2011 INFINITI QX56 sensor

DAS
U1514 STRG SEN CAN 3DAS-191
< DTC/CIRCUIT DIAGNOSIS > [DCA]
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U1514 STRG SEN CAN 3
DTC LogicINFOID:0000000006228163
DTC DETECTION LOGIC
NOTE:
If DTC “U1514” is detected along with DTC “U 1000”, first diagnose the DTC “U1000”. Refer to DAS-182,
"ADAS CONTROL UNIT : DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the DCA system ON.
3. Perform “All DTC Readi ng” with CONSULT-III.
4. Check if the “U1514” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1514” detected as the current malfunction?
YES >> Refer to DAS-191, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228164
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “U1514” in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1000” detected?
YES >> Perform the CAN communicati on system inspection. Repair or replace the malfunctioning parts.
Refer to DAS-182, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK ABS ACTUATOR AND ELECTRIC UNIT (C ONTROL UNIT) SELF-DIAGNOSIS RESULTS
Check if any DTC is detected in “Self Diagnostic Result” of “ABS”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
BRC-51, "
DTC Index".
NO >> Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
DTC
(On board dis-
play) Trouble diagnosis name DTC detecting condition Possible causes
U1514 (165) STRG SEN CAN CIRC 3 ADAS control unit detects an error signal that is
received from steering angle sensor via CAN
communication
Steering angle sensor
Revision: 2010 May2011 QX56

DAS-192
< DTC/CIRCUIT DIAGNOSIS >[DCA]
U1515 ICC SENSOR CAN 3
U1515 ICC SENSOR CAN 3
DTC LogicINFOID:0000000006228165
DTC DETECTION LOGIC
NOTE:
If DTC “U1515” is detected along with DTC “U
1000”, first diagnose the DTC “U1000”. Refer to DAS-182,
"ADAS CONTROL UNIT : DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the DCA system ON.
3. Perform “All DTC Reading” with CONSULT-III.
4. Check if the “U1515” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1515” detected as the current malfunction?
YES >> Refer to DAS-192, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228166
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected ot her than “U1515” in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1000” detected?
YES >> Perform the CAN communication system inspecti on. Repair or replace the malfunctioning parts.
Refer to DAS-182, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK ICC SENSOR SELF-DIAGNOSIS RESULTS
Check if any DTC is detected in “S elf Diagnostic Result” of “LASER”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
CCS-55, "
DTC Index".
NO >> Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
DTC
(On board dis-
play) Trouble diagnosis name DTC detecting condition Possible causes
U1515 (165) ICC SENSOR CAN
CIRC 3 ADAS control unit detects an error signal that is
received from ICC sensor via CAN communi-
cation
ICC sensor
Revision: 2010 May2011 QX56

DAS
DCA SYSTEM NOT ACTIVATED (SWITCH IS ON)DAS-201
< SYMPTOM DIAGNOSIS > [DCA]
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DCA SYSTEM NOT ACTIVA TED (SWITCH IS ON)
DescriptionINFOID:0000000006223655
The dynamic driver assistance switch can be tu rned ON/OFF, but the DCA system does not operate.
NOTE:
Never start the operation under the following conditions. No operation condition
 When the brake pedal depressed
 When the ICC system is set
 When the system judges that the vehicle co mes to a standstill by the system control
 When the vehicle ahead is not detected Operation cancellation condition
 When the dynamic driver assistance switch is turned to OFF
 When the system malfunction occurs
 When ABS or VDC (including the TCS) operates
 When the VDC is turned OFF
 When driving into a strong light (i.e., sunlight)
 When the ICC sensor body window is dirty and the measurement of the distance between the vehicles
becomes difficult
 When ABS warning lamp is ON
 When the SNOW mode switch is turned ON
 When the 4WD shift switch is not AUTO position
Diagnosis ProcedureINFOID:0000000006223656
1.CHECK CAUSE OF AUTOMATIC CANCELLATION
Check if there is any cancellation cause in the “CAUSE OF AUTO-CANCEL” on “WORK SUPPORT” of “ICC/
ADAS” with CONSULT-III.
Is it displayed?
Not displayed>>GO TO 2.
“OPE SW VOLT CIRC”>>Refer to DAS-138, "
DTC Logic".
“VHCL SPD UNMATCH”>>Refer to DAS-131, "
DTC Logic".
“IGN LOW VOLT”>>Refer to DAS-130, "
DTC Logic".
“CAN COMM ERROR”>>Refer to DAS-182, "
ADAS CONTROL UNIT : DTC Logic".
“ICC SENSOR CAN COMM ERR”>>Refer to DAS-177, "
DTC Logic".
“ABS/TCS/VDC CIRC”>>Refer to DAS-133, "
DTC Logic".
“APA HI TEMP”>>Refer to DAS-170, "
DTC Logic".
“ECD CIRCUIT”>>Refer to DAS-156, "
DTC Logic".
2.PERFORM ALL OF THE SELF-DIAGNOSIS
1. Perform “All DTC Reading”.
2. Check if any DTC is detected in self-d iagnosis results of “ICC/ADAS”. Refer to DAS-100, "
DTC Index".
Is any DTC detected?
YES >> GO TO 3.
NO >> GO TO 4.
3.REPAIR OR REPLACE MALFUNCTIONING PARTS
Repair or replace malfunctioning parts i dentified by the self-diagnosis result.
>> GO TO 6.
4.CHECK EACH SWITCH AND VEHICLE SPEED SIGNAL
1. Start the engine.
2. Check that the following items operate norma lly in “DATA MONITOR” of “ICC/ADAS”.
- “VHCL SPEED SE”
- “BRAKE SW”
- “DYNA ASIST SW”
Is there a malfunctioning item?
Revision: 2010 May2011 QX56

DAS-206
< SYMPTOM DIAGNOSIS >[DCA]
FREQUENTLY CANNOT DETECT THE VEHI
CLE AHEAD / DETECTION ZONE IS
SHORT
FREQUENTLY CANNOT DETECT TH E VEHICLE AHEAD / DETECTION
ZONE IS SHORT
DescriptionINFOID:0000000006223661
Symptom check: Detection function may bec ome unstable under the following conditions.
 When the reflector of vehicle ahead is broken or dirty.
 When the vehicle is driving on a curve such as S-curve where the curvature changes.
 When the vehicle is driving on up-and-down road or passi ng the peak or foot of slope or passing the break of
the inclination of hill.
Diagnosis ProcedureINFOID:0000000006223662
1.VISUAL CHECK (1)
Check ICC sensor body window for contamination and foreign materials.
Do foreign materials adhere?
YES >> GO TO 2.
NO >> GO TO 3.
2.WIPE OUT DIRT AND FOREIGN OBJECTS
Wipe out the contamination and/or foreign materials from the ICC sensor body window.
>> GO TO 7.
3.VISUAL CHECK (2)
Check ICC sensor body window for cracks and/or scratches.
Are there cracks?
YES >> GO TO 5.
NO >> GO TO 4.
4.LASER BEAM AIMING ADJUSTMENT
1. Adjust the laser beam aiming. Refer to CCS-72, "
Description".
2. Perform action test. Refer to DAS-128, "
Description".
3. Check that the vehicle ahead detection performance improves.
Does it improve?
YES >> INSPECTION END
NO >> GO TO 5.
5.REPLACE ICC SENSOR
1. Replace the ICC sensor. Refer to DAS-212, "
Exploded View".
2. Adjust the laser beam aiming. Refer to CCS-72, "
Description".
3. Perform action test. Refer to DAS-128, "
Description".
4. Check that the vehicle ahead detection performance improves.
Does it improve?
YES >> INSPECTION END
NO >> GO TO 6.
6.REPLACE ADAS CONTROL UNIT
Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
>> GO TO 7.
7.CHECK DCA SYSTEM
1. Erase “self-diagnosis result”, and then perform “All DTC Reading” again after performing the action test.
(Refer to DAS-128, "
Description" for action test.)
2. Check that the DCA system is normal.
Revision: 2010 May2011 QX56

DAS-208
< SYMPTOM DIAGNOSIS >[DCA]
THE SYSTEM DOES NOT DETECT
THE VEHICLE AHEAD AT ALL
THE SYSTEM DOES NOT DETECT THE VEHICLE AHEAD AT ALL
DescriptionINFOID:0000000006223663
When DCA system is active, the DCA system does not perform any control even through there is a vehicle
ahead.
Diagnosis ProcedureINFOID:0000000006223664
1.CHECK INFORMATION DISPLAY
1. Start the self-diagnosis mode of combination meter. Refer to MWI-29, "
On Board Diagnosis Function".
2. Check that the segment of informat ion display is displayed normally.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace the combination meter.
2.VISUAL CHECK (1)
Check ICC sensor body window for contamination and/or foreign materials.
Do foreign materials adhere?
YES >> GO TO 3.
NO >> GO TO 4.
3.WIPE OUT DIRT AND FOREIGN MATERIALS
Wipe out the contamination and/or foreign materials from the ICC sensor body window.
>> GO TO 8.
4.VISUAL CHECK (2)
Check ICC sensor body window for cracks and/or scratches.
Are there cracks?
YES >> GO TO 6.
NO >> GO TO 5.
5.LASER BEAM AIMING ADJUSTMENT
1. Adjust the laser beam aiming. Refer to CCS-72, "
Description".
2. Perform action test. Refer to DAS-128, "
Description".
3. Check that the vehicle ahead detection performance improves.
Does it improve?
YES >> INSPECTION END
NO >> GO TO 6.
6.REPLACE ICC SENSOR
1. Replace the ICC sensor. Refer to DAS-212, "
Exploded View".
2. Adjust the laser beam aiming. Refer to CCS-72, "
Description".
3. Perform action test. Refer to DAS-128, "
Description".
4. Check that the vehicle ahead detection performance improves.
>> GO TO 7.
7.REPLACE ADAS CONTROL UNIT
Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
>> GO TO 8.
8.CHECK DCA SYSTEM
1. Erase “self-diagnosis result”, and then perform “All DTC Reading” again after performing the action test.
(Refer to DAS-128, "
Description" for action test.)
Revision: 2010 May2011 QX56

DAS-210
< SYMPTOM DIAGNOSIS >[DCA]
NORMAL OPERATING CONDITION
NORMAL OPERATING CONDITION
DescriptionINFOID:0000000006223665
PRECAUTIONS FOR DISTANCE CONTROL ASSIST (DCA) SYSTEM
 If the vehicle ahead comes to a stop, the vehicle deceler
ates to a standstill within the limitations of the sys-
tem. The system will cancel once it judges that the vehi cle has come to a standstill with a warning chime. To
prevent the vehicle from moving, t he driver must depress the brake pedal.
 The DCA system will not apply brake control while the driver is depressing the accelerator pedal.
 This system is only an aid to assist the driver and is not a collision warning or avoidance device. It is the
driver's responsibility to stay alert, drive safe ly and be in control of the vehicle at all times.
 This system will not adapt automatically to road condi tions. Do not use the system on roads with sharp
curves, or on icy roads, in heavy rain or in fog.
 The distance sensor will not detect under most conditions.
- Stationary and slow moving vehicles
- Pedestrians or objects in the roadway
- Oncoming vehicles in the same lane
- Motorcycles traveling offset in the travel lane
 As there is a performance limit to the distance contro l function, never rely solely on the DCA system. This
system does not correct careless, inat tentive or absent-minded driving, or overcome poor visibility in rain,
fog, or other bad weather. Decelerate the vehi cle speed by depressing the brake pedal, depending on the
distance to the vehicle ahead and the surrounding circumstances in order to maintain a safe distance
between vehicles.
 The system may not detect the vehicle in front of own v ehicle in certain road or weather conditions. To avoid
accidents, never use the DCA system under the following conditions.
- On roads with sharp curves
- On slippery road surfaces such as on ice or snow, etc.
- On off-road surfaces such as on sand or rock, etc.
- During bad weather (rain, fog, snow, etc.)
- When strong light (for example, at sunrise or sunset) is directly shining on the front of the vehicle
- When rain, snow or dirt adhere to the system sensor
- On steep downhill roads (frequent braking may result in overheating the brakes)
- On repeated uphill and downhill roads
- When towing a trailer or other vehicle
 In some road or traffic conditions, a vehicle or objec t can unexpectedly come into the sensor detection zone
and cause automatic braking. Driver may need to control the distance from other vehicles using the acceler-
ator pedal. Always stay alert and avoid using the DCA system when it is not recommended in this section.
 The following are some conditions in which the sensor cannot detect the signals.
- When the reflector of the vehicle ahead is positioned high on the vehicle (trailer, etc.)
- When the reflector on the vehicle ahead is missing, damaged or covered
- When the reflector of the vehicle ahead is covered with dirt, snow and road spray
- When the snow or road spray from traveling vehicles reduces the sensor's visibility
- When dense exhaust or other smoke (black smoke) fr om vehicles reduces the sensor's visibility
- When excessively heavy baggage is loaded in the rear seat or the luggage room of own vehicle
 The DCA system is designed to autom atically check the sensor's operation. When the sensor is covered
with dirt or is obstructed, the system will automatically be canceled. If the sensor is covered with ice, a trans-
parent or translucent vinyl bag, etc., the DCA syste m may not detect them. In these instances, the DCA sys-
tem may not be able to decelerate the vehicle properly. Be sure to check and clean the sensor regularly.
 The DCA system is designed to help assist the driver to maintain a following distance from the vehicle
ahead. The system will decelerate as necessary and if the vehicle ahead comes to a stop, the vehicle decel-
erates to standstill. However, the DCA system can only apply up to 25% of the vehicles total braking power.
If a vehicle moves into the traveling lane ahead or if a vehicle traveling ahead rapidly decelerates, the dis-
tance between vehicles may become closer because t he DCA system cannot decelerate the vehicle quickly
enough. If this occurs, the DCA system will sound a warn ing chime and blink the system display to notify the
driver to take necessary action.
 The DCA system does not control vehicle speed or warn when driver approach stationary and slow moving
vehicles. Driver must pay attention to vehicle operat ion to maintain proper distance from vehicles ahead.
Revision: 2010 May2011 QX56

DAS
NORMAL OPERATING CONDITIONDAS-211
< SYMPTOM DIAGNOSIS > [DCA]
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 The detection zone of the sensor is limited. A vehicle ahead must be in the detection zone for the system to operate.
- A vehicle ahead may move outside of the detection zone due to its
position within the same lane of travel. Motorcycles may not be
detected in the same lane ahead if they are traveling offset from
the center line of the lane. A vehicle that is entering the lane ahead
may not be detected until the vehicle has completely moved into
the lane. If this occurs, the system may warn driver by blinking the
system indicator and sounding the chime. The driver may have to
manually control the proper distance away from vehicle traveling
ahead.
- When driving on some roads, such as winding, hilly, curved, nar- row roads, or roads which are under construction, the sensor may
detect vehicles in a different lane, or may temporarily not detect a
vehicle traveling ahead. This may cause the system to work inap-
propriately. The detection of vehicles may also be affected by vehi-
cle operation (steering maneuver or traveling position in the lane,
etc.) or vehicle condition. If this occurs, the system may warn
driver by blinking the system indicator and sounding the chime
unexpectedly. The driver will have to manually control the proper
distance away from the vehicle traveling ahead.
 The approach warning chime may sound and the system display may blink when the sensor detects some reflectors which are fitted
on vehicles in other lanes or on the side of the road. This may
cause the DCA system to operate inappropriately. The sensor may
detect these reflectors when the vehicle is driven on winding
roads, hilly roads or when entering or exiting a curve. The sensor
may also detect reflectors on narrow roads or in road construction
zones. In these cases driver will have to manually control the
proper distance ahead of own vehicle. Also, the sensor sensitivity
can be affected by vehicle operation (steering maneuver or driving
position in the lane) or traffic or vehicle condition (for example, if a
vehicle is being driven with some damage).
 The DCA system automatically dec elerates own vehicle to help
assist the driver to maintain a following distance from the vehicle
ahead. Manually brake when deceleration is required to maintain a safe distance upon sudden braking by
the vehicle ahead or when a vehicle suddenly appears in front of own vehicle. Always stay alert when using
the DCA system.
 When the vehicle ahead detection indicator lamp is not illum inated, system will not control or warn the driver.
 Never place a foot under the brake pedal. A foot may be caught when the system controls the brake.
 Depending on the position of the accelerator pedal, the system may not be able to assist the driver to
release the accelerator pedal appropriately.
 If the vehicle ahead comes to a standstill, the vehicle decel erates to a standstill within the limitations of the
system. The system will rel ease brake control with a warning chime once it judges the vehicle is at a stand-
still. To prevent the vehicle from moving, the driv er must depress the brake pedal. [The system will resume
control automatically once the system reaches 5 km/h (3 MPH)].
JPOIA0221ZZ
JPOIA0220ZZ
Revision: 2010 May2011 QX56

DAS-212
< REMOVAL AND INSTALLATION >[DCA]
ICC SENSOR
REMOVAL AND INSTALLATION
ICC SENSOR
Exploded ViewINFOID:0000000006228177
CAUTION:
Always perform the laser beam aiming adjustme
nt and check the operation after the replacement,
removal and installati on of ICC sensor.
Removal and InstallationINFOID:0000000006228178
REMOVAL
1. Remove front under cover. Refer to EXT-25, "Exploded View".
2. Disconnect the connector of ICC sensor.
3. Remove the bolts.
4. Remove ICC sensor from front bumper reinforcement. NOTE:
Remove ICC sensor from under the bumper.
INSTALLATION
Install in the reverse order of removal.
CAUTION:
Always perform the laser beam aiming adjustme nt and check the operation after the replacement,
removal, and installation of ICC sensor. Refer to CCS-71, "
Description".
1. ICC sensor 2. Front bumper reinforcement
JSOIA0363ZZ
Revision: 2010 May2011 QX56