Code No.C1752: ACC/FCM Radar Temperature out of Range
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
The ACC/FCM-ECU monitors temperature at the radar.
DIAGNOSIS CODE SET CONDITION
This diagnosis code is set when the abnormality below is detected:
- cruise control switch "ON" or FCM switch "ON"
- Control is cancelled in order to protect the ACC/FCM-ECU.
- The temperature which the ACC/FCM-ECU detects at the radar is below -30°C or over 95°C.
PROBABLE CAUSES
- The ACC/FCM-ECU remains protected.
- Severe driving condition (e.g. driving under high load)
- Malfunction of ACC/FCM-ECU
|
STEP 1. Check the radar temperature (high or low).
|
|
(1)Turn the ignition switch to "LOCK" (OFF) position and then wait for a while so that the radar at the ACC/FCM-ECU remains at appropriate temperature.
|
|
(2)Erase the diagnosis code.
|
|
(3)Check if the diagnosis code is set.
|
|
Q.
Is diagnosis code No.C1752 set?
|
|
Go to Step 2
|
|
|
|
This diagnosis is complete(Protection is deactivated)
|
|
|
|
STEP 2. M.U.T.-III data list
|
|
Check the following data list (Refer to ).
|
|
- Item No.02: Radar temperature
|
|
Q.
Is the check result normal?
|
|
Intermittent malfunction (Refer to GROUP 00 -
How to Cope with Intermittent Malfunction ).
|
|
|
|
Replace the ACC/FCM-ECU (Refer to ).
|
|
|