2010 INFINITI QX56 Factory Service Manual

charging oil type maintenance brake light dimensions headlamp

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INFINITI QX56 2010 Factory Service Manual CCS-12
< FUNCTION DIAGNOSIS >
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
FUNCTION DIAGNOSIS
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
System DescriptionINFOID:0000000005145978
For information regarding the aut

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INFINITI QX56 2010 Factory Service Manual CCS
INTELLIGENT CRUISE CONTROL SYSTEMCCS-13
< FUNCTION DIAGNOSIS >
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INTELLIGENT CRUISE CONTROL SYSTEM
System DiagramINFOID:0000000005145979
System DescriptionINFOID:0000000

CCS
INTELLIGENT CRUISE CONTROL SYSTEMCCS-13
< FUNCTION DIAGNOSIS >
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INTELLIGENT CRUISE CONTROL SYSTEM
System DiagramINFOID:0000000005145979
System DescriptionINFOID:0000000005145980
• The Intelligent Cruise Control (ICC) system automatic ally maintains a selected distance from the vehicle
ahead according to that vehicle's speed, or at the set speed, if the road ahead is clear.
• The ICC function has two cruise control modes and brake assist (with preview function).
• To activate or deactivate the ICC system and set the vehicle speed and vehicle-to-vehicle distance, use the
ICC steering switch.
• The operation status of the ICC system is indicated on the ICC system display of the combination meter.
VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE
• Vehicle-to-vehicle distance control mode, the vehicle can maintain the same speed as other vehicles without
the constant need to adjust the set speed as the dr iver would with a normal cruise control system.
• The system is intended to enhance the operation of the v ehicle when following the vehicle traveling in the
same lane and direction.
• If the ICC sensor integrated unit detects a slow er moving vehicle ahead, the system will reduce speed so
that the vehicle ahead can be followed at the selected distance.
• The system automatically controls the throttle and applies the brakes (up to 25% of vehicle braking power) if necessary.
• The detection range of the sensor is approximately 390 ft (120 m) ahead.
• Refer to Owner's Manual for Intelligent Cr uise Control System operating instructions.
CONVENTIONAL (FIXED SPEED) CRUISE CONTROL MODE
• Conventional (fixed speed) cruise control mode is cruising at preset speeds.
• Refer to Owner's Manual for Intelligent Cruise Control System operating instructions.
BRAKE ASSIST (WITH PREVIEW FUNCTION)
• When the force applied to brake pedal exceeds a certain level, the Brake Assist is activated and generates a
greater braking force than that of a convent ional brake booster even with light pedal force.
• When the Preview Function identifies the need to apply the sudden brake by sensing the vehicle ahead in the same lane and the distance and relative speed from it, it applies the brake pre-pressure before driver
depresses the brake pedal and improves brake response by reducing its free play.
• Refer to Owner's Manual for BRAKE ASSIST (WITH PREVIEW FUNCTION) operating instructions.
WKIA1976E
Revision: April 20092010 QX56

Page 683 of 4210

INFINITI QX56 2010 Factory Service Manual CCS-14
< FUNCTION DIAGNOSIS >
INTELLIGENT CRUISE CONTROL SYSTEM
ICC STEERING SWITCH
ICC system is operated by MAIN switch and four control switches, all mounted on the steering wheel.
NOTE:
The on boa

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INFINITI QX56 2010 Factory Service Manual CCS
INTELLIGENT CRUISE CONTROL SYSTEMCCS-15
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Component Parts LocationINFOID:0000000005145981
1. ICC system display 2. Combination meter M23, M24 (wit

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INFINITI QX56 2010 Factory Service Manual CCS-16
< FUNCTION DIAGNOSIS >
INTELLIGENT CRUISE CONTROL SYSTEM
Component Description
INFOID:0000000005145982
× : Applicable
Component Veh ic le-t o-
vehicle
distance
control mode Conventional
(Fi

Page 686 of 4210

INFINITI QX56 2010 Factory Service Manual CCS
DIAGNOSIS SYSTEM (ICC SENSOR INTEGRATED UNIT)
CCS-17
< FUNCTION DIAGNOSIS >
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DIAGNOSIS SYSTEM (ICC SENSOR INTEGRATED UNIT)
Diagnosis DescriptionINFOID:000000000514598

Page 687 of 4210

INFINITI QX56 2010 Factory Service Manual CCS-18
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (ICC SENSOR INTEGRATED UNIT)
ERASING ON BOARD SELF-DIAGNOSIS
1. Stop the vehicle and turn ignition switch OFF.
2. Start engine and start on board self-di

CCS-18
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (ICC SENSOR INTEGRATED UNIT)
ERASING ON BOARD SELF-DIAGNOSIS
1. Stop the vehicle and turn ignition switch OFF.
2. Start engine and start on board self-diagnosis.
3. During on board self-diagnosis, press CANCEL switch 5 times,
and DISTANCE switch 5 times in this order.
NOTE:
• Press them within 10 seconds after pressing CANCEL switch
at first.
• When operation is not completed within 10 seconds, start again from step 2 above.
4. DTC 55 will be shown. NOTE:
DTC of an existing malfunction will not be erased.
5. Turn ignition switch OFF to exit the diagnosis.
CONSULT-III Function (ICC)INFOID:0000000005145984
DESCRIPTION
CONSULT-III can display each diagnostic item us ing the diagnostic test modes shown following.
WORK SUPPORT
Cause of Auto-Cancel Display Item List
×: Applicable
PKIB8373E
Test mode Function
Work Support • Monitors aiming direction to facilitate laser beam aiming operation.
• Indicates causes of automatic cancellation of the ICC system.
Self Diagnostic Result Displays malfunctioning system memorized in ICC sensor integrated unit.
Data Monitor Displays real-time input/output data of ICC sensor integrated unit.
Active Test Enables operation check of electrical loads by sending driving signal to them.
ECU Identification Displays part number of ICC sensor integrated unit.
Work support item Function
CAUSE OF AUTO-CANCEL Indicates causes of automatic cancellation of the ICC system.
LASER BEAM ADJUST Outputs laser beam, calculates dislocation of the beam, and indicates adjustment direction.
For the adjustment procedure, refer to
CCS-5, "
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Special Repair Requirement".
Cause of cancellationVehicle-to-vehi-
cle distance
control modeConventional
(fixed speed)
cruise control
mode
Description
OPERATING WIPER ×Windshield wipers were operated at HI or LO speed operation.
OPERATING ABS ×ABS function was operated.
OPERATING TCS ××TCS function was operated.
OPERATING VDC ××VDC function was operated.
OPE SW VOLT CIRC ××Outside the standard control switch input voltage was detected.
ECM CIRCUIT ××ECM did not permit ICC operation.
LASER SUN BEAM ×Intense light such as sunlight entered ICC sensor integrated unit
light sensing part.
LASER TEMP ×Temperature around ICC sensor integrated unit became low.
OP SW DOUBLE TOUCH ××ICC steering switches were pressed at the same time.
WHL SPD ELEC NOISE ××Wheel speed sensor signal caught electromagnetic noise.
Revision: April 20092010 QX56

Page 688 of 4210

INFINITI QX56 2010 Factory Service Manual CCS
DIAGNOSIS SYSTEM (ICC SENSOR INTEGRATED UNIT)
CCS-19
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• Last five cancel (system cancel) causes are displayed.
• “CAUSE OF AUTO-CANCEL”

CCS
DIAGNOSIS SYSTEM (ICC SENSOR INTEGRATED UNIT)
CCS-19
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• Last five cancel (system cancel) causes are displayed.
• “CAUSE OF AUTO-CANCEL” displays times of ignition switch ON/OFF up to 254 maximum. 254 is kept though the number exceeds 254. The num ber returns to 0 when detecting the same cancellation causes.
SELF DIAGNOSTIC RESULT
For details, refer to CCS-56, "Diagnostic Trouble Code (DTC) Chart".
NOTE:
“DTC RESULTS” and “TIME” are indicated on “Self Diagnostic Result”. “TIME” is used as a reference data of
diagnosis. It shows when malfunction is detected.
“TIME” shows the following.
• 0: malfunction is detected at present (from malfunction detection to ignition switch OFF).
CAN communication ([U1000], [U1010])
• 1 ~ 39: Displays when it is normal at present and finds malfunction in the past. It increases like
0→ 1→ 2...38→ 39 after returning to the normal condition whenever IGN OFF→ ON. If it is over 39, it is fixed to
39 until the self-diagnostic results are erased. It retu rns to 0 when malfunction is detected again in the pro-
cess.
Other than CAN communication (other than [U1000], [U1010])
• 1 ~ 49: Displays when it is normal at present and finds malfunction in the past. It increases like 0→ 1→ 2...48→ 49 after returning to the normal condition whenever IGN OFF→ ON. If it is over 49, it is fixed to
49 until the self-diagnostic results are erased. It retu rns to 0 when malfunction is detected again in the pro-
cess.
DATA MONITOR
× : Applicable
VDC/TCS OFF SW ×VDC OFF switch was pressed.
WHEEL SPD UNMATCH ××Wheel speed became different from A/T vehicle speed.
TIRE SLIP ××Wheel slipped.
IGN LOW VOLT ××Power supply voltage became low.
NO RECORD ××—
Monitored Item [unit]MAIN
SIGNALS SELECTION
FROM
MENU Description
VHCL SPEED SE
[km/h] or [mph] ××Indicates vehicle speed calculated from ICC sensor integrated unit through
CAN communication [ABS actuator and electric unit (control unit) transmits
vehicle speed signal (wheel speed) through CAN communication].
SET VHCL SPD
[km/h] or [mph] ××
Indicates set vehicle speed memorized in ICC sensor integrated unit.
THRTL OPENING
[%] ××Indicates throttle position read from ICC sensor integrated unit through CAN
communication (ECM transmits accelerator pedal position signal through
CAN communication).
SET DISTANCE
[SHOR/MID/LONG] ××
Indicates set distance memorized in ICC sensor integrated unit.
MAIN SW
[On/Off] ××Indicates [On/Off] status as judged from ICC steering switch signal (ECM
transmits ICC steering switch signal through CAN communication).
SET/COAST SW
[On/Off] ××
Indicates [On/Off] status as judged from ICC steering switch signal (ECM
transmits ICC steering switch signal through CAN communication).
CANCEL SW
[On/Off] ××Indicates [On/Off] status as judged from ICC steering switch signal (ECM
transmits ICC steering switch signal through CAN communication).
RESUME/ACC SW
[On/Off] ××Indicates [On/Off] status as judged from ICC steering switch signal (ECM
transmits ICC steering switch signal through CAN communication).
DISTANCE SW
[On/Off] ×
Indicates [On/Off] status as judged from ICC steering switch signal (ECM
transmits ICC steering switch signal through CAN communication).
CRUISE OPE
[On/Off] ××
Indicates whether controlling or not (ON means “controlling”).
BRAKE SW
[On/Off] ××Indicates [On/Off] status as judged from ICC brake switch signal (ECM trans-
mits ICC brake switch signal through CAN communication).
Revision: April 20092010 QX56

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