DTC Detection Logic
NOTE:
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.
- When the vehicle speed is above 30 km/h (19 MPH), ON signals from the stop lamp switch and the brake pedal position switch are sent to the ECM at the same time.
- Brake pedal position switch signal is not sent to ECM for extremely long time while the vehicle is driving.
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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P1572 |
ASCD BRAKE SW (Brake pedal position switch) |
1 |
Diagnosis condition |
-- |
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Signal (terminal) |
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Threshold |
When the vehicle speed is above 30 km/h (19 MPH), ON signals from the stop lamp switch and the brake pedal position switch are sent to the ECM at the same time |
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Diagnosis delay time |
-- |
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2 |
Diagnosis condition |
-- |
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Signal (terminal) |
Brake pedal position switch signal |
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Threshold |
Brake pedal position switch signal is not sent to ECM for extremely long time while the vehicle is driving |
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Diagnosis delay time |
Extremely long time |
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