Work Procedure [Automatic Speed Control Device (ASCD)]

WARNING: This page is about a different car, the 2019 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: The running speed can be set between 40 km/h (25 MPH) and 144 km/h (90 MPH)

CAUTION: Never set the cruise speed exceeding the posted speed limit.

CHECK FOR ASCD MAIN SWITCH
1. Start the engine.
2. Press the ASCD MAIN switch
3. Check that the ASCD system display on the information display turns ON and the display is ready for activation.
4. Press the ASCD MAIN switch, and check that the ASCD system display on the information display turns OFF when the ASCD system is deactivated.
5. Check that the ASCD system display on the information display turns OFF after starting the engine again.
GO TO 2.
CHECK FOR RESUME/ACCELERATE, SET/COAST, AND CANCEL SWITCHES
1. Check that RESUME/ACCELERATE, SET/COAST, CANCEL switches are operated smoothly.
2. Check that switches come up as hand is released from the switches.
GO TO 3.
SET CHECKING
1. Start the engine.
2. Press the ASCD MAIN switch and turn the ASCD to ON.
3. Drive the vehicle at 40 km/h (25 MPH) or more.
4. Push down the SET/COAST switch.
5. Check that the desired speed is set and ASCD control starts when releasing SET/COAST switch.
NOTE: Display the set status in the ASCD system display on the information display.

GO TO 4.
CHECK FOR INCREASE OF CRUISING SPEED
1. Set the vehicle speed to any desired speed, and drive the vehicle.
2. Check that the set speed increases by 1.6 km/h (1 MPH) as RESUME/ACCELERATE switch is pushed up.
NOTE:
- The maximum set speed is 144 km/h (90 MPH).
- The set vehicle speed increases while pushing up the RESUME/ACCELERATE switch.
CAUTION: Never set the cruise speed exceeding the posted speed limit.

GO TO 5.
CHECK FOR DECREASE OF CRUISING SPEED
1. Set the vehicle speed to any desired speed, and drive the vehicle.
2. Check that the set speed decreases by 1.6 km/h (1 MPH) as SET/COAST switch is pushed down.
NOTE:
- The minimum set speed is 40 km/h (25 MPH).
- The set vehicle speed decreases while pressing down the SET/COAST switch.
GO TO 6.
CHECK FOR CANCELLATION OF ASCD
Check that the ASCD is canceled when performing the following operations.
- When the brake pedal is depressed after the ASCD is set and the vehicle is driven.
- When the selector lever is in the "N" position after the ASCD is set and the vehicle is driven.
- When the ASCD MAIN switch is turned OFF after the ASCD is set and the vehicle is driven.
- When the CANCEL switch is pressed after the ASCD is set and the vehicle is driven.
GO TO 7.
CHECK FOR RESTORING SPEED THAT IS SET BY ASCD BEFORE CANCELLATION
Check that the vehicle restores the previous speed kept before the system deactivation when performing the following operations.
- Drive the vehicle when the ASCD is set and depress the brake pedal to cancel the control. Check that the vehicle restores the previous vehicle speed kept before the system deactivation when pushing up the RESUME/ACCELERATE switch at the vehicle speed approximately 40 km/h (25 MPH) or more.
- Drive the vehicle when the ASCD is set and shift the selector lever is in the "N" position to cancel the control. Check that the vehicle restores the previous vehicle speed kept before the system deactivation when shifting the selector lever is in the "D" position and pushing up the RESUME/ACCELERATE switch at the vehicle speed of approximately 40 km/h (25 MPH) or more.
- Drive the vehicle when the ASCD is set and press the CANCEL switch to cancel the control. Check that the vehicle restores the previous vehicle speed kept before the system deactivation when pushing up the RESUME/ACCELERATE switch at the vehicle speed of approximately 40 km/h (25 MPH) or more.
INSPECTION END