STEP 3. Check the front impact sensor (LH).
(1) Check that the negative battery terminal is disconnected. If the negative battery terminal is connected, disconnect it.
(2) Alternate the right front impact sensor and left front impact sensor, and then install the alternated sensors.
(3) Connect the negative battery terminal.
(4) After erasing the diagnostic trouble code memory, check the diagnostic trouble code again.
(5) Disconnect the negative battery terminal.
Is diagnostic trouble code No. B1408 or B1409 set?
Replace the front impact sensor (LH) (Refer to ). Go to Step 4.