 10 minutes. Then check that the BSW works normally.
Q: Is the check result normal?
YES : Explain the customer that this system does not work under certain road conditions or ambient environments.
NO : Replace the BSW-ECU, which corresponds to a defective blind spot warning light.