2007 INFINITI QX56 service indicator

ACS-8
< SERVICE INFORMATION >[ICC]
DESCRIPTION
ICC System Display
INFOID:0000000003533780
4 CANCEL switch Deactivates system without erasing set speed.
5 DISTANCE switch Changes the following distance from: Long, Middle, Short. No. Switch name Description
WKIA1977E
No. Component Description
1 Set vehicle speed indicator Indicates the set vehicle speed.
2 Vehicle ahead detection indicator Indicates whether it detects a vehicle ahead.
3 Set distance indicatorDisplay the selected distance between vehicles set with the DISTANCE
switch.
4 Own vehicle indicator Indicates the base vehicle.
5 ON/OFF switch indicator lamp (Green) Indicates that the system is ON.
6Intelligent cruise control system warning
lamp (Orange)The light comes on if there is a malfunction in the ICC system.
7 Cruise set switch indicator lamp Indicates that the conventional cruise control mode is on.

ACTION TEST
ACS-9
< SERVICE INFORMATION >[ICC]
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ACTION TEST
ICC System Running TestINFOID:0000000003533781
VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE
SET CHECKING
1. Press the ON/OFF switch for less than 1.5 seconds.
2. Drive the vehicle between 40 km/h (25 MPH) and 144 km/h (89 MPH).
3. Push the COAST/SET switch.
4. Confirm that the desired speed is set as the COAST/SET switch is released.
NOTE:
• When there is no vehicle ahead, drive at the set speed steadily.
• When there is a vehicle ahead, control to maintain distance from the vehicle ahead, watching its speed.
• The set vehicle speed is displayed on the ICC system indicator in the combination meter.
CHECK FOR INCREASE OF THE CRUISING SPEED
1. Set vehicle-to-vehicle distance control mode at desired speed.
2. Check if the set speed increases by 1.6 km/h (1 MPH) as ACCEL/RES switch is pushed.
NOTE:
The maximum set speed of the vehicle-to-vehicle distance control mode is 144 km/h (89 MPH).
CHECK FOR DECREASE OF THE CRUISING SPEED
1. Set vehicle-to-vehicle distance control mode at desired speed.
2. Check if the set speed decreases by 1.6 km/h (1 MPH) as COAST/SET switch is pushed.
NOTE:
• Vehicle-to-vehicle distance control mode is automatically turned off when the driving speed lowers to 32 km/
h (20 MPH) due to the deceleration of the vehicle ahead.
• The minimum set speed of the vehicle-to-vehicle distance control mode is 40 km/h (25 MPH).
CHECK FOR THE CANCELLATION OF VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE (NORMAL DRIV-
ING CONDITION) IN THE FOLLOWING CASES:
1. When the brake pedal is depressed after the system is turned on.
2. When the selector lever is shifted to the "N" (Neutral) position.
3. When the system is turned off.
4. When CANCEL switch is operated.
CHECK FOR RESTORING THE SPEED THAT IS SET BY VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE
BEFORE CANCELLATION
1. Cancel the system by depressing the brake. Then, check that the speed before cancellation is restored
when pressing ACCEL/RES switch with vehicle speed at 40 km/h (25 MPH) or above.
2. Cancel the system by shifting the selector lever to “N”. Then, check if the speed set before the cancella-
tion is restored when ACCEL/RES switch is pressed.
3. Check if the speed previously set is restored when ACCEL/RES switch is operated when driving 40 km/h
(25 MPH) or above, after canceling vehicle-to-vehicle distance control mode by operating the CANCEL
switch.
CHECK ON/OFF SWITCH OPERATION

ACS-10
< SERVICE INFORMATION >[ICC]
ACTION TEST
1. Start the engine. Then, check that the following operations are
performed correctly.
2. Vehicle-to-vehicle distance control mode is displayed when ON/
OFF switch is pressed ON. Vehicle-to-vehicle distance control
mode goes off when ON/OFF switch is turned to OFF.
3. Turn off the ignition switch while ON/OFF switch is ON. Turn the
ignition switch back to ON and confirm that CRUISE lamp and
ICC system display are OFF.
CHECK FOR ACCEL/RES, COAST/SET, CANCEL SWITCHES
1. Check if ACCEL/RES, COAST/SET, CANCEL switches operate smoothly.
2. Check if switch buttons rebound as the buttons are released.
CHECK FOR DISTANCE SWITCH
1. Start the engine.
2. Press the ON/OFF switch for less than 1.5 seconds.
3. Press the DISTANCE switch.
4. Check if the set distance indicator changes display in order of:
(long)→(middle)→(short).
NOTE:
The set distance indicator shows long immediately after the engine starts.
CONVENTIONAL (FIXED SPEED) CRUISE CONTROL MODE
SET CHECKING
1. Press the ON/OFF switch for more than 1.5 seconds.
2. Drive the vehicle between 40 km/h (25 MPH) and 144 km/h (89 MPH).
3. Push the COAST/SET switch.
4. Confirm that the desired speed is set when the COAST/SET switch is released.
NOTE:
• ICC system display in the combination meter shows nothing.
CHECK FOR INCREASE OF THE CRUISING SPEED
1. Set the conventional (fixed speed) cruise control mode at desired speed.
2. Check if the set speed increases by 1.6 km/h (1 MPH) as ACCEL/RES switch is pushed.
NOTE:
• If the ACCEL/RES switch is held, the vehicle speed increases until the switch is released.
• The maximum set speed is 144 km/h (89 MPH).
WKIA1978E
SKIA6178E

ACTION TEST
ACS-11
< SERVICE INFORMATION >[ICC]
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1. Set the conventional (fixed speed) cruise control mode at desired speed.
2. Check if the set speed decreases by 1.6 km/h (1 MPH) as COAST/SET switch is pushed.
NOTE:
• Conventional (fixed speed) cruise control mode is automatically turned off when the driving speed lowers to
32 km/h (20 MPH).
• The lowest set speed is 40 km/h (25 MPH).
CHECK FOR THE CANCELLATION OF CONVENTIONAL (FIXED SPEED) CRUISE CONTROL MODE (NORMAL
DRIVING CONDITION) IN THE FOLLOWING CASES:
Refer to "CHECK FOR THE CANCELLATION OF VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE
(NORMAL DRIVING CONDITION) IN THE FOLLOWING CASES:" .
CHECK FOR RESTORING THE SPEED THAT IS SET BY CONVENTIONAL (FIXED SPEED) CRUISE CONTROL
MODE BEFORE ICC CANCELLATION
Refer to "CHECK FOR RESTORING THE SPEED THAT IS SET BY VEHICLE-TO-VEHICLE DISTANCE
CONTROL MODE BEFORE CANCELLATION" .
CHECK ON/OFF SWITCH OPERATION
1. Start the engine. Then, check that the following operations are
performed correctly.
2. CRUISE lamp (green) illuminates and ICC system indicator
goes off when ON/OFF switch is pressed ON for more than 1.5
seconds. The CRUISE lamp goes off when ON/OFF switch is
turned to OFF.
3. Turn off the ignition switch while ON/OFF switch is ON. Turn the
ignition switch back to ON and confirm that CRUISE lamp is
OFF.
CHECK FOR ACCEL/RES, COAST/SET, CANCEL SWITCHES
1. Check if ACCEL/RES, COAST/SET, CANCEL switches operate smoothly.
2. Check if switch buttons rebound as the buttons are released.
WKIA2038E

ACS-28
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ACTIVE TEST
CAUTION:
Do not perform the active test while driving. Active test cannot be started while ICC system warning
indicator is illuminated.
Active Test
STOP LAMP SW
[ON/OFF]×××Indicates [ON/OFF] status as judged from
stop lamp switch signal.
RELEASE SW NO
[ON/OFF]
××Indicates [ON/OFF] status as judged from
release switch signal.
ON when brake is depressed.
OFF when brake is not depressed.
RELEASE SW NC
[ON/OFF]
××Indicates [ON/OFF] status as judged from
release switch signal.
OFF when brake is depressed.
ON when brake is not depressed.
IDLE SW
[ON/OFF]
××Indicates [ON/OFF] status of idle switch
read by ICC unit via CAN communication
(ECM transmits ON/OFF status via CAN
communication).
GEAR
[1, 2, 3, 4, 5]××Indicates A/T gear position read by ICC unit
via CAN communication (TCM transmits
gear position via CAN communication).
BUZZER O/P
[ON/OFF] ×Indicates [ON/OFF] status of ICC warning
output.
ICC WARNING×NOTE:
This item is displayed but cannot be moni-
tored.
VHCL SPD AT
[km/h] or [mph]
×Indicates vehicle speed calculated from A/T
vehicle speed sensor by ICC unit via CAN
communication (TCM transmits A/T vehicle
speed sensor signal via CAN communica-
tion).
PRESS SENS
[bar]×××Indicates brake fluid pressure value calculat-
ed from signal voltage of pressure sensor.
PRESS SENS 2
[bar]××NOTE:
This item is displayed but cannot be moni-
tored.
D RANGE SW
[ON/OFF]
××Indicates [ON/OFF] status of “D” position
read by ICC unit via CAN communication
(TCM transmits ON/OFF condition of “D” po-
sition via CAN communication).
A/T OD OFF
[ON/OFF]×Indicates [ON/OFF] status of OD cancel out-
put under control.
NP RANGE SW
[ON/OFF]××Indicates PNP switch signal read by ICC unit
via CAN communication. (TCM transmits
PNP switch signal via CAN communication)
DISTANCE×NOTE:
This item is displayed but cannot be moni-
tored.
RELATIVE SPD×NOTE:
This item is displayed but cannot be moni-
tored.
STP LMP DRIVE
[ON/OFF]××Indicates [ON/OFF] status of brake hold re-
lay drive output. Monitored Item [unit] MAIN SIGNALSECU IN-
PUT SIG-
NALSSELECTION
FROM MENUDescription

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ACS-31
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1. Go to operation check after asking the customer for symptom information. Refer to ACS-9.
2. Stop the vehicle to start the self-diagnosis.
3. Turn ignition switch OFF.
4. Turn ignition switch ON, and wait 5 seconds. Press ACCEL/RES
switch 5 times, and then press COAST/SET switch 5 times all
within 5 seconds to start self-diagnosis.
CAUTION:
• Do not start the engine.
• Do not press the ICC ON/OFF switch ON.
• When operation above is not completed within the 5 to 10 sec-
ond window, DTC will not be displayed.
• If self-diagnosis mode cannot be started after several
attempts, the ICC unit may be malfunctioning and should be
replaced. Refer to "SELF-DIAGNOSIS BY ICC SYSTEM DIS-
PLAY WILL NOT RUN".
5. When self-diagnosis mode is started, DTCs are shown on set vehicle speed indicator.
CAUTION:
• DTC will disappear after 5 minutes.
• When multiple malfunctions are detected, a maximum of 3 code numbers can be stored; the lat-
est malfunction will be displayed first.
6. Check ACS-34, "
Diagnostic Trouble Code (DTC) Chart" , and repair or replace if necessary.
7. After repair, erase DTC stored in the ICC unit. Refer to "Self-Diagnostic Erasing Method".
8. DTC 55 will be shown.
9. Turn ignition switch OFF to exit the diagnosis.
10. Perform ICC system running test (drive vehicle with ICC system ON), and make sure that ICC warning
lamp does not illuminate.
Self-Diagnostic Erasing Method
1. Stop the vehicle and turn the ignition switch OFF.
2. Turn ignition switch ON and start self-diagnosis.
3. During self-diagnosis mode, press CANCEL switch 5 times, and DISTANCE switch 5 times within a 10
second time period.
CAUTION:
• Switch inputs must be received within a 10 second time period.
• When operation is not completed within 10 seconds start again from step 1.
4. DTC 55 will be shown.
CAUTION:
DTC of an existing malfunction will not be erased.
5. Turn ignition switch OFF to exit the diagnosis.
WKIA1921E
WKIA1922E

ACS-32
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
6. Perform ICC system running test (drive vehicle with ICC system ON), and make sure that ICC system
warning lamp (orange) does not illuminate.
SELF-DIAGNOSIS BY ICC SYSTEM DISPLAY WILL NOT RUN
Self Diagnosis Will Not Run
1.CHECK ICC SYSTEM DISPLAY
When ignition switch is ON, do all displays illuminate?
YES or NO
YES >> GO TO 2.
NO >> GO TO 5.
2.CHECK SELF-DIAGNOSIS
• Disconnect ECM connectors, and check for damaged, bent or loose terminals. Securely connect them
again.
• Can self-diagnosis for ICC system be performed?
YES or NO
YES >> Inspection End.
NO >> GO TO 3.
3.CHECK ICC STEERING SWITCH
Check ICC steering switch. Refer to ACS-54, "
ICC Steering Switch" .
OK or NG
OK >> GO TO 4.
WKIA1985E
Component Possible Cause Specific causes
ICC unit power supply malfunctionNo voltage supply from ignition switchFuse blown
Harness open
Harness shorted
Ground cable not connectedHarness open
Harness shorted
ICC steering switch malfunction No signal transmittedHarness open
Harness shorted
Spiral cable open
Spiral cable shorted
Switch or ECM malfunction
CAN communication system malfunction Signal not transmittedHarness open
Harness shorted
CAN communication outside the standard
Combination meter system malfunction Indication not possibleIndicator malfunction
Indicator segments disappear
ICC unit malfunction Internal malfunction ICC unit

TROUBLE DIAGNOSIS FOR SYMPTOMS
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• Perform ICC system running test. Refer to ACS-9, "ICC System Running Test" . Then perform
self-diagnosis of ICC system again.
Symptom 8 the System Does Not Detect the Vehicle Ahead at AllINFOID:0000000003533822
1.VISUAL CHECK
1. With ignition switch turned ON (engine not started), check that all indicator lamps in ICC system display
are continuously lit. (Check for a missing segment in preceding vehicle detection display.)
OK or NG
OK >> GO TO 2.
NG >> Check combination meter. Refer to DI-15, "
How to Proceed with Trouble Diagnosis".
2. VISUAL CHECK
• Check ICC sensor body window for contamination and foreign materials.
OK or NG
OK >> If any contamination or foreign materials are found, remove them. Perform ICC system running
test. Refer to ACS-9, "
ICC System Running Test".
NG >> GO TO 3.
3.VISUAL CHECK
• Check ICC sensor body window for cracks and scratches.
OK or NG
OK >> GO TO 4.
NG >> • Replace ICC sensor and perform laser beam aiming adjustment. Refer to ACS-55, "
ICC Sen-
sor".
• Perform ICC system running test. Refer to ACS-9, "
ICC System Running Test". Then perform
self-diagnosis of ICC system again.
4.ADJUST ICC SENSOR
• After performing laser beam aiming adjustment, perform ICC system running test. Refer to ACS-9, "
ICC Sys-
tem Running Test". Check that preceding vehicle detection performance has been improved.
OK or NG
OK >> Inspection End.
NG >> • Replace ICC sensor and perform laser beam aiming adjustment. Refer to ACS-55, "
ICC Sen-
sor".
• Perform ICC system running test. Refer to ACS-9, "
ICC System Running Test". Then perform
self-diagnosis of ICC system again.