2010 INFINITI QX56 diagram

HOOD SWITCHSEC-55
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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HOOD SWITCH
Diagnosis ProcedureINFOID:0000000005147124
Regarding Wiring Diagram information, refer to SEC-69, "Wiring Diagram - VEHICLE SECURITY SYSTEM".
1.CHECK HOOD SWITCH
Check hood switch and hood fitting condition.
Is the inspection result normal?
YES >> GO TO 2
NO >> Adjust installation of hood switch.
2.CHECK HOOD SWITCH INPUT SIGNAL
With CONSULT-III
Check "HOOD SW" in "BCM" DATA MONITOR mode with CONSULT-III. Refer to SEC-22, "
THEFT ALM :
CONSULT-III Function (BCM - THEFT ALM)".
Without CONSULT-III
Check voltage between IPDM E/ R harness connector E122 terminal
41 and ground.
Is the inspection result normal?
YES >> Hood switch is OK.
NO >> GO TO 3
3.CHECK HOOD SWITCH SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connecto r E122 and hood switch connector.
3. Check continuity between IPDM E/R connector (A) E122 termi- nal 41 and hood switch connector (B) E13 terminal 1.
4. Check continuity between IPDM E/R connector (A) E122 termi- nal 41 and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness. When hood is open : HOOD SW ON
When hood is closed : HOOD SW OFF
Connector
Te r m i n a l
Condition of
hood Voltage (V)
(Approx.)
(+) (-)
E122 41Ground Open
0
Closed Battery voltage
WIIA0601E
Te r m i n a l s Continuity
IPDM E/R
Connector Te r m i n a lHood switch
connector Te r m i n a l
E122 41E13 1Yes
IPDM E/R Connector Terminals Continuity
E122 41 Ground No
ALKIA1785ZZ
Revision: April 20092010 QX56

SEC-58
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
VEHICLE SECURITY INDICATOR
VEHICLE SECURITY INDICATOR
DescriptionINFOID:0000000005147126
• Vehicle security indicator is built in combination meter.
• NATS (Nissan Anti-Theft System) and vehicle security system conditions are indicated by blink or illumina-
tion of vehicle security indicator.
Component Function CheckINFOID:0000000005147127
1.CHECK FUNCTION
1. Perform “THEFT IND” in the “Active Test” mode with CONSULT-III.
2. Check vehicle security indicator operation.
Is the inspection result normal?
YES >> Inspection End.
NO >> Refer to SEC-58, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005147128
Regarding Wiring Diagram information, refer to SEC-69, "Wiring Diagram - VEHICLE SECURITY SYSTEM".
1.SECURITY INDICATOR LAMP ACTIVE TEST
With CONSULT-III
Check "THEFT IND” in "ACTIVE TEST" mode with CONSULT-III.
Without CONSULT-III
1. Disconnect BCM.
2. Check voltage between BCM harness connector M18 terminal 23 and ground.
Is the inspection result normal?
YES >> Security indicator lamp is OK.
NO >> GO TO 2
2.SECURITY INDICATOR LAMP CHECK
Check security indicator lamp condition by performing the self-diagnosis test. Refer to MWI-22, "
Diagnosis
Description".
Is the inspection result normal?
YES >> GO TO 3
NO >> Replace combination meter. Refer to MWI-100, "
Removal and Installation".
3.CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and combination meter connector.
Test item Description
THEFT IND ON
Vehicle security indicator ON
OFF OFF
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M18 23Ground ON
0
OFF Battery voltage
LIIA0523E
Revision: April 20092010 QX56

BCM (BODY CONTROL MODULE)SEC-69
< ECU DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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Wiring Diagram - VE HICLE SECURITY SYSTEMINFOID:0000000005147132
ABKWA0444GB
Revision: April 20092010 QX56

SEC-80
< ECU DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BCM (BODY CONTROL MODULE)
Wiring Diagram - IVIS
INFOID:0000000005147133
ABKWA0445GB
Revision: April 20092010 QX56

SEC-94
< ECU DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
INTELLIGENT KEY UNIT
Wiring Diagram - INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION -
INFOID:0000000005147139
ABKWA0448GB
Revision: April 20092010 QX56

SN
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DRIVER INFORMATION & MULTIMEDIA
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CONTENTS
SONAR SYSTEM
BASIC INSPECTION ....... .............................3
DIAGNOSIS AND REPAIR WORKFLOW ..... .....3
Work Flow ........................................................... ......3
INSPECTION AND ADJUSTMENT .....................5
Preliminary Check ............................................... ......5
FUNCTION DIAGNOSIS ...............................6
REAR SONAR SYSTEM ................................ .....6
System Diagram .................................................. ......6
System Description ...................................................6
Component Parts Location ........................................7
Component Description .............................................7
Self-Diagnosis Function ............................................7
FRONT AND REAR SONAR SYSTEM .......... ....10
System Diagram .................................................. ....10
System Description .................................................10
Component Parts Location ......................................11
Component Description ...........................................12
CONSULT-III Function (SONAR) ............................12
COMPONENT DIAGNOSIS .........................13
POWER SUPPLY AND GROUND CIRCUIT .. ....13
Diagnosis Procedure (With Rear Sonar System) ....13
Diagnosis Procedure (With Front and Rear Sonar
System) ............................................................... ....
13
SONAR SENSOR CIRCUIT INSPECTION ........15
Description .......................................................... ....15
Diagnosis Procedure (With Rear Sonar System) ....15
Diagnosis Procedure (With Front and Rear Sonar
System) ...................................................................
15
SONAR BUZZER CIRCUIT INSPECTION .........17
Description .......................................................... ....17
Diagnosis Procedure (With Rear Sonar System) ....17
Diagnosis Procedure (With Front and Rear Sonar
System) ...................................................................
17
Component Inspection ......................................... ....18
SONAR SYSTEM OFF SWITCH CIRCUIT IN-
SPECTION ........................................................
19
Description ........................................................... ....19
Diagnosis Procedure (With Rear Sonar System) ....19
Diagnosis Procedure (With Front and Rear Sonar
System) ............................................................... ....
19
Component Inspection .............................................20
ECU DIAGNOSIS .........................................21
SONAR CONTROL UNIT FOR REAR SONAR
SYSTEM ...................... ......................................
21
Reference Value .................................................. ....21
Wiring Diagram ........................................................23
DTC Index ...............................................................30
SONAR CONTROL UNIT FOR FRONT AND
REAR SONAR SYSTEM ...................................
31
Reference Value ......................................................31
Wiring Diagram ........................................................33
DTC Index ...............................................................44
SYMPTOM DIAGNOSIS ..............................45
SONAR SYSTEM SYMPTOMS ........................45
Symptom Table ................................................... ....45
PRECAUTION ..............................................46
PRECAUTION ...................................................46
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ....
46
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ...................................
46
PREPARATION ...........................................48
PREPARATION .................................................48
Commercial Service Tool .................................... ....48
Revision: April 20092010 QX56

SN-6
< FUNCTION DIAGNOSIS >
REAR SONAR SYSTEM
FUNCTION DIAGNOSIS
REAR SONAR SYSTEM
System DiagramINFOID:0000000005146184
System DescriptionINFOID:0000000005146185
FUNCTION
With power and ground supplied, transmission gear selector lever in R position, and the sonar system OFF
switch ON, the rear sonar system will detect obstacles withi n 1.8 m (5.9 ft.) of the rear sonar sensors. The
vehicle operator is notified of obstacles by varied rate of tone from the sonar buzzer depending on distance of
obstacle being sensed.
SONAR SYSTEM OFF SWITCH
With power and ground supplied to the sonar control unit, transmission gear selector lever in R position, the
sonar system can be disabled and the sonar buzzer silenced by momentarily pressing the sonar system OFF
switch. The sonar system OFF indicator lamp will be illuminated in the sonar system OFF switch.
The rear sonar system and buzzer will be disabled and t he sonar system OFF indicator will be illuminated until
the ignition switch is turned OFF. When the ignition switch is turned ON, the rear sonar system will be
enabled. Depressing the sonar system OFF switch again will enable the rear sonar system also. Enabling the
rear sonar system will cause the rear sonar system OFF i ndicator to go out. If the indicator light is blinking
there is a malfunction in the system.
SONAR BUZZER
With power and ground supplied to the sonar control unit and the A/T selector lever in R position, a stationary
object that is at least 7.0 cm (2.8 in.) wide and 1.0 m (39. 0 in.) tall and that is closer than 1.8 m (5.9 ft.) will be
detected by the rear sonar sensors, causing the sonar buzzer to sound a tone. As the vehicle moves closer to
the object, the rate of the tone will increase. When the object is less than 25.0 cm (10 in.) from the rear
bumper, the tone will sound continuously.
REAR SONAR SENSORS
With power and ground supplied to the rear sonar sens ors, the sonar sensors transmit an ultrasonic signal.
This signal is reflected back to the sensor by objects large enough and close enough to be detected. The rear
sonar sensors measure the time from the transmitted si gnal to the time the signal is reflected back and sends
this information to the sonar control unit.
BACK-UP LAMP RELAY
The back-up lamp relay provides a reverse signal to the sonar control unit.
AWNIA1905GB
Revision: April 20092010 QX56

SN-10
< FUNCTION DIAGNOSIS >
FRONT AND REAR SONAR SYSTEM
FRONT AND REAR SONAR SYSTEM
System DiagramINFOID:0000000005146189
System DescriptionINFOID:0000000005146190
FUNCTION
With power and ground supplied, transmission gear selector lever in R position, and the sonar system OFF
switch ON, the sonar system will detect obstacles within 1.8 m (5.9 ft.) of the rear sonar sensors and the two
outer front sonar sensors. The vehicle operator is notif ied of obstacles by varied rate of tone from the rear
sonar buzzer depending on distance of obstacle being sens ed. If the vehicle speed reaches 50 km/h (31
MPH) the sonar syst em will shut down.
With power and ground supplied, transmission gear selector lever in a forward drive gear, and the sonar sys-
tem OFF switch ON, the front sonar system will detect obstacles within 1.0 m (3 ft.) of the front sonar sensors.
The vehicle operator is notified of obstacles by varied rate of tone from the front sonar buzzer depending on
distance of obstacle being sensed. When the vehicle accelerates to 12 km/h (7.5 MPH) the sonar system will
shut down. When the vehicle decelerates to 8 km/h (5 MPH) the sonar system will turn back on.
SONAR SYSTEM OFF SWITCH
With power and ground supplied to the sonar control unit, transmission gear selector lever in a position other
than P, the sonar system can be di sabled and the sonar buzzers silenced by momentarily pressing the sonar
system OFF switch. The sonar system OFF indicator lamp will be illuminated in the sonar system OFF switch.
The sonar system and buzzers will be di sabled and the sonar system OFF indicator will be illuminated until the
ignition switch is turned OFF. When the ignition switch is turned ON, the sonar system will be enabled.
Depressing the sonar system OFF switch again will enabl e the sonar system also. Enabling the sonar system
will cause the sonar system OFF indicator to go out. The indicator will flash if a malfunction exists in the sys-
tem.
SONAR BUZZERS
With power and ground supplied to the sonar control unit and the A/T selector lever in R position, a stationary
object that is at least 9.0 cm (3.5 in.) wide and that is closer than 1.8 m (5.9 ft.) will be detected by the rear
sonar sensors and the two outer front sonar sensors, causing the rear sonar buzzer to sound a tone. As the
vehicle moves closer to the object, the rate of the tone will increase. When the object is less than 25.0 cm (10
in.) from the rear bumper, the tone will sound continuously.
With power and ground supplied to the sonar control unit and the A/T selector lever in a forward drive gear, a
stationary object that is at least 9.0 cm (3.5 in.) wide and that is closer than 1.0 m (3 ft.) will be detected by the
front sonar sensors, causing the front sonar buzzer to sound a tone. As the vehicle moves closer to the object,
the rate of the tone will increase. When the object is less than 30 cm (12 in.) from the front bumper, the tone
will sound continuously.
REAR SONAR SENSORS
With power and ground supplied to the rear sonar sens ors, the sonar sensors transmit an ultrasonic signal.
This signal is reflected back to the sensor by objects large enough and close enough to be detected. The rear
AWNIA0128GB
Revision: April 20092010 QX56