DTC Detection Logic
WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- If DTC P1572 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to DTC LOGIC .
- 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 is turned OFF. And even when malfunction A is detected in two consecutive trips, DTC is not stored in ECM memory.
| DTC No. | Trouble diagnosis name (Trouble diagnosis content) |
DTC detecting condition | Possible cause | |
|---|---|---|---|---|
| P1572 | ASCD BRAKE SW (ICC brake switch) |
A) | ON signals from the stop lamp switch and the brake pedal position switch (ICC brake switch) are sent to ECM at the same time. |
|
| B) | Brake pedal position switch (ICC brake switch) signal is not sent to ECM for extremely long time while the vehicle is being driven | |||