[ 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. C1772: ALIGNMENT SENSOR TOO FAR RIGHT
Code No. C1772: Alignment Sensor too Far Right
 
 
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
  • Ignition switch is "ON" position.
  • Radar calibration has been completed.
Judgement Criterion
  • The ACC/FCM-ECU detects an angle of 4 degrees or more in the right direction, which exceeds an automatic compensation limit.
noteA diagnosis code is not set as a historic fault.
 
 
PROBABLE CAUSES
  • Dirt or foreign material on the radar
  • Malfunction of wheel alignment
  • Distorted or deformed vehicle
  • Improperly installed ACC/FCM-ECU
  • Malfunction of ACC/FCM-ECU

 
 
DIAGNOSIS PROCEDURE
STEP 1. Check the vehicle status.
Ensure that the vehicle does not have the conditions to influence the vehicle posture, such as an overload, poor wheel alignment, distorted or deformed vehicle or flat tyre.
Is the check result normal?
Go to Step 2.
Repair. Then go to Step 4
 
STEP 2. Check the radar for dirt or foreign material.
Is the check result normal?
Go to Step 3.
Wipe off the dirt or foreign material from the ACC/FCM-ECU's radar. Then go to Step 4
 
STEP 3. M.U.T.-IIISE data list
Check the following data list (Refer to ).
  • Item No.69: Horizontal angle offset (Current)
Is the check result normal?
Go to Step 4.
Correct the installation angle of the ACC/FCM-ECU to reinstall it (Refer to ). Then go to Step 4.
 
STEP 4. ACC/FCM-ECU radar calibration
Perform calibration of ACC/FCM-ECU radar calibration (Refer to ).
Has the calibration succeeded?
Go to Step 5.
Carry out the procedure of diagnosis code detected at the failed radar calibration.
 
STEP 5. 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) Start the engine.
(3) Drive the vehicle for approximately 5 minutes.
(4) Check if the diagnosis code is set.
Is diagnosis code No.C1772 set?
Replace the ACC/FCM-ECU (Refer to ).
This diagnosis is complete.