Infiniti EX35. Manual - part 578

 

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Infiniti EX35. Manual - part 578

 

 

EC-54

< FUNCTION DIAGNOSIS >

[VQ35HR]

AIR CONDITIONING CUT CONTROL

4.

EVAP canister vent control valve

5.

EVAP control system pressure sen-
sor

 : Vehicle front

1.

Fuel level sensor unit and fuel pump 
harness connector

2.

Fuel level sensor unit and fuel pump 3.

Fuel pressure regulator

4.

Fuel tank temperature sensor

 : Vehicle front

1.

Accelerator pedal position sensor

2.

ECM

1.

ICC steering switch

2.

CANCEL switch

3.

RESUME/ACCELERATE switch

4.

SET/COAST switch

5.

MAIN switch

6.

DISTANCE switch

7.

LDP switch

JMBIA1182ZZ

JMBIA0015ZZ

JMBIA1308ZZ

AIR CONDITIONING CUT CONTROL

EC-55

< FUNCTION DIAGNOSIS >

[VQ35HR]

C

D

E

F

G

H

I

J

K

L

M

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EC

N

P

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Component Description

INFOID:0000000003133262

1.

ASCD steering switch

2.

CANCEL switch

3.

RESUME/ACCELERATE switch

4.

SET/COAST switch

5.

MAIN switch

1.

Stop lamp switch

2.

ASCD brake switch (ASCD models)
ICC brake switch (ICC models)

3.

Brake pedal

JMBIA0017ZZ

JMBIA0312ZZ

Component

Reference

Accelerator pedal position sensor

EC-421, "Description"

Camshaft position sensor (PHASE)

EC-256, "Description"

Crankshaft position sensor (POS)

EC-252, "Description"

Engine coolant temperature sensor

EC-172, "Description"

Power steering pressure sensor

EC-332, "Description"

Refrigerant pressure sensor

EC-471, "Description"

EC-56

< FUNCTION DIAGNOSIS >

[VQ35HR]

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

System Diagram

INFOID:0000000003133263

System Description

INFOID:0000000003133264

INPUT/OUTPUT SIGNAL CHART

*: This signal is sent to the ECM through CAN communication line

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 144 km/h (89 MPH).
ECM controls throttle angle of electric throttle control actuator to regulate engine speed.
Operation status of ASCD is indicated by CRUISE lamp and SET lamp in combination meter. If any malfunc-
tion occurs in ASCD system, it automatically deactivates control.
NOTE:
Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.

SET OPERATION

Press MAIN switch. (The CRUISE lamp in combination meter illuminates.)
When vehicle speed reaches a desired speed between approximately 40 km/h (25 MPH) and 144 km/h (89
MPH), press SET/COAST switch. (Then SET lamp in combination meter illuminates.)

ACCELERATE OPERATION

If the RESUME/ACCELERATE switch is pressed 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 pressed
• More than 2 switches at ASCD steering switch are pressed at the same time (Set speed will be cleared)
• Brake pedal is depressed

JMBIA1315GB

Sensor

Input signal to ECM

ECM function

Actuator

ASCD brake switch

Brake pedal operation

ASCD vehicle speed control

Electric throttle control 
actuator

Stop lamp switch

Brake pedal operation

ASCD steering switch

ASCD steering switch operation

TCM

Gear position
Powertrain revolution*

Unified meter and A/C amp.

Vehicle speed*

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

EC-57

< FUNCTION DIAGNOSIS >

[VQ35HR]

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• Selector lever is changed to N, P, R position
• Vehicle speed decreased to 13 km/h (8 MPH) lower than the set speed
• 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.
• Engine coolant temperature is slightly higher than the normal operating temperature, CRUISE lamp may

blink slowly.
When the engine coolant temperature decreases to the normal operating temperature, CRUISE lamp will
stop blinking and the cruise operation will be able to work by pressing SET/COAST switch or RESUME/
ACCELERATE switch.

• 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 pressed 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/ACCELERATE switch is pressed after cancel operation other than pressing MAIN 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
• A/T selector lever is in other than P and N positions
• Vehicle speed is greater than 40 km/h (25 MPH) and less than 144 km/h (89 MPH)

 

 

 

 

 

 

 

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