2011 INFINITI QX56 warning

DAS-316
< ECU DIAGNOSIS INFORMATION >[LDW & LDP]
LANE CAMERA UNIT
 If the vehicle is parked in direct sunlight under
high temperature conditions, the system may be deactivated
automatically. And the buzzer sounds and lane departure warning lamp (yellow) in the combination meter
will blinks.
 When interior temperature is reduced, the system will resume when dynamic driver assistance switch is
turned OFF and turned ON and the lane departure warning lamp (yellow) in the combination meter will stop
blinking.
DTC Inspection Priority ChartINFOID:0000000006223724
If multiple DTCs are detected simultaneously, chec k them one by one depending on the following DTC inspec-
tion priority chart.
DTC IndexINFOID:0000000006223725
× : Applicable
Priority Detected items (DTC)
1  U1000: CAN COMM CIRCUIT
 U1010: CONTROL UNIT (CAN)
2 C1A50: ADAS MALFUNCTION
3  C1B01: CAM AIMING INCMP
 C1B03: ABNRML TEMP DETECT
 U0104: ADAS CAN CIR1
 U0126: STRG SEN CAN CIR1
 U0405: ADAS CAN CIR2
 U0428: STRG SEN CAN CIR2
4 C1B00: CAMERA UNIT MALF
DTC Lane departure warning
lamp (yellow) Fail-safe Reference
C1A50 ADAS MALFUNCTION ON — DAS-381
C1B00 CAMERA UNIT MALF ON×DAS-361
C1B01 CAM AIMING INCMP ON ×DAS-363
C1B03 ABNRML TEMP DETECT Blink ×DAS-365
U0104 ADAS CAN CIR1 ON ×DAS-366
U0126 STRG SEN CAN CIR1 ON ×DAS-368
U0405 ADAS CAN CIR2 ON ×DAS-371
U0428 STRG SEN CAN CIR2 ON ×DAS-373
U1000 CAN COMM CIRCUIT ON ×DAS-374
U1010 CONTROL UNIT (CAN) ON ×DAS-376
Revision: 2010 May2011 QX56

DAS
DIAGNOSIS AND REPAIR WORK FLOWDAS-333
< BASIC INSPECTION > [LDW & LDP]
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>> GO TO 2.
2.SELF-DIAGNOSIS WITH CONSULT-III
1. Perform “All DTC Reading” with CONSULT-III.
2. Check if the DTC is detected on the self-diagnosis results of “ICC/ADAS” and/or “LANE CAMERA”.
Is any DTC detected?
YES >> GO TO 5.
NO >> GO TO 3.
3.PRE-INSPECTION FOR DIAGNOSIS
Perform pre-inspection for diagnosis. Refer to DAS-335, "
Inspection Procedure".
>> GO TO 4.
4.ACTION TEST
Perform LDW/LDP system action test to check the operation status. Refer to DAS-336, "
Description".
>> GO TO 6.
5.TROUBLE DIAGNOSIS BY DTC
Perform trouble diagnosis for the detected DTC. Specify a malfunctioning part. Refer to DAS-310, "
DTC Index"
(ICC/ADAS) and/or DAS-316, "DTC Index" (LANE CAMERA).
>> GO TO 7.
6.SYMPTOM DIAGNOSIS
Perform symptom diagnosis. Specify malfunctioning part. Refer to DAS-395, "
Symptom Table".
>> GO TO 7.
7.MALFUNCTION PART REPAIR
Repair or replace the identified malfunctioning parts.
>> GO TO 8.
8.REPAIR CHECK (SELF-DIAGNOSIS WITH CONSULT-III)
Perform self-diagnosis with CONSULT-II I. Check that any DTC is not detected. Erase DTC if DTC is detected
before the repair. Check that DTC is not detected again.
Is any DTC detected?
YES >> GO TO 5.
NO >> GO TO 9.
9.REPAIR CHECK (ACTION TEST)
Perform LDW/LDP system action test . Also check the system operation.
Does it operate normally?
YES >> INSPECTION END
NO >> GO TO 4.
Diagnostic Work SheetINFOID:0000000006223728
DESCRIPTION
In general, each customer feels differently about an inci dent. It is important to fully understand the symptoms
or conditions for a customer complaint.
There are many operating conditions that lead to the malfunction. A good grasp of such conditions can make
troubleshooting faster and more accurate.
Some conditions may cause the lane departure warning lamp to stay ON.
Revision: 2010 May2011 QX56

DAS-336
< BASIC INSPECTION >[LDW & LDP]
ACTION TEST
ACTION TEST
DescriptionINFOID:0000000006223730
 Perform action test to verify the customer's concern.
 Perform action test and check the syst
em operation after system diagnosis.
WARNING:
Be careful of traffic conditions and safety ar ound the vehicle when performing road test.
CAUTION:
 Fully understand the following it ems well before the road test;
- Precautions: Refer to DAS-273, "
Precaution for LDW/LDP System Service".
- System description for LDW: Refer to DAS-277, "
LANE DEPARTURE WARNING (LDW) SYSTEM :
System Description".
- System description for LDP: Refer to DAS-280, "
LANE DEPARTURE PREVENTION (LDP) SYSTEM :
System Description".
- Handling precaution: Refer to DAS-288, "
Precautions for Lane Departure Warning/Lane Departure
Prevention".
Inspection ProcedureINFOID:0000000006223731
WARNING:
Be careful of traffic conditions and safety ar ound the vehicle when performing road test.
CAUTION:
 Fully understand the following it ems well before the road test;
- Precautions: Refer to DAS-273, "
Precaution for LDW/LDP System Service".
- System description for LDW: Refer to DAS-277, "
LANE DEPARTURE WARNING (LDW) SYSTEM :
System Description".
- System description for LDP: Refer to DAS-280, "
LANE DEPARTURE PREVENTION (LDP) SYSTEM :
System Description".
- Handling precaution: Refer to DAS-288, "
Precautions for Lane Departure Warning/Lane Departure
Prevention".
1.ACTION TEST FOR LDW
1. Drive the vehicle.
2. Turn warning systems switch ON (w arning systems ON indicator is ON).
NOTE:
LDP system is OFF.
3. Check the LDW operation according to the following table.
NOTE:
Vehicle condition/ Driver's operation Action Warning sys-
tems ON indi- cator Indication on the combination
meter Buzzer
Less than
Approx. 60 km/h (40 MPH) Close to lane marker No action ON OFF —
Approx. 70 km/h (45 MPH) or more Close to lane marker
Warning
 Buzzer sounds
 Warning lamp
blinks ON
Short contin-
uous beeps
 Close to lane marker
 Turn signal ON (Deviate side) No action ON OFF —
JPOIA0018GB
Revision: 2010 May2011 QX56

DAS
ACTION TESTDAS-337
< BASIC INSPECTION > [LDW & LDP]
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After the operating conditions of warning are satisf ied, the warning continues until the vehicle speed
reaches approximately 60 km/h (40 MPH). Refer to DAS-277, "
LANE DEPARTURE WARNING (LDW)
SYSTEM : System Description".
>> GO TO 2.
2.CHECK LDP SYSTEM SETTING
1. Start the engine.
2. Check that the LDP system setting can be enabled/disabled on the navigation screen.
3. Turn OFF the ignition switch and wait for 30 seconds or more.
4. Check that the previous setting is saved when the engine starts again.
>> GO TO 3.
3.ACTION TEST FOR LDP
1. Enable the setting of the LDP system on the navigation screen.
2. Turn dynamic driver assistance switch ON (LDP ON indicator lamp is ON).
NOTE:
LDW system is OFF.
3. Check the LDP operation according to the following table.
Vehicle condition/ Driver's operation Action Indication on the combination meter Buzzer
Less than Ap- prox. 60 km/h
(40 MPH) Close to lane marker No action —
JPOIA0021GB
Revision: 2010 May2011 QX56

DAS-338
< BASIC INSPECTION >[LDW & LDP]
ACTION TEST
NOTE:
After the operating conditions are satisfied, the c
ontrol continues until the vehicle speed reaches approxi-
mately 60 km/h (40 MPH). Refer to DAS-280, "
LANE DEPARTURE PREVENTION (LDP) SYSTEM : System
Description".
>> INSPECTION END
Approx. 70 km/h (45
MPH) or more Close to lane marker
Warning and yawing
 Buzzer sounds
 Warning lamp blinks
 Brake control Short continu-
ous beeps
 Close to lane marker
 Turn signal ON (Deviate side) No action —
Close to lane marker with
soft braking Warning
 Buzzer sounds
 Warning lamp blinks Short continu-
ous beeps
 VDC OFF Switch OFF ⇒ ON
(VDC system ON ⇒
OFF)
 SNOW mode switch
OFF ⇒ ON
 4WD shift switch is in the 4H or 4L Cancellation
 Buzzer sounds
 Indicator lamp blinks
NOTE:
When dynamic driver assis-
tance switch is ON
⇒ OFF, in-
dicator lamp is turned OFF. Beep
Vehicle condition/ Driver's operation Action Indication on the combination meter Buzzer
JPOIA0022GB
JPOIA0021GB
JPOIA0022GB
JPOIA0023GB
Revision: 2010 May2011 QX56

DAS
C1A03 VEHICLE SPEED SENSORDAS-347
< DTC/CIRCUIT DIAGNOSIS > [LDW & LDP]
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C1A03 VEHICLE SPEED SENSOR
DTC LogicINFOID:0000000006223743
DTC DETECTION LOGIC
NOTE:
If DTC “C1A03” is detected along with DTC “U1000” or “C1A04”, first diagnose the DTC “U1000” or “C1A04”.
 Refer to DAS-374, "
ADAS CONTROL UNIT : DTC Logic" for DTC “U1000”.
 Refer to DAS-348, "
DTC Logic" for DTC “C1A04”.
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the LDP system ON.
3. Drive the vehicle at 30 km/h (19 MPH) or more. CAUTION:
Always drive safely.
4. Stop the vehicle.
5. Perform “All DTC Readi ng” with CONSULT-III.
6. Check if the “C1A03” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A03” detected as the current malfunction?
YES-1 (Lane departure warning lamp: ON)>>Refer to DAS-347, "Diagnosis Procedure".
YES-2 (Lane departure warning lamp: OFF)>>Refer to CCS-87, "
Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006223744
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “C1A04” or “U1000” is detected other than “C1A03” in “Self Diagnostic Result” of “ICC/ADAS”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
DAS-310, "
DTC Index".
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
display) Trouble diagnosis
name DTC detecting condition Possible causes
C1A03 (3) VHCL SPEED SE
CIRC If the vehicle speed signal (wheel speed) from
ABS actuator and electric unit (control unit) re-
ceived by the ADAS control unit via CAN com-
munication, are inconsistent  Wheel speed sensor
 ABS actuator and electric unit (control
unit)
 ADAS 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-390
< DTC/CIRCUIT DIAGNOSIS >[LDW & LDP]
WARNING SYSTEMS SWITCH CIRCUIT
2. Check continuity between the ADAS control unit harness connector and twin switch harness connector.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair the harnesses or connectors.
5.CHECK WARNING SYSTEMS SWITCH SI
GNAL INPUT CIRCUIT FOR SHORT
Check continuity between the 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 >> Repair the harnesses or connectors.
Component InspectionINFOID:0000000006223827
1.CHECK WARNING SYSTEMS SWITCH
Check continuity of warning systems switch.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace warning systems switch.
ADAS control unit Twin switch Continuity
Connector Terminal Connector Terminal
B61 1 M127 2 Existed
ADAS control unit GroundContinuity
Connector Terminal
B61 1 Not existed
Terminal Condition Continuity
23 When warning systems switch is pressed Existed
When warning systems switch is released Not existed
Revision: 2010 May2011 QX56