2011 INFINITI QX56 steering

AV
DIAGNOSIS SYSTEM (AROUND VIEW MONITOR CONTROL UNIT)
AV-45
< SYSTEM DESCRIPTION >
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Calibrating Camera Image
 Perform the calibration of camera image caused by the incorrect mounting position of each camera, etc. Always perform calibration
after performing the following work.
- When each camera or each camera mount (door mirror, front grille,
etc.) is removed
- When replacing around view monitor control unit
 When performing the calibration initialization, it can be set to the
NISSAN factory shipment condition.
Refer to AV-112, "
Work Procedure" for the calibration procedure.
Calibrating Camera Image item
CAUTION:
Type of Steer. Angle Sensor Abslt. The input type of steering angle sensor is displayed. (“Abslt.” is displayed on this
model.)
Type of Steer. Gear ratio 1 The type of steering gear ratio is displayed. (“1” is displayed on this model.)
Left or Right Steer. Right/Left The steering position is displayed.
Rear Camera Image Output signal OK/NG The input status of rear camera image signal is displayed by OK/NG in real time.
Rear Camera COMM Status OK/NG The communication status with rear camera is displayed by OK/NG in real time.
Rear Camera COMM Line OK/NG The status of communication line with rear camera is displayed by OK/NG in real
time.
Front Camera Image Output signal OK/NG The input status of front camera image signal is displayed by OK/NG in real time.
Front Camera COMM Status OK/NG The communication status with front camera is displayed by OK/NG in real time.
Front Camera COMM Line OK/NG The status of communication line with front camera is displayed by OK/NG in real
time.
Pass-Side Camera Image Output sig-
nal OK/NGThe input status of side camera RH image signal is displayed by OK/NG in real
time.
Pass-Side Camera COMM Status OK/NG The communication status with side camera RH is displayed by OK/NG in real
time.
Pass-Side Camera COMM Line OK/NG The status of communication line with side camera RH is displayed by OK/NG in
real time.
Dr-Side Camera Image Output signal OK/NG The input status of side camera LH image signal is displayed by OK/NG in real
time.
Dr-Side Camera COMM Status OK/NG The communication status with side camera LH is displayed by OK/NG in real
time.
Dr-Side Camera COMM Line OK/NG The status of communication line with side camera LH is displayed by OK/NG in
real time.
Diagnosis item Display Description
JSNIA2379ZZ
Adjustment range
Rotating direction : 31 patterns (16 on the center)
Upper/lower direction : (
−99) – (+99)
Left/right direction : ( −99) – (+99)
Items Description
Rear Camera Performs the ca libration of rear camera.
Pass-Side Camera Performs the ca libration of side camera RH.
Front Camera Performs the ca libration of front camera.
Dr-Side Camera Performs the calib ration of side camera LH.
Initialize Camera Image Calibration
*The calibration can be initialized to the factory shipment setting.
Revision: 2010 May2011 QX56

AV-52
< ECU DIAGNOSIS INFORMATION >
AV CONTROL UNIT
Te r m i n a l
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal name Input/
Output
1
(W/B) Ground BOSE amp. ON signal Output Ignition
switch ACC —12.0 V
2
(L) 3
(P) Sound signal front LH Output Ignition
switch ON Sound output
4
(V) 5
(LG) Sound signal rear LH Output Ignition
switch
ON Sound output
6
(Y/G) 15
(B) Steering switch signal A Input Ignition
switch
ON Keep pressing SOURCE
switch.
0 V
Keep pressing MENU UP
switch. 1.0 V
Keep pressing MENU
DOWN switch. 2.0 V
Keep pressing switch 3.0 V
Keep pressing ENTER
switch. 4.0 V
Except for above. 5.0 V
7
(V) Ground ACC power supply Input Ignition
switch ACC — Battery voltage
11
(Y/L) 12
(Y/G) Sound signal front RH Output Ignition
switch
ON Sound output
13
(O) 14
(W) Sound signal rear RH Output Ignition
switch ON Sound output
SKIB3609E
SKIB3609E
SKIB3609E
SKIB3609E
Revision: 2010 May2011 QX56

AV
AV CONTROL UNITAV-53
< ECU DIAGNOSIS INFORMATION >
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(Y/L) 15
(B) Steering switch signal B Input Ignition
switch
ON Keep pressing VOL DOWN
switch.
0 V
Keep pressing VOL UP
switch. 1.0 V
Keep pressing switch. 2.0 V
Keep pressing switch. 3.0 V
Except for above. 5.0 V
19
(Y/R) Ground Battery power supply Input Ignition
switch
OFF — Battery voltage
20
(B) Ground Ground — Ignition
switch ON —0 V
26
(LG) Ground AUX image signal Input Ignition
switch ON At front AUX image is dis-
played.
29
(W/B) Ground Disk eject signal Input Ignition
switch
ON Pressing the eject switch. 0 V
Except for above. 5.0 V
30
(R/W) Ground Mode change signal Output Ignition
switch ON Driver's Audio Stage ON 0 V
Driver's Audio Stage OFF 8.5 V
33
(L) Ground
Composite image signal
ground —Ignition
switch ON —0 V
34
(P) Ground Composite image signal Output Ignition
switch ON When DVD, USB or front
AUX image is displayed on
headrest display unit LH or
RH.
46
(V) Ground AUX image signal ground — Ignition
switch ON —0 V
47 — Shield — — — —
49
(R/W) Ground Switch ground — Ignition
switch
ON —0 V
53 — Shield — — — —
65
(W) Ground Parking brake signal Input Ignition
switch ON Parking brake is applied. 0 V
Parking brake is released. 4.5 V
67
(W) Ground Composite image signal
ground —Ignition
switch ON —0 V
Te r m i n a l
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal name Input/
Output
SKIB2251J
SKIB2251J
Revision: 2010 May2011 QX56

AV-142
< DTC/CIRCUIT DIAGNOSIS >
U1232 STEERING ANGLE SENSOR
U1232 STEERING ANGLE SENSOR
DTC LogicINFOID:0000000006216291
Diagnosis ProcedureINFOID:0000000006216292
1.ADJUST THE PREDICTIVE COURSE LINE CENTER POSITION OF THE STEERING ANGLE SENSOR
When U1232 is detected, adjust the predictive course line center position of the steering angle sensor.
>> Adjusts the steering angle sensor neutral position on ABS actuator and electrical unit (control unit)
side. Refer to BRC-64, "
Work Procedure".
DTCDisplay contents of
CONSULT-III DTC detection condition Possible malfunction factor
U1232 ST ANGLE SEN CALIB
[1232] Predictive course line center position adjustment of the
steering angle sensor is incomplete. Adjust the predictive course line cen-
ter position of the steering angle sen-
sor.
Revision: 2010 May2011 QX56

AV
STEERING SWITCH SIGNAL A CIRCUITAV-193
< DTC/CIRCUIT DIAGNOSIS >
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STEERING SWITCH SI GNAL A CIRCUIT
DescriptionINFOID:0000000006216366
Transmits the steering switch signal to AV control unit.
Diagnosis ProcedureINFOID:0000000006216367
1.CHECK STEERING SWITCH SIGNAL A CIRCUIT
1. Disconnect AV control unit connector and spiral cable connector.
2. Check continuity between AV control unit harness connector and spiral cable harness connector.
3. Check continuity between AV control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK SPIRAL CABLE
Check spiral cable.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace spiral cable. Refer to SR-14, "
Exploded View".
3.CHECK AV CONTROL UNIT VOLTAGE
1. Connect AV control unit connector and spiral cable connector.
2. Turn ignition switch ON.
3. Check voltage between AV control unit harness connector.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Replace AV control unit. Refer to AV-212, "
Removal and Installation".
4.CHECK STEERING SWITCH
1. Turn ignition switch OFF.
2. Check steering switch. Refer to AV-193, "
Component Inspection".
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace steering wheel. Refer to ST-33, "
Exploded View".
Component InspectionINFOID:0000000006216368
Measure the resistance between the steering s witch connector terminals 14 to 17 and 15 to 17.
AV control unit Spiral cable
Continuity
Connector Terminal Connector Terminal
M208 6 M33 24 Existed
AV control unit GroundContinuity
Connector Terminal
M208 6 Not existed
(+) ( −)
Vo l ta g e
(Approx.)
AV control unit AV control unit
Connector Terminal Connector Terminal M208 6 M208 15 5.0 V
Revision: 2010 May2011 QX56

AV-194
< DTC/CIRCUIT DIAGNOSIS >
STEERING SWITCH SIGNAL A CIRCUIT
Standard
Between terminals 14 and 17
ENTER switch ON : 2003 – 2043 Ω
switch ON : 716 – 730
Ω
MENU DOWN switch ON : 318 – 324 Ω
MENU UP switch ON : 120 – 122 Ω
SOURCE switch ON : 0 Ω
Between terminals 15 and 17 switch ON : 716 – 730
Ω
switch ON : 318 – 324
Ω
VOL UP switch ON : 120 – 122 Ω
VOL DOWN switch ON : 0 Ω
JSNIA0112GB
Revision: 2010 May2011 QX56

AV
STEERING SWITCH SIGNAL B CIRCUITAV-195
< DTC/CIRCUIT DIAGNOSIS >
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STEERING SWITCH SI GNAL B CIRCUIT
DescriptionINFOID:0000000006216369
Transmits the steering switch signal to AV control unit.
Diagnosis ProcedureINFOID:0000000006216370
1.CHECK STEERING SWITCH SIGNAL B CIRCUIT
1. Disconnect AV control unit connector and spiral cable connector.
2. Check continuity between AV control unit harness connector and spiral cable harness connector.
3. Check continuity between AV control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK SPIRAL CABLE
Check spiral cable.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace spiral cable. Refer to SR-14, "
Exploded View".
3.CHECK AV CONTROL UNIT VOLTAGE
1. Connect AV control unit connector and spiral cable connector.
2. Turn ignition switch ON.
3. Check voltage between AV control unit harness connector.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Replace AV control unit. Refer to AV-212, "
Removal and Installation".
4.CHECK STEERING SWITCH
1. Turn ignition switch OFF.
2. Check steering switch. Refer to AV-195, "
Component Inspection".
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace steering wheel. Refer to ST-33, "
Exploded View".
Component InspectionINFOID:0000000006216371
Measure the resistance between the steering s witch connector terminals 14 to 17 and 15 to 17.
AV control unit Spiral cable
Continuity
Connector Terminal Connector Terminal
M208 16 M33 31 Existed
AV control unit GroundContinuity
Connector Terminal
M208 16 Not existed
(+) ( −)
Vo l ta g e
(Approx.)
AV control unit AV control unit
Connector Terminal Connector Terminal M208 16 M208 15 5.0 V
Revision: 2010 May2011 QX56

AV-196
< DTC/CIRCUIT DIAGNOSIS >
STEERING SWITCH SIGNAL B CIRCUIT
Standard
Between terminals 14 and 17
ENTER switch ON : 2003 – 2043 Ω
switch ON : 716 – 730
Ω
MENU DOWN switch ON : 318 – 324 Ω
MENU UP switch ON : 120 – 122 Ω
SOURCE switch ON : 0 Ω
Between terminals 15 and 17 switch ON : 716 – 730
Ω
switch ON : 318 – 324
Ω
VOL UP switch ON : 120 – 122 Ω
VOL DOWN switch ON : 0 Ω
JSNIA0112GB
Revision: 2010 May2011 QX56