Infiniti QX56 (JA60). Manual — part 170
CCS-16
< FUNCTION DIAGNOSIS >
INTELLIGENT CRUISE CONTROL SYSTEM
Component Description
INFOID:0000000005145982
×: Applicable
Component
Vehicle-to-
vehicle
distance
control mode
Conventional
(Fixed speed)
cruise
control mode
Brake assist
(With preview
function)
Description
ICC unit
×
×
×
Controls vehicle speed through ECM via CAN commu-
nication.
ICC sensor
×
×
×
Measures distance to objects in front of the vehicle and
transmits that information to the ICC unit.
ECM
×
×
×
Refer to
ABS actuator and electric
unit (control unit)
×
×
×
Refer to
.
Brake pressure sensor
×
×
Detects brake fluid pressure.
Brake booster
×
×
Adjusts brake fluid pressure based on command from
ABS actuator and electric unit (control unit).
BCM
×
Transmits front wiper request signal to ICC sensor inte-
grated unit through CAN communication.
TCM
×
×
Refer to
.
CCS
DIAGNOSIS SYSTEM (ICC SENSOR INTEGRATED UNIT)
CCS-17
< FUNCTION DIAGNOSIS >
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F
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N
P
A
DIAGNOSIS SYSTEM (ICC SENSOR INTEGRATED UNIT)
Diagnosis Description
INFOID:0000000005145983
The ICC system includes the on board self-diagnosis function that allows the technician to check for any trou-
ble codes on the ICC system display by operating the ICC steering switch.
ON BOARD SELF-DIAGNOSIS OPERETION PROCEDURE
1. Turn ignition switch OFF.
2. Start engine.
3. From 5 seconds through 15 seconds after start engine, press
RESUME/ACCELERATE switch 5 times, and SET/COAST
switch 5 times.
NOTE:
• Never turn the MAIN switch ON.
• When operation above is not completed from 5 seconds
through 15 seconds, start again from above go to 1.
4. When the on board self-diagnosis starts up, the ICC system display shows DTC No. (1) at the set vehicle
speed indicator. Refer to
CCS-56, "Diagnostic Trouble Code (DTC) Chart"
.
NOTE:
• DTC will disappear after 5 minutes.
• When more than one malfunction is detected, a maximum of 3 code numbers can be stored; the latest
malfunction will be displayed first.
WHEN ON BOARD SELF-DIAGNOSIS WILL NOT START UP
If the on board self-diagnosis does not start up, check the following items.
PKIB8371E
JSOIA0008GB
Assumed abnormal point
Inspection item
ICC steering switch malfunction.
Perform the inspection for DTC 46 OPERATION SW CIRC. Refer to
Harness malfunction between ICC
steering switch and ECM.
ECM malfunction.
ICC unit malfunction.
• Inspect the ICC sensor power and ground circuits. Refer to
POWER SUPPLY CIR1, DTC 34 POWER SUPPLY CIR2"
• Perform the self-diagnosis for the ICC unit with CONSULT-III, and check the diag-
CCS-56, "Diagnostic Trouble Code (DTC) Chart"
.
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 using 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 cancellation
Vehicle-to-vehi-
cle distance
control mode
Conventional
(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.
CCS
DIAGNOSIS SYSTEM (ICC SENSOR INTEGRATED UNIT)
CCS-19
< FUNCTION DIAGNOSIS >
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D
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F
G
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M
B
N
P
A
• 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 number 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 returns 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 returns 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).
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