On Board Diagnosis Logic
- This self-diagnosis has the one trip detection logic.
- The MIL will not light up for this self-diagnosis. NOTE:
- If DTC P 1572 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to "DTC P0605 ECM ".
- This self-diagnosis has the one trip detection logic. When malfunction A is detected, DTC is not stored in ECM memory. And in that case, 1st trip DTC and 1st trip freeze frame data are displayed. 1st trip DTC is erased when ignition switch OFF. And even when malfunction A is detected in two consecutive trips, DTC is not stored in ECM memory.
DTC DETECTING CONDITION CHART
| DTC No. | Trouble Diagnosis Name | DTC Detecting Condition | Possible Cause | |
|---|---|---|---|---|
| P1572 1572 |
ASCD brake switch | A) | When the vehicle speed is above 30km/h (19 MPH), ON signals from the stop lamp switch and the ASCD brake switch are sent to ECM at the same time. |
|
| B) | ASCD brake switch signal is not sent to ECM for extremely long time while the vehicle is driving | |||