2010 INFINITI QX56 Factory Service Manual

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INFINITI QX56 2010 Factory Service Manual SN
REAR SONAR SYSTEMSN-9
< FUNCTION DIAGNOSIS >
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1. Push and hold sonar system OFF switch for three seconds to reset time-out counter.
2. Push and hold sonar system OFF swi

Page 3482 of 4210

INFINITI QX56 2010 Factory Service Manual 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 supp

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

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INFINITI QX56 2010 Factory Service Manual SN
FRONT AND REAR SONAR SYSTEMSN-11
< FUNCTION DIAGNOSIS >
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sonar sensors measure the time from the transmitted si gnal to the time the signal is reflected back and send
th

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INFINITI QX56 2010 Factory Service Manual SN-12
< FUNCTION DIAGNOSIS >
FRONT AND REAR SONAR SYSTEM
Component Description
INFOID:0000000005146192
CONSULT-III Function (SONAR)INFOID:0000000005146193
SELF DIAGNOSTIC PROCEDURE
CONSULT-III can be

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INFINITI QX56 2010 Factory Service Manual SN
POWER SUPPLY AND GROUND CIRCUITSN-13
< COMPONENT DIAGNOSIS >
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COMPONENT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure (With Rear Sonar System)INFOID:0000

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INFINITI QX56 2010 Factory Service Manual SN-14
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
INSPECTION FOR POWER SUPPLY AND GROUND CIRCUIT
1.CHECK FUSES
Check for blown sonar system fuses.
Are any fuses blown?
YES >> If fuse is bl

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INFINITI QX56 2010 Factory Service Manual SN
SONAR SENSOR CIRCUIT INSPECTIONSN-15
< COMPONENT DIAGNOSIS >
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SONAR SENSOR CIRCUIT INSPECTION
DescriptionINFOID:0000000005146196
With power and ground supplied to the so

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INFINITI QX56 2010 Factory Service Manual SN-16
< COMPONENT DIAGNOSIS >
SONAR SENSOR CIRCUIT INSPECTION
3. Check continuity between sonar control unit harness connectors
(A, B) and sonar sensor harness connectors (C).
4. Check continuity betw

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