When the ECM detects an internal malfunction, DTC P057504 or P057549 is stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|
| P057504 | Cruise Control System Internal Failure | When the dynamic radar cruise control system is operating, the ECM detects a malfunction in the internal cancel circuit for 0.4 seconds or more. | ECM | Does not come on | Radar Cruise1 | A | SAE Code: P0575 |
| P057549 | Cruise Control Internal Electronic Failure | When the dynamic radar cruise control system is operating, the ECM detects a malfunction in the internal STP signal circuit for 0.2 seconds or more. | ECM | Does not come on | Radar Cruise1 | A | SAE Code: P0575 |
Before replacing the ECM, refer to Service Bulletin.
When the ECM is replaced, update the ECU security key.
Clear the DTCs.
| Proceed to |
|---|
| NEXT |
NEXT
Pre-procedure1
Make sure that the DTC detection conditions are met.
If the detection conditions are not met, the system cannot detect the malfunction.
Procedure1
Check for DTCs.
| Result | Proceed to |
|---|---|
| P057504 and P057549 are not output | A |
| P057504 or P057549 is output | B |
Post-procedure1
None
A
B