ASCD Vehicle Speed Sensor
P1574 ASCD VEHICLE SPEED SENSORDescription
The ECM receives two vehicle speed signals via CAN communication line. One is sent from "unified meter and A/C amp.", and the other is from TCM (Transmission control module). The ECM uses these signals for ASCD control. Refer to EC-56, "System Description" Automatic Speed Control Device (ASCD) for ASCD functions.
DTC Logic
DTC DETECTION LOGIC
NOTE:
- If DTC P1574 is displayed with DTC U1000, U1001, first perform the trouble diagnosis for DTC U1000, U1001. Refer to EC-136, "DTC Logic". U1000
- If DTC P1574 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer to EC-338, "DTC Logic". P0607
- If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500. Refer to EC-326, "DTC Logic". P0500
- If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to EC-336, "DTC Logic". P0605
DTC CONFIRMATION PROCEDURE
Step 1-2:
Diagnosis Procedure
