[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
17 -ENGINE AND EMISSION CONTROL > ADAPTIVE CRUISE CONTROL SYSTEM (ACC) > DIAGNOSIS CODE PROCEDURES > CODE NO. C1770: RADAR CALIBRATION FAIL (LOWER)
Code No. C1770: Radar Calibration Failure (Lower)
 
 
cautionWhen the ACC/FCM-ECU is replaced, calibrate the radar (refer to ).
 
 
OPERATION
ACC/FCM-ECU monitors the radar calibration.
 
 
DIAGNOSIS CODE SET CONDITION
Check Conditions and judgement Criterion
  • Ignition switch is "ON" position.
  • The radar calibration is performed while the ACC/FCM-ECU is tilted by 4 degrees or more to the right.
noteA diagnosis code is not set as a historic fault.
 
 
PROBABLE CAUSES
  • Dirt or foreign material on the radar
  • Improperly installed ACC/FCM-ECU
  • Malfunction of ACC/FCM-ECU
  • Malfunction of wheel alignment

 
 
DIAGNOSIS PROCEDURE
STEP 1. Check the radar for dirt or foreign material.
Is the check result normal?
Go to Step 2.
Wipe off the dirt or foreign material from the ACC/FCM-ECU's radar. Then go to Step 3.
 
STEP 2. M.U.T.-IIISE data list
Check the following data list (Refer to ).
  • Item No.70: Vertical angle offset (Service)
Is the check result normal?
Replace the ACC/FCM-ECU (Refer to ).
Correct the installation angle of the ACC/FCM-ECU to reinstall it (Refer to ). Then go to Step 3.
 
STEP 3. ACC/FCM-ECU radar calibration
Perform calibration of ACC/FCM-ECU radar calibration (Refer to ).
Has the calibration succeeded?
Go to Step 4.
Go to Step 2.
 
STEP 4. Check whether the diagnosis code is set again.
Check again if the diagnosis code is set in the ACC/FCM-ECU.
(1) Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(2) Check that the diagnosis code is set again.
Is diagnosis code No.C1770 set?
Replace the ACC/FCM-ECU (Refer to ).
This diagnosis is complete.