Code No.C1753: ACC/FCM Radar Blockage Detected


caution
  • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines.
  • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.

OPERATION



DIAGNOSIS CODE SET CONDITION




  • cruise control switch "ON" or FCM switch "ON"
  • The ACC/FCM-ECU' radar detection performance is deteriorated or its detection is interfered

PROBABLE CAUSES



  • The radar is contaminated by dirt or foreign material, etc.
  • Improperly installed ACC/FCM-ECU
  • Malfunction of ACC/FCM-ECU

DIAGNOSIS PROCEDURE

STEP 1. Check the radar for dirt or foreign material.
(1)Wipe off the dirt or foreign material from the ACC/FCM-ECU's radar.
(2)Erase the diagnosis code.
(3)Drive the vehicle for approx. five minutes.
(4)Check if the diagnosis code is set.

Q. Is diagnosis code No.C1753 set?
Go to Step 2
This diagnosis is complete(Protection is deactivated)

STEP 2. Check whether the ACCS/FCM-ECU is installed properly.
Check whether the ACC/FCM-ECU is installed correctly (Refer to ).

Q. Is the check result normal?
Go to Step 3
Reinstall the ACC/FCM-ECU correctly (Refer to ).

STEP 3. Check whether the diagnosis code is reset.

Q. Is diagnosis code No.C1753 set?
Replace the ACC/FCM-ECU (Refer to ).
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).