2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 691
Is the inspection result normal?
YES - INSPECTION END
NO - Replace stop lamp switch.
Component Inspection (ICC Brake Hold Relay)
1.CHECK ICC BRAKE HOLD RELAY
1. Turn ignition switch OFF.
2. Remove ICC brake hold relay.
3. Check the continuity between ICC brake hold relay terminals under the following conditions.
Is the inspection result normal?
YES - INSPECTION END
NO - Replace ICC brake hold relay
ASCD Vehicle Speed Sensor
P1574 ASCD VEHICLE SPEED SENSOR
Description
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. See: Powertrain
Management/Computers and Control Systems/Description and Operation/Automatic Speed Control Device (ASCD)/System Description for
ASCD functions.
DTC Logic
DTC DETECTION LOGIC
NOTE:
- If DTC P1574 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.
- If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500. See: P Code Charts/P0500.
- If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. See: P Code Charts/P0605.
- If DTC P1574 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. See: P Code Charts/P0607.
DTC CONFIRMATION PROCEDURE
