Code No.P1769: Stop Lamp Switch System


OPERATION



DIAGNOSIS CODE SET CONDITIONS



PROBABLE CAUSES



  • Malfunction of stop lamp switch
  • Damaged harness wires and connectors
  • Malfunction of the A/T-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics
Use M.U.T.-III to perform the CAN bus diagnosis.

Q. Is the check result normal?
Go to Step 2.
Repair the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnosis Table ).

STEP 2. M.U.T.-III data list
Item 19: Stop lamp switch (Refer to Data List Table ).

Q. Is the check result normal?
Go to Step 3.
Stop lamp switch system check (Refer to GROUP 35B, Troubleshooting - Diagnosis Code Chart ).

STEP 3. Symptom recheck after erasing diagnosis code

Q. Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
Replace A/T-ECU.