ignition INFINITI QX56 2011 Factory Service Manual

DAS-304
< ECU DIAGNOSIS INFORMATION >[LDW & LDP]
ADAS CONTROL UNIT
VHCL SPEED SE While driving Displays the ve-
hicle speed cal-
culated by
ADAS control unit
SET VHCL SPD While driving When vehicle speed is set Displays the set
vehicle speed
BUZZER O/P Engine running When the buzzer of the following system operates
 Vehicle-to-vehicle distance control mode
 DCA system
 FCW system
 IBA system
On
When the buzzer of the following system not operates
 Vehicle-to-vehicle distance control mode
 DCA system
 FCW system
 IBA system Off
THRTL SENSOR NOTE:
The item is indicated, but not monitored
0.0
ENGINE RPM Engine running Equivalent to ta-
chometer read- ing
WIPER SW Ignition switch ON Wiper not operating Off
Wiper LO operation Low
Wiper HI operation High
YAW R AT E NOTE:
The item is indicated, but not monitored
0.0
BA WARNING Engine running IBA OFF indicator lamp ON
 When IBA system is malfunctioning
 When IBA system is turned to OFF
On
IBA OFF indicator lamp OFF
 When IBA system is normal
 When IBA system is turned to ON Off
STP LMP DRIVE Drive the vehicle and activate
the vehicle-to-vehicle distance
control mode When ICC brake hold relay is activated On
When ICC brake hold relay is not activated Off
D RANGE SW Engine running When the selector lever is in “D” position or manual
mode
On
When the selector lever is in any position other than “D”
or manual mode Off
NP RANGE SW Engine running When the selector lever is
in “N”, “P” position On
When the selector lever is in any position other than “N”,
“P” Off
PKB SW Ignition switch ON When the parking brake is applied On
When the parking brake is released Off
PWR SUP MONI Engine running Power supply
voltage value of ADAS control unit
VHCL SPD AT While driving Va l u e o f A / T v e -
hicle speed sen- sor signal
THRTL OPENING Engine running Depress accelerator pedal Displays the
throttle position
Monitor item Condition Value/Status
Revision: 2010 May2011 QX56

DAS
ADAS CONTROL UNITDAS-305
< ECU DIAGNOSIS INFORMATION > [LDW & LDP]
C
D
E
F
G H
I
J
K L
M B
N P A
GEAR While driving Displays the
gear position
MODE SIG Start the engine and press
MAIN switch When ICC system is deactivated Off
When vehicle-to-vehicle distance control mode is acti-
vated
ICC
When conventional (fixed speed) cruise control mode is
activated ASCD
SET DISP IND  Drive the vehicle and acti-
vate the conventional (fixed
speed) cruise control mode
 Press SET/COAST switch SET switch indicator ON On
SET switch indicator OFF Off
DISTANCE Drive the vehicle and activate
the vehicle-to-vehicle distance
control mode When a vehicle ahead is detected
Displays the dis-
tance from the
preceding vehi- cle
When a vehicle ahead is not detected 0.0
RELATIVE SPD Drive the vehicle and activate
the vehicle-to-vehicle distance
control mode When a vehicle ahead is detected
Displays the rel-
ative speed.
When a vehicle ahead is not detected 0.0
DYNA ASIST SW Ignition switch ON When dynamic driver assistance switch is pressed On
When dynamic driver assistance switch is not pressed Off
DCA ON IND Start the engine and press dy-
namic driver assistance switch
(When DCA setting is ON) DCA system OFF
(DCA system switch indicator OFF)
Off
DCA system ON
(DCA system switch indicator ON) On
DCA VHL AHED Drive the vehicle and activate
the DCA system When a vehicle ahead is not detected (vehicle ahead
detection indicator OFF)
Off
When a vehicle ahead is detected (vehicle ahead de-
tection indicator ON) On
IBA SW Ignition switch ON When the IBA OFF switch is pressed On
When the IBA OFF switch is not pressed Off
FCW SYSTEM ON Ignition switch ON When the FCW system is ON
(Warning systems ON indicator ON)
On
When the FCW system is OFF
(Warning systems ON indicator OFF) Off
APA TEMP Engine running Display the ac-
celerato
r pedal
actuator inte- grated motor temperature
APA PWR Ignition switch ON Power supply
voltage value of
accelerator ped- al actuator
LDW SYSTEM ON Ignition switch ON When the LDW system is ON
(Warning systems ON indicator ON)
On
When the LDW system is OFF
(Warning systems ON indicator OFF) Off
LDW ON LAMP Ignition switch ON Warning systems ON indicator ON On
Warning systems ON indicator OFF Off
Monitor item Condition Value/Status
Revision: 2010 May2011 QX56

DAS-306
< ECU DIAGNOSIS INFORMATION >[LDW & LDP]
ADAS CONTROL UNIT
LDP ON INDStart the engine and press dy-
namic driver assistance switch
(When LDP system setting is
ON) LDP ON indicator lamp ON On
LDP ON indicator lamp OFF Off
LANE DPRT W/L Drive the vehicle and activate
the LDW system or LDP sys-
tem Lane departure warning lamp ON On
Lane departure warning lamp OFF Off
LDW BUZER OUT-
PUT Drive the vehicle and activate
the LDW/LDP system or BSW
system When the buzzer of the following system operates
 LDW/LDP system
 BSW system
On
When the buzzer of the following system does not oper-
ate
 LDW/LDP system
 BSW system Off
LDP SYSTEM ON Start the engine and press dy-
namic driver assistance switch
(When LDP system setting is
ON) When the LDP system is ON On
When the LDP system is OFF Off
READY signal Start the engine and press dy-
namic driver assistance switch
(When LDP system setting is
ON) When the LDP system is ON On
When the LDP system is OFF Off
Camera lost Drive the vehicle and activate
the LDW system, LDP system Both side lane markers are detected Detect
Deviate side lane marker is lost Deviate
Both side lane markers are lost Both
Shift position  Engine running
 While driving Displays the
shift position
Turn signal Turn signal lamps OFF
Off
Turn signal lamp LH blinking LH
Turn signal lamp RH blinking RH
Turn signal lamp LH and RH blinking LH&RH
SIDE G While driving Vehicle turning right Negative value
Vehicle turning left Positive value
WARN REQ Drive the vehicle and activate
the LDP system Lane departure warning is operating On
Lane departure warning is not operating Off
STATUS signal Drive the vehicle and activate
the LDP system When the LDP system is ON Stnby
When the LDP system is operating Warn
When the LDP system is canceled Cancl
When the LDP system is OFF Off
Lane unclear While driving Lane marker is unclear On
Lane marker is clear Off
FUNC ITEM Ignition switch ON FUNC1
FUNC ITEM (NV-ICC) Ignition switch ON Off
FUNC ITEM (NV-
DCA) Ignition switch ON
Off
DCA SELECT Ignition switch ON “Distance Control Assist” set with the navigation system
is ON
On
“Distance Control Assist” set with the navigation system
is OFF Off
Monitor item Condition Value/Status
Revision: 2010 May2011 QX56

DAS
ADAS CONTROL UNITDAS-307
< ECU DIAGNOSIS INFORMATION > [LDW & LDP]
C
D
E
F
G H
I
J
K L
M B
N P A
TERMINAL LAYOUT
PHYSICAL VALUES
LDP SELECT Ignition switch ON “Lane Departure Prevention” set with the navigation
system is ON
On
“Lane Departure Prevention” set with the navigation
system is OFF Off
BSI SELECT NOTE:
The item is indicated, but not monitored Off
NAVI ICC SELECT NOTE:
The item is indicated, but not monitored Off
NAVI DCA SELECT NOTE:
The item is indicated, but not monitored
Off
SYS SELECTABILITY Ignition switch ON Items set with the navigation system can be switched
normally
On
Items set with the navigation system cannot be
switched normally Off
WARN SYS SW Ignition switch ON When warning systems switch is pressed On
When warning systems switch is not pressed Off
BSW/BSI WARN LMP Ignition switch ON BSW warning lamp ON On
BSW warning lamp OFF Off
BSW SYSTEM ON Ignition switch ON When the BSW system is ON
(Warning systems ON indicator ON)
On
When the BSW system is OFF
(Warning systems ON indicator OFF) Off
4WD SW Engine running 4WD shift switch position is in AUTO AUTO
4WD shift switch position is in 4H 4H
4WD shift switch position is in 4L 4L
Monitor item Condition Value/Status
JSOIA0213ZZ
Revision: 2010 May2011 QX56

DAS-308
< ECU DIAGNOSIS INFORMATION >[LDW & LDP]
ADAS CONTROL UNIT
Fail-safe
INFOID:0000000006223719
If a malfunction occurs in each system, ADAS contro l unit cancels each control, sounds a beep, and turns ON
the warning lamp or indicator lamp.
Te r m i n a l N o .
(Wire color) Description
Condition Va l u e
(Approx.)
+ − Signal name Input/
Output
1
(V/W)
Ground Warning systems
switch
InputIgnition
switch ON When warning systems
switch is not pressed
12 V
When warning systems
switch is pressed 0 V
3
(R/Y) IBA OFF switch Input Ignition
switch
ON When IBA OFF switch is
not pressed
12 V
When IBA OFF switch is
pressed 0 V
4
(LG/B) Warning systems ON
indicator
OutputIgnition
switch ON Warning systems ON indi-
cator ON
0 V
Warning systems ON indi-
cator OFF 12 V
5
(R) ICC brake hold relay
drive signal
OutputIgnition
switch ON —12 V
At “STOP LAMP” test of
“Active test” 0 V
6
(B) Ground — Ignition
switch ON —0 V
7
(L) ITS communication-H — — — —
8
(Y) ITS communication-L — — — —
12
(G/R) Warning buzzer signal Output Ignition
switch ON Warning buzzer operation 0 V
Warning buzzer not oper-
ating
12 V
14
(L) CAN -H — — — —
15
(P) CAN -L — — — —
16
(W/G) Ignition power supply Input Ignition switch ON Battery Voltage
System Buzzer Warning lamp/Indicator lamp Description
Vehicle-to-vehicle distance control mode High-pitched
toneICC system warn
ing lamp Cancel
Conventional (fixed speed) cruise control mode High-pitched
tone
ICC system warn
ing lamp Cancel
Intelligent Brake Assist (IBA) High-pitched
toneIBA OFF indicator lamp Cancel
Forward Collision Warning (FCW) High-pitched
toneIBA OFF indicator lamp Cancel
Distance Control Assist (DCA) High-pitched
tone
ICC system warn
ing lamp Cancel
Lane Departure Warning (LDW) — Lane departure warning lamp Cancel
Revision: 2010 May2011 QX56

DAS
ADAS CONTROL UNITDAS-311
< ECU DIAGNOSIS INFORMATION > [LDW & LDP]
C
D
E
F
G H
I
J
K L
M B
N P A
- CRNT: A malfunction is detected now
- PAST: A malfunction was detected in the past
 IGN counter is displayed on FFD (Freeze Frame Data).
- 0: The malfunctions that are detected now CAN communication system (U1000, U1010)
- 1 - 39: It increases like 0 → 1 → 2 ··· 38 → 39 after returning to the normal condition whenever the ignition
switch OFF → ON. It returns to 0 when a malfunc tion is detected again in the process.
- If it is over 39, it is fixed to 39 unt il the self-diagnosis results are erased.
Other than CAN communication s ystem (Other than U1000, U1010)
- 1 - 49: It increases like 0 → 1 → 2 ··· 38 → 49 after returning to the normal condition whenever the ignition
switch OFF → ON. It returns to 0 when a malfunc tion is detected again in the process.
- If it is over 49, it is fixed to 49 unt il the self-diagnosis results are erased.
Systems for fail-safe
 A: Vehicle-to-vehicle distance control mode
 B: Conventional (fixed speed) cruise control mode
 C: Intelligent Brake Assist (IBA)
 D: Forward Collision Warning (FCW)
 E: Distance Control Assist (DCA)
 F: Lane Departure Warning (LDW)/Lane Departure Prevention (LDP)
 G: Blind Spot Warning (BSW)
DTC
CONSULT-III display Warning lamp Fail-safe
Reference
CONSULT-III On board
display
ICC system warning lamp
IBA OFF indicator lamp
Lane departure warning lamp BSW warning lamp
System
C1A00 0 CONTROL UNIT ON ON ON ON A, B, C, D, E, F, G DAS-345
C1A01 1 POWER SUPPLY CIR ON ON ON ON A, B, C, D, E, F, GDAS-346
C1A02 2 POWER SUPPLY CIR 2 ON ON ON ON A, B, C, D, E, F, GDAS-346
C1A03 3 VHCL SPEED SE CIRC ON ON ON ON A, B, C, D, E, F, GDAS-347
C1A04 4 ABS/TCS/VDC CIRC ON ON ON A, B, C, D, E, FDAS-348
C1A05 5 BRAKE SW/STOP L SW ON ON ON A, B, C, D, E, FDAS-349
C1A06 6 OPERATION SW CIRC ON ON A, B, E, FDAS-353
C1A12 12LASER BEAM OFFCN-
TR ON ON A, C, D, E
CCS-96
C1A13 13 STOP LAMP RLY FIX ON ON A, B, C, D, E CCS-97
C1A14 14 ECM CIRCUIT ON ON A, B, E, FDAS-355
C1A15 15 GEAR POSITION ON ON ON ON A, B, C, D, E, F, GDAS-356
C1A16 16 RADAR STAIN ON ON A, C, D, ECCS-106
C1A17 17 ICC SENSOR MALF ON ON A, B, C, D, ECCS-108
C1A18 18 LASER AIMING INCMP ON ON A, C, D, ECCS-109
C1A21 21ICC SENSOR HIGH
TEMP ON ON A, B, C, D, E
CCS-111
C1A24 24 NP RANGE ON ON ON ON A, B, C, D, E, F, G DAS-358
C1A26 26 ECD MODE MALF ON ON A, B, C, D, E CCS-115
C1A27 27 ECD PWR SUPLY CIR ON ON A, B, C, D, ECCS-116
C1A33 33CAN TRANSMISSION
ERR ON A, B, E
CCS-118
Revision: 2010 May2011 QX56

DAS
LANE CAMERA UNITDAS-315
< ECU DIAGNOSIS INFORMATION > [LDW & LDP]
C
D
E
F
G H
I
J
K L
M B
N P A
TERMINAL LAYOUT
PHYSICAL VALUES
Fail-safeINFOID:0000000006223723
FAIL-SAFE CONTROL BY DTC
Lane Departure Warning (LDW)
If a malfunction occurs in the lane camera unit, AD AS control unit cancels control, and turns ON the lane
departure warning lamp in the combination meter.
Lane Departure Prevention (LDP)
If a malfunction occurs in the lane camera unit, ADAS control unit cancels control, sounds a beep, and turns
ON the lane departure warning lamp in the combination meter.
TEMPORARY DISABLED STATUS AT HIGH TEMPERATURE
Lane Departure Warning (LDW)
 If the vehicle is parked in direct sunlight under high temperature conditions, the system may be deactivated
automatically. And the lane departure warning lamp (yellow) in the combination meter will blinks.
 When interior temperature is reduced, the system wil l resume operation automatically and the lane depar-
ture warning lamp (yellow) in the combination meter will stop blinking.
Lane Departure Prevention (LDP)
FCTRY AIM ROL Camera aiming is not completed 0.0 deg
Camera aiming is completed 0
± 5.0 deg
FCTRY AIM PIT Camera aiming is not completed 0.0 deg
Camera aiming is completed 0
± 5.0 deg
ADAS MALF ADAS control unit malfunction On
ADAS control unit normal Off
Monitor Item Condition Value/Status
JSOIA0232ZZ
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
Output
1
(B)
Ground Ground — — 0 V
4
(L) ITS communication-H — — —
5
(B) Ground — — 0 V
7
(W/G) Ignition power supply Input Ignition switch Battery voltage
8
(Y) ITS communication-L — — —
Revision: 2010 May2011 QX56

DAS
ACTION TESTDAS-337
< BASIC INSPECTION > [LDW & LDP]
C
D
E
F
G H
I
J
K L
M B
N P A
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
C1A05 BRAKE SW/STOP LAMP SWDAS-349
< DTC/CIRCUIT DIAGNOSIS > [LDW & LDP]
C
D
E
F
G H
I
J
K L
M B
N P A
C1A05 BRAKE SW/STOP LAMP SW
DTC LogicINFOID:0000000006228188
DTC DETECTION LOGIC
NOTE:
If DTC “C1A05” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to DAS-374,
"ADAS CONTROL UNIT : DTC Logic".
Diagnosis ProcedureINFOID:0000000006228189
1.CHECK SELF-DIAGNOSIS RESULTS
1. Perform “All DTC Readi ng” with CONSULT-III.
2. Check if the “U1000” is detect ed other than “C1A05” 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 STOP LAMP SWIT CH AND ICC BRAKE SWITCH
Check that “STOP LAMP SW” and “BRAKE SW” operate normally in “DATA MONITOR” of “ICC/ADAS”.
Is the inspection result normal?
YES >> GO TO 3.
NO-1 >> When “BRAKE SW” operation is malfunctioning: GO TO 4.
NO-2 >> When “STOP LAMP SW” operation is malfunctioning: GO TO 9.
3.CHECK STOP LAMP SWITCH
Check that “STOP LAMP SW” operate no rmally in “DATA MONITOR” of “ABS”.
Is the inspection result normal?
YES >> GO TO 14.
NO >> GO TO 9.
4.CHECK ICC BRAKE SWITCH INSTALLATION
1. Turn ignition switch OFF.
2. Check ICC brake switch for correct installation. Refer to BR-7, "
Inspection and Adjustment".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Adjust ICC brake switch installation. Refer to BR-7, "
Inspection and Adjustment".
5.ICC BRAKE SWITCH INSPECTION
1. Disconnect ICC brake switch connector.
2. Check ICC brake switch. Refer to DAS-352, "
Component Inspection (ICC Brake Switch)".
Is the inspection result normal?
DTC
(On board dis-
play) Trouble diagnosis
name DTC detecting condition Possible causes
C1A05 (5) BRAKE SW/STOP L
SW A mismatch between a stop lamp switch signal
and a ICC brake switch signal received from
ECM and a stop lamp signal received from the
ABS actuator and electric
unit (control unit) con-
tinues for 10 seconds or more with vehicle
speeds at approximately 40 km/h or more  Stop lamp switch circuit
 ICC brake switch circuit
 Stop lamp switch
 ICC brake switch
 Incorrect stop lamp switch installa-
tion
 Incorrect ICC brake switch installa- tion
ECM
 ABS actuator and electric unit (con-
trol unit)
Revision: 2010 May2011 QX56

DAS-350
< DTC/CIRCUIT DIAGNOSIS >[LDW & LDP]
C1A05 BRAKE SW/STOP LAMP SW
YES >> GO TO 6.
NO >> Replace ICC brake switch.
6.CHECK ICC BRAKE SWITCH POWER SUPPLY CIRCUIT
1. Turn the ignition switch ON.
2. Check voltage between ICC brake switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair the harnesses or connectors.
7.CHECK HARNESS BETWEEN ICC BRAKE SWITCH AND ECM
1. Turn ignition switch OFF
2. Disconnect ECM connector.
3. Check for continuity between ICC brake s witch harness connector and ECM harness connector.
4. Check for continuity between ICC br ake switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 8.
NO >> Repair the harnesses or connectors.
8.PERFORM SELF-DIAGNOSIS OF ECM
1. Connect all connectors again if the connectors are disconnected.
2. Turn ignition switch ON.
3. Perform “All DTC Reading”.
4. Check if any DTC is detected in “Self Diagnostic Result” of “ENGINE”. Refer to EC-98, "
DTC Index".
Is any DTC detected?
YES >> Repair or replace the malfunctioning part s identified by the self-diagnosis result.
NO >> Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
9.CHECK STOP LAMP SWITCH INSTALLATION
1. Turn ignition switch OFF.
2. Check stop lamp switch for correct installation. Refer to BR-7, "
Inspection and Adjustment".
Is the inspection result normal?
YES >> GO TO 10.
NO >> Adjust stop lamp switch installation. Refer to BR-7, "
Inspection and Adjustment".
10.STOP LAMP SWITCH INSPECTION
1. Disconnect stop lamp switch connector.
2. Check stop lamp switch. Refer to DAS-352, "
Component Inspection (Stop Lamp Switch)".
Is the inspection result normal?
YES >> GO TO 11.
Te r m i n a l s
Voltag e
(Approx.)
(+) (-)
ICC brake switch Ground
Connector Terminal
E68 1 Battery voltage
ICC brake switch ECM Continuity
Connector Terminal Connector Terminal
E68 2 E80 147 Existed
ICC brake switch GroundContinuity
Connector Terminal
E68 2 Not existed
Revision: 2010 May2011 QX56