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Nissan Primera P12. Manual - part 367
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
EC-653
[YD (WITHOUT EURO-OBD)]
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AUTOMATIC SPEED CONTROL DEVICE (ASCD)
PFP:18930
System Description
EBS015DQ
INPUT/OUTPUT SIGNAL CHART
BASIC ASCD SYSTEM
Refer to Owner's Manual for ASCD operating instructions.
Automatic Speed Control Device (ASCD) allows a driver to keep vehicle at predetermined constant speed
without depressing accelerator pedal. Driver can set vehicle speed in advance between approximately 40 km/
h (25 MPH) and 185 km/h (115 MPH).
ECM controls fuel injection value to regulate engine speed.
Operation status of ASCD is indicated by CRUISE indicator and SET indicator in combination meter. If any
malfunction occurs in ASCD system, it automatically deactivates control.
SET OPERATION
Press ASCD ON/OFF switch (Main switch). (The CRUISE indicator in combination meter illuminates.)
When vehicle speed reaches a desired speed between approximately 40 km/h (25 MPH) and 185 km/h (115
MPH), press SET switch. (Then SET indicator in combination meter illuminates.)
ACCEL OPERATION
If the RESUME/ACCEL switch is depressed during cruise control driving, increase the vehicle speed until the
switch is released or vehicle speed reaches maximum speed controlled by the system.
And then ASCD will keep the new set speed.
CANCEL OPERATION
When any of following conditions exist, cruise operation will be canceled.
●
CANCEL switch is depressed
●
More than 2 switches at ASCD steering switch are depressed at the same time (Set speed will be
cleared.).
●
Brake pedal is depressed
●
Clutch pedal is depressed or gear position is changed to the neutral position
●
Vehicle speed increased to 13 km/h higher than the set speed
●
Vehicle speed decreased to 13 km/h lower than the set speed
●
ESP/TCS system is operated
When the ECM detects any of the following conditions, the ECM will cancel the cruise operation and inform
the driver by blinking indicator lamp.
●
Malfunction for some self-diagnoses regarding ASCD control: SET lamp will blink quickly.
If MAIN switch is turned to OFF during ASCD is activated, all of ASCD operations will be canceled and vehicle
speed memory will be erased.
COAST OPERATION
When the SET/COAST switch is depressed during cruise control driving, decrease vehicle set speed until the
switch is released. And then ASCD will keep the new set speed.
RESUME OPERATION
When the RESUME/ACCEL switch is depressed after cancel operation other than depressing ON/OFF switch
is performed, vehicle speed will return to last set speed. To resume vehicle set speed, vehicle condition must
meet following conditions.
●
Brake pedal is released
●
Clutch pedal is released
●
Vehicle speed is greater than 40 km/h (25 MPH) and less than 185 km/h (115 MPH)
Sensor
Input signal to ECM
ECM function
Actuator
ASCD brake switch
Brake pedal operation
ASCD vehicle speed control
Fuel injector and Fuel pump
Stop lamp switch
Brake pedal operation
ASCD clutch switch
Clutch pedal operation
ASCD steering switch
ASCD steering switch operation
Combination meter
Vehicle speed