turn signal INFINITI QX56 2011 Factory Service Manual

DAS
U1516 CAM CAN 3DAS-385
< DTC/CIRCUIT DIAGNOSIS > [LDW & LDP]
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U1516 CAM CAN 3
DTC LogicINFOID:0000000006223819
DTC DETECTION LOGIC
NOTE:
If DTC “U1516” is detected along with DTC “U 1000”, first diagnose the DTC “U1000”. Refer to DAS-374,
"ADAS CONTROL UNIT : DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the LDP system ON.
3. Perform “All DTC Readi ng” with CONSULT-III.
4. Check if the “U1516” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1516” detected as the current malfunction?
YES >> Refer to DAS-385, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006223820
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “U1516” 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-374, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK LANE CAMERA UNIT SELF-DIAGNOSIS RESULTS
Check if any DTC is detected in “Sel f Diagnostic Result” of “LANE CAMERA”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
DAS-316, "
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
U1516 (166) CAM CAN CIRC 3 ADAS control unit detects an error signal that is
received from lane camera unit via ITS com-
munication
Lane camera unit
Revision: 2010 May2011 QX56

DAS-386
< DTC/CIRCUIT DIAGNOSIS >[LDW & LDP]
U1520 4WD CAN 3
U1520 4WD CAN 3
DTC LogicINFOID:0000000006228220
DTC DETECTION LOGIC
NOTE:
If DTC “U1520” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to
CCS-145,
"ADAS CONTROL UNIT : DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the LDP system ON.
3. Perform “All DTC Reading” with CONSULT-III.
4. Check if the “U1520” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1520” detected as the current malfunction?
YES >> Refer to DAS-386, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228221
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected ot her than “U1520” 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-374, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK TRANSFER CONTROL UNI T SELF-DIAGNOSIS RESULTS
Check if any DTC is detected in “Self Diagnostic Result” of “ALL MODE AWD/4WD”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
DLN-29, "
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
U1520 (176) 4WD CAN CIRC 3 ADAS control unit detects an error signal that is
received from transfer control unit via CAN
communication
Transfer control unit
Revision: 2010 May2011 QX56

DAS
WARNING SYSTEMS SWITCH CIRCUITDAS-389
< DTC/CIRCUIT DIAGNOSIS > [LDW & LDP]
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WARNING SYSTEMS SWITCH CIRCUIT
Component Function CheckINFOID:0000000006223825
1.CHECK WARNING SYSTEMS SWITCH INPUT SIGNAL
1. Turn the ignition switch ON.
2. Select the DATA MONITOR item “WARN SYS SW” of “ICC/ADAS” with CONSULT-III.
3. With operating the warning systems switch, check the monitor status.
Is the inspection result normal?
YES >> Warning systems switch circuit is normal.
NO >> Refer to DAS-389, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006223826
1.CHECK WARNING SYSTEMS SWITCH SIGNAL INPUT
1. Turn the ignition switch ON.
2. Check voltage between ADAS control unit harness connector and ground.
Is the inspection result normal?
YES >> Replace the ADAS control unit. Refer to DAS-63, "Removal and Installation".
NO >> GO TO 2.
2.CHECK WARNING SYSTEMS SWITCH
1. Turn ignition switch OFF.
2. Remove warning systems switch.
3. Check warning systems switch. Refer to DAS-390, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace the warning systems switch. Refer to DAS-404, "
Removal and Installation".
3.CHECK WARNING SYSTEMS SWITCH GROUND CIRCUIT
Check continuity between twin switch harness connector terminal and the ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair harness or connector.
4.CHECK WARNING SYSTEM S SWITCH SIGNAL INPUT CIRCUIT FOR OPEN
1. Disconnect the ADAS control unit connector.
Monitor item Condition Monitor status
WARN SYS
SW Warning systems switch is pressed On
Warning systems switch is not pressed OFF
Te r m i n a l s
Condition
Vo l ta g e
(Approx.)
(+) (
−)
ADAS control unit
GroundWarning
systems switch
Connector Terminal
B61 1 Pressed 0 V
Released 12 V
Twin switch GroundContinuity
Connector Terminal
M127 3 Existed
Revision: 2010 May2011 QX56

DAS
WARNING SYSTEMS ON INDICATOR CIRCUITDAS-391
< DTC/CIRCUIT DIAGNOSIS > [LDW & LDP]
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WARNING SYSTEMS ON INDICATOR CIRCUIT
Component Function CheckINFOID:0000000006223828
1.CHECK WARNING SYSTEMS ON INDICATOR
1. Turn the ignition switch ON.
2. Select the active test item “WARNING SY STEM IND” of “ICC/ADAS” with CONSULT-III.
3. With operating the test item, check the operation.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Refer to DAS-391, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006223829
1.CHECK WARNING ON INDICATOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect twin switch connector.
3. Turn ignition switch ON.
4. Check voltage between twin switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the warning systems ON indicator power supply circuit.
2.CHECK WARNING SYSTEMS ON INDICATOR SIGNAL FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect the ADAS control unit harness connector.
3. Check continuity between the ADAS control uni t harness connector and twin switch harness connector.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair the harnesses or connectors.
3.CHECK WARNING SYSTEMS ON INDI CATOR SIGNAL CIRCUIT FOR SHORT
Check continuity between the ADAS control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4. On : Warning systems ON indicator illuminates
Off : Warning systems ON in
dicator is turned OFF
Te r m i n a l s
Vo l ta g e
(Approx.)
(+) (
−)
Twin switch Ground
Connector Terminal
M127 8 Battery voltage
ADAS control unit Twin switch Continuity
Connector Terminal Connector Terminal
B61 4 M127 9 Existed
ADAS control unit
GroundContinuity
Connector Terminal
B61 4 Not existed
Revision: 2010 May2011 QX56

DAS
WARNING BUZZER CIRCUITDAS-393
< DTC/CIRCUIT DIAGNOSIS > [LDW & LDP]
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WARNING BUZZER CIRCUIT
Component Function CheckINFOID:0000000006223831
1.CHECK WARNING BUZZER
1. Turn the ignition switch ON.
2. Select the active test item “LDP BU ZZER” of “ICC/ADAS” with CONSULT-III.
3. With operating the test item, check the operation.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Refer to DAS-393, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006223832
1.CHECK WARNING BUZZER POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the warning buzzer connector.
3. Turn ignition switch ON.
4. Check voltage between the warning buzzer harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the warning buzzer power supply circuit.
2.CHECK WARNING BUZZER GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between the warning buzzer harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair the harnesses or connectors.
3.CHECK WARNING BUZZER SIGNAL CIRCUIT FOR OPEN
1. Disconnect the ADAS control unit connector.
2. Check continuity between the ADAS control uni t harness connector and warning buzzer harness connec-
tor.
Is the inspection result normal?
On : Warning buzzer is activated.
Off : Warning buzzer is not activated.
Te r m i n a l s Vo l ta g e
(Approx.)
(+) (
−)
Warning buzzer Ground
Connector Terminal
M94 1 Battery voltage
Warning buzzer GroundContinuity
Connector Terminal
M94 3 Existed
ADAS control unit Warning buzzer Continuity
Connector Terminal Connector Terminal
B61 12 M94 2 Existed
Revision: 2010 May2011 QX56

DAS-394
< DTC/CIRCUIT DIAGNOSIS >[LDW & LDP]
WARNING BUZZER CIRCUIT
YES >> GO TO 4.
NO >> Repair the harnesses or connectors.
4.CHECK WARNING BUZZER SIGNAL CIRCUIT FOR SHORT
Check continuity between the ADAS control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair the harnesses or connectors.
5.CHECK WARNING BUZZER OPERATION
1. Connect the warning buzzer connector.
2. Turn ignition switch ON.
3. Apply ground to warning buzzer terminal 2.
4. Check condition of the warning buzzer.
Does warning buzzer sound?
YES >> Replace the ADAS control unit.
NO >> Replace the warning buzzer.
ADAS control unit
GroundContinuity
Connector Terminal
M61 12 Not existed
Revision: 2010 May2011 QX56

DAS-396
< SYMPTOM DIAGNOSIS >[LDW & LDP]
LDW & LDP SYSTEM SYMPTOMS
LDP system is not activated.
(LDW system is functioning nor-
mally)Indicator lamp is not turned
ON
⇔ OFF when operating
dynamic driver assistance
switch  Dynamic driver assistance
switch
 Combination meter
 ADAS control unit
 AV control unit  Dynamic driver assistance
switch (ICC steering switch)
Refer to DAS-354, "
Compo-
nent Inspection"
 LDP system setting can not be
turned ON/OFF on the naviga-
tion screen
Refer to DAS-400, "
Descrip-
tion"
Warning is functioning but
yawing is not functioning. — Cause of auto-cancel 2
Refer to DAS-291
 Normal operating condition
Refer to DAS-401
Warning functions are not timely
(Example)
 Does not function when driving on lane markers
 Functions when driving in a lane
 Functions in a different position from the actual position.  Camera aiming adjustment
 Lane camera unit
 ADAS control unit
Camera aiming adjustment
DAS-340, "
Description"
Functions when changing the course in direction of the turn sig-
nal Turn indicator signal (CAN)
BCM
 ADAS control unitSystem operates even when us-
ing turn signal
Refer to
DAS-399, "
Description"
Symptom Possible cause Inspection item/Reference page
Revision: 2010 May2011 QX56

DAS
THE SYSTEM OPERATES EVEN WHEN USING TURN SIGNAL
DAS-399
< SYMPTOM DIAGNOSIS > [LDW & LDP]
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THE SYSTEM OPERATES EVEN WH EN USING TURN SIGNAL
DescriptionINFOID:0000000006223838
The warning of Lane Departure Warning (LDW) and Lane Departure Prevention (LDP) and the yaw moment
control are activated during the use of a turn signal.
NOTE:
For the operational conditions of Lane Departure Warn ing (LDW) and Lane Departure Prevention (LDP), refer
to the following descriptions.
LDW: DAS-277, "
LANE DEPARTURE WARNING (LDW ) SYSTEM : System Description"
LDP: DAS-280, "LANE DEPARTURE PREVENTION (L DP) SYSTEM : System Description"
Diagnosis ProcedureINFOID:0000000006223839
1.CHECK TURN SIGNAL OPERATION
Check that both right and left turn signals are normal.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace malfunctioning parts. Refer to EXL-113, "
Symptom Table".
2.CHECK SELF-DIAGNOSIS RESULTS
1. Perform “All DTC R eading” with CONSULT-III.
2. Check if the DTC is detected in self-d iagnosis results of “ICC/ADAS” Refer to DAS-310, "
DTC Index".
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and re pair or replace the malfunctioning parts.
NO >> Replace ADAS control unit. Refer to DAS-63, "
Removal and Installation".
Revision: 2010 May2011 QX56

DAS
NORMAL OPERATING CONDITIONDAS-401
< SYMPTOM DIAGNOSIS > [LDW & LDP]
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NORMAL OPERATING CONDITION
DescriptionINFOID:0000000006223842
PRECAUTIONS FOR LANE DEPARTURE WARNING (LDW)
 LDW system is only a warning devic e to inform the driver of a potential unintended lane departure. It will not
steer the vehicle or prevent loss of c ontrol. It is the driver’s responsibility to stay alert, drive safely, keep the
vehicle in the traveling lane, and be in control of the vehicle at all times.
 LDW system will not operate at s peeds below approximately 70 km/h (45 MPH) or if it cannot detect lane
markers.
 Excessive noise will interfere with the warning chime sound, and the chime may not be heard.
 LDW system may not function properly under the following conditions:
- On roads where there are multiple parallel lane marker s; lane markers that are faded or not painted clearly;
yellow painted lane markers; non-standard lane markers; or lane markers covered with water, dirt or snow,
etc.
- On roads where the discontinued lane markers are still detectable.
- On roads where there are sharp curves.
- On roads where there are sharply contrasting objects, such as shadows, snow, water, wheel ruts, seams or
lines remaining after road repairs. (The LDW syst em could detect these items as lane markers.)
- On roads where the traveling lane merges or separates.
- When the vehicle's traveling direction does not align with the lane marker.
- When traveling close to other vehicle in front of the vehicle, which obstructs the lane camera unit detection
range.
- When rain, snow or dirt adheres to the windshield in front of the lane camera unit.
- When the headlights are not bright due to dirt on the lens or if the aiming is not adjusted properly.
- When strong light enters the lane camera unit. (For example, the light directly shines on the front of the vehi-
cle at sunrise or sunset.)
- When a sudden change in brightness occurs. (For exampl e, when the vehicle enters or exits a tunnel or
under a bridge.)
PRECAUTIONS FOR LANE DEPARTURE PREVENTION (LDP)
 LDP system will not steer the vehicle or prevent loss of control. It is the driver’s responsibility to stay alert,
drive safely, keep the vehicle in the traveling lane, and be in control of vehicle at all times.
 LDP system is primarily intended for use on well-devel oped freeways or highways. It may not detect the lane
markers in certain roads, weather or driving conditions.
 Using the LDP system under some conditions of road, lane marker or weather, or when driver change lanes
without using the turn signal could lead to an unexpect ed system operation. In such conditions, driver needs
to correct the vehicle's direction with dr iver's steering operation to avoid accidents.
 When the LDP system is operating, avoid excessive or sudden steering maneuvers. Otherwise, driver could
lose control of the vehicle.
 The LDP system will not operate at speeds below approximat ely 70 km/h (45 MPH) or if it cannot detect lane
markers.
 The LDP system may not function properly under the following conditions, and do not use the LDP system:
- During bad weather (rain, fog, snow, wind, etc.).
- When driving on slippery roads, such as on ice or snow, etc.
- When driving on winding or uneven roads.
- When there is a lane closure due to road repairs.
- When driving in a makeshift lane.
- When driving on roads where the lane width is too narrow.
- When driving with a tire that is not within normal tire c onditions (for example, tire wear, low tire pressure,
installation of spare tire, tire chains, non-standard wheels).
- When the vehicle is equipped with non-origi nal brake parts or suspension parts.
 Excessive noise will interfere with the warning chime sound, and the chime may not be heard.
 The functions of the LDP system (warning and brake control assist) may or may not operate properly under
the following conditions:
- On roads where there are multiple parallel lane marker s; lane markers that are faded or not painted clearly;
yellow painted lane markers; non-standard lane markers or lane markers covered with water, dirt or snow,
etc.
- On roads where discontinued lane markers are still detectable.
- On roads where there are sharp curves.
Revision: 2010 May2011 QX56

DAS
COMPONENT PARTSDAS-409
< SYSTEM DESCRIPTION > [BSW]
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Component DescriptionINFOID:0000000006223850
A. Rear bumper removed condition B. Rear bumper removed condition C. Instrument lower panel (LH)
D. Behind of instrument lower panel (LH)
Component Description
ADAS control unit  Being connected with side radar (LH and RH) via ITS communication, receives vehicle detection
signal and transmits BSW indicator signal and BSW indicator dimmer signal to side radar
 Activates the warning buzzer and warning systems ON indicator
Side radar LH/ RH  Being connected with ADAS control unit via ITS communication, transmits vehicle detection sig-
nal
 Receives BSW indicator signal and BSW indicator dimmer signal from ADAS control unit and transmits an indicator operation signal to BSW indicator LH/RH
 RH side radar equips right/left switching signal circuit for identifying LH or RH because the parts
of side radar are common for right and left
BSW indicator LH/ RH Receives BSW indicator operation signal from side radar LH/RH and turns OFF, turns ON or blinks
ABS actuator and electric unit
(control unit) Transmits vehicle speed signal to ADAS control unit via CAN communication
Warning systems switch Inputs the switch signal to ADAS control unit
Warning systems ON indicator
(On the warning systems switch) Indicates BSW system status
Warning buzzer Receives buzzer signal from ADAS control unit and sounds buzzer.
Combination meter  Receives BSW warning lamp signal via CAN communication
 Turns the BSW warning lamp ON/OFF according to the signals from the ADAS control unit via
CAN communication
BCM  Transmits turn indicator signal to ADAS control unit via CAN communication
 Transmits dimmer signal to ADAS control unit via CAN communication
TCM Transmits the shift position signal to ADAS control unit via CAN communication
Revision: 2010 May2011 QX56