air INFINITI QX56 2010 Factory Service Manual

PRECAUTIONSSEC-119
< PRECAUTION > [WITH INTELLIGENT KEY SYSTEM]
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5. When the repair work is completed, return the ignition switch to the ″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of al l control units using CONSULT-III.
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SEC-120
< ON-VEHICLE REPAIR >[WITH INTELLIGENT KEY SYSTEM]
INTELLIGENT KEY UNIT
ON-VEHICLE REPAIR
INTELLIGENT KEY UNIT
Removal and InstallationINFOID:0000000005147154
REMOTE KEYLESS ENTRY RECEIVER
Removal
1. Remove the instrument panel. Refer to
IP-12, "Removal and Installation".
2. Disconnect the wire harness (1), remove the bolt (A) and the
RKE receiver (2).
Installation
Installation is in the reverse order of removal.
INTELLIGENT KEY UNIT
Removal
1. Remove the instrument panel. Refer to IP-12, "Removal and Installation".
2. Disconnect the wire harness (1), remove the bolt (A) and the
Intelligent key unit (2).
Installation
Installation is in the reverse order of removal.
NATS ANTENNA AMP
NOTE:
• If NATS antenna amp. is not installed correctly, NV IS (NATS) system will not operate properly and "SELF-
DIAG RESULTS" on CONSULT-III screen will show "LOCK MODE" or "CHAIN OF IMMU-KEY".
• Initialization is not necessary when only t he NATS antenna amp. is replaced with a new one.
Removal
1. Disconnect the battery negative terminal.
2. Remove the steering column covers. Refer to IP-11, "
Exploded View".
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INTELLIGENT KEY UNITSEC-121
< ON-VEHICLE REPAIR > [WITH INTELLIGENT KEY SYSTEM]
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3. Remove the bolt, disconnect the electrical connector, and remove the NATS antenna amp (1).
Installation
Installation is in the reverse order of removal.
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SN
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DRIVER INFORMATION & MULTIMEDIA
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SECTION SN
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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
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SN
DIAGNOSIS AND REPAIR WORKFLOWSN-3
< BASIC INSPECTION >
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BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work FlowINFOID:0000000005146182
WORK FLOW
DETAILED FLOW
1.CUSTOMER INFORMATION
Interview the customer to obtain detailed information about the symptom.
>> GO TO 2
2.PRELIMINARY CHECK
Perform preliminary check. Refer to SN-5, "
Preliminary Check".
>> GO TO 3
3.SELF-DIAGNOSIS
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SN-4
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
Perform self-diagnosis. Refer to SN-7, "Self-Diagnosis Function" (with rear sonar system) or SN-12, "CON-
SULT-III Function (SONAR)" (with front and rear sonar system).
>> GO TO 4
4.SYMPTOM
Check for symptoms. Refer to SN-45, "
Symptom Table".
>> GO TO 5
5.MALFUNCTIONING PARTS
Repair or replace the applicable parts.
>> GO TO 6
6.SYSTEM OPERATION
Check system operation. Refer to SN-5, "
Preliminary Check".
>> GO TO 7
7.SELF-DIAGNOSIS
Perform self-diagnosis. Refer to SN-7, "
Self-Diagnosis Function" (with rear sonar system) or SN-12, "CON-
SULT-III Function (SONAR)" (with front and rear sonar system).
Are any fault codes displayed?
YES >> GO TO 5
NO >> Inspection End.
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SN
INSPECTION AND ADJUSTMENTSN-5
< BASIC INSPECTION >
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INSPECTION AND ADJUSTMENT
Preliminary CheckINFOID:0000000005146183
DESCRIPTION
The purpose of the sonar sensor preliminary check is to confirm that there are no outside factors affecting the
sonar system.
CONDITIONS
• Ignition switch ON
• No obstructions within 3.0 m (10 ft.) of sonar sensors
SONAR SENSOR STATUS CHECK
• Check that the sonar sensors are properly aligned (no deformation in sensor mounting areas).
• Check that snow, mud or other foreign obj ects are not adhering to the sonar sensors.
• Check that there is no deformation, scratc hes or other damage to the sonar sensors.
• Check that water has not accu mulated in the sonar sensors.
CAUTION:
Use water, cotton swab, or other soft material for cleaning the sensors.
1. Check that there are no obstacles wit hin each sonar sensor's detection range.
2. Check that there are no nearby ultrasound sources such as the sounds of vehicle horns, motorcycle
engines or truck air brakes.
3. Check that the vehicle is on a level surface.
Sonar sensors Detection range
Front Approx. 1.0 m (3 ft.) maximum
Rear Approx. 1.8 m (5.9 ft.) maximum
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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 sonar sensors, the sonar sensors transmit an ultrasonic signal. This
signal is reflected back to the sensor by objec ts large enough and close enough to be detected. The sonar
sensors measure the time from the transmitted signal to the time the signal is reflected back and send this
information to the sonar control unit.
Diagnosis Procedure (With Rear Sonar System)INFOID:0000000005146197
Regarding Wiring Diagram information, refer to SN-23, "Wiring Diagram".
1.CHECK REAR SONAR SENSOR CIRCUITS
1. Turn ignition switch OFF.
2. Disconnect sonar control unit connector and rear sonar sensor connectors.
3. Check continuity between sonar control unit harness connector (A) and rear sonar sensor harness connectors (B).
4. Check continuity between sonar control unit harness connector and ground.
Are the inspection results normal?
YES >> Inspection End.
NO >> Repair harness or connector.
Diagnosis Procedure (With Front and Rear Sonar System)INFOID:0000000005146198
Regarding Wiring Diagram information, refer to SN-33, "Wiring Diagram".
1.CHECK SONAR SENSOR CIRCUITS
1. Turn ignition switch OFF.
2. Disconnect sonar control unit connec tors and sonar sensor connectors.
Connector TerminalConnectorTerminal Continuity
B24 (A) 16
C102, C103, C104, C105 (B) 1
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9, 10, 11, 12 2
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ConnectorTerminalContinuity
B24 9, 10, 11, 12, 15, 16 Ground No
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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 between sonar control unit harness connectors
(A, B) and ground.
Are the inspection results normal?
YES >> Inspection End.
NO >> Repair harness or connector.
Connector Terminal ConnectorTerminal Continuity
B56 (A) 9
C102, C103, C104, C105 (C) 1
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13, 14, 15, 16 2
B57 (B) 17
E158, E162, E163, E166 (C) 1
26 3
19, 20, 24, 25 2
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ConnectorTerminalContinuity
B56 (A) 9, 12, 13, 14, 15, 16 GroundNo
B57 (B) 17, 19, 20, 24, 25, 26
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SN
SONAR BUZZER CIRCUIT INSPECTIONSN-17
< COMPONENT DIAGNOSIS >
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SONAR BUZZER CIRCUIT INSPECTION
DescriptionINFOID:0000000005146199
When the A/T selector lever is not it park or neutral, a stationary object will be detected by the sonar sensors
causing the front or 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 very cl ose to the vehicle, the tone will sound continuously.
Diagnosis Procedure (With Rear Sonar System)INFOID:0000000005146200
Regarding Wiring Diagram information, refer to SN-23, "Wiring Diagram".
1.CHECK SONAR BUZZER
Refer to SN-18, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace sonar buzzer. Refer to SN-51, "
Removal and Installation".
2.CHECK SONAR BUZZER CIRCUITS
1. Turn ignition switch OFF.
2. Disconnect sonar control unit connector and sonar buzzer connector.
3. Check continuity between sonar control unit harness connector (A) and sonar buzzer harness connector (B).
4. Check continuity between sonar control unit harness connector and ground.
Are the inspection results normal?
YES >> Inspection End.
NO >> Repair harness or connector.
Diagnosis Procedure (With Front and Rear Sonar System)INFOID:0000000005146201
Regarding Wiring Diagram information, refer to SN-33, "Wiring Diagram".
1.CHECK BUZZERS
Refer to SN-18, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 2.
Connector Terminal Connector Terminal Continuity
B24 (A) 3
M47 (B) 2
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Connector TerminalContinuity
B24 3, 7Ground No
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Revision: April 20092010 QX56