2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 678
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Step 2 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test is expected to be easier, it is
unnecessary to lift the vehicle.
- GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Press MAIN switch on ICC steering switch.
3. Drive the vehicle at more than 40 km/h (25 MPH).
CAUTION:
Always drive vehicle at a safe speed.
4. Press SET/COAST switch.
5. Check DTC.
Is DTC detected?
YES - Go to See: P Code Charts/P1568.
NO - INSPECTION END
Diagnosis Procedure
1.REPLACE ICC SENSOR INTEGRATED UNIT
1. Replace ICC sensor integrated unit.
2. Perform See: Cruise Control/Testing and Inspection/Initial Inspection and Diagnostic Overview/Action Test/ICC System Running Test.
3. Check DTC of ICC sensor integrated unit. See: Diagnostic Trouble Code Descriptions/Cruise Control System.
- INSPECTION END
ASCD Brake Switch
P1572 ASCD BRAKE SWITCH
Description
When the brake pedal is depressed, ASCD brake switch is turned OFF and stop lamp switch is turned ON.
ECM detects the state of the brake pedal by those two types of input (ON/OFF signal). See: Powertrain Management/Computers and Control
Systems/Description and Operation/Automatic Speed Control Device (ASCD)/System Description for the ASCD function.
DTC Logic
DTC DETECTION LOGIC
NOTE:
- If DTC P1572 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. See: P Code Charts/P0605.
- 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 CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
NOTE:
The procedure for malfunction B is not described. It takes an extremely long time to complete the procedure for malfunction B. By performing the
procedure for malfunction A, the condition that causes malfunction B can be detected.
- GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE-I
With CONSULT-III
1. Start engine (VDC switch OFF).
