C2227

DTC C2227 EXCESSIVE TEMPERATURE OF BRAKE DISC

COMPONENT LOCATION:

GENERAL DESCRIPTION
BTCS Brake Traction Control System is operated when the value Wheel acceleration value speed difference value exceeds the specified value when vehicle speed is lower than the 50 Km/h.
The BTCS installed HECU calculates the DISC temperature logically, which is an assumed value, by using the value of Wheel speed, vehicle speed change, CONTROL MODE and BLS SIGNAL.
Assumed DISC Temperature is used to protect DISC overheating, caused by long-time operation, which may cause a decrease in brake efficiency

DTC DESCRIPTION
If the HECU decides that the Disc is over-heated (above 500 degrees C) then it turns the ESC lamp ON and inhibits BTCS operation to protect overheating of the disc.
If the calculated temperature becomes lower than specified value (approximately 300 degrees C) then the HECU turns the ESC lamp OFF and operates the BTCS again.

DTC DETECTING CONDITION:

COMPONENT CIRCUIT INSPECTION
1. Wait until the brake disc cool down sufficiently.
2. Ignition "OFF" Engine "OFF",
3. Ignition "ON" Engine "OFF".
4. Connect scan tool and select "Diagnostic Trouble Codes (DTCs)" mode
5. Using a scan tool, Clear DTC,
6. Select "Diagnostic Trouble Codes (DTCs)" mode again.
7. Are any DTCs present
YES
Substitute with a known-good HECU and check for proper operation.
If problem is corrected, replace HECU and then go to "Verification of Vehicle Repair" procedure.
NO
Fault is intermittent caused by faulty HECU or was repaired and HECU memory was not cleared.
The DTC code can be set by excessive TCS control in normal system status. Go to "Verification of Vehicle Repair" procedure.

VERIFICATION OF VEHICLE REPAIR
After a repair, it is essential to verify that the fault has been corrected.
1. Connect scan tool and select "Diagnostic Trouble Codes (DTCs)" mode
2. Using a scan tool, Clear DTC.
3. Operate the vehicle within DTC Detecting Condition in General Information.
4. Using a scan tool, Check DTC present.
5. Are any DTCs present
YES
Go to the applicable troubleshooting procedure.
NO
System performing to specification at this time.