Nissan Murano Z51 (2013 year). Manual — part 77
SRC-78
< BASIC INSPECTION >
[FOR MEXICO]
DIAGNOSIS AND REPAIR WORK FLOW
Repair or replace the malfunctioning part.
>> GO TO 10.
10.
FINAL CHECK
Check self diagnostic result and air bag warning lamp operation in the user mode.
Is the malfunction repaired?
YES
>> INSPECTION END
NO
>> GO TO 2.
Revision: 2012 September
2013 MURANO
SRS AIR BAG SYSTEM
SRC-79
< SYSTEM DESCRIPTION >
[FOR MEXICO]
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SYSTEM DESCRIPTION
SRS AIR BAG SYSTEM
System Diagram
INFOID:0000000008454764
System Description
INFOID:0000000008454765
Supplemental Restraint System (SRS) activates air bag module and seal belt pre-tensioner when it detects a
frontal collision or a side collision that is more than the specified limit. Together with other safety devices, it
reduces the impact that occupant receives when vehicle collision occurs.
Air bag diagnosis sensor unit supplies power supply to air bag module and pre-tensioner seat belt when decel-
eration that is more than the specified limit is detected by G sensor in air bag diagnosis sensor unit, crash
JMHIA0500GB
Revision: 2012 September
2013 MURANO
SRC-80
< SYSTEM DESCRIPTION >
[FOR MEXICO]
SRS AIR BAG SYSTEM
zone sensor, or satellite sensor. Air bag module is composed of electric igniter (squib), filter, pyrotechnic mate-
rial, and gas generating material. When air bag module receives a signal from air bag diagnosis sensor unit,
air bag module ignites pyrotechnic material using electric igniter (squib) so that gas generating material gener-
ates high temperature nitrogen gas. The gas through filter activates air bag and seat belt pre-tensioner.
AIR BAG DIAGNOSIS SENSOR UNIT FUNCTIONS
Air bag diagnosis sensor unit has the following functions.
• Detects a collision and supplies the energy for deploying air bag and seat belt pre-tensioner.
• Detects and records electrical malfunction in air bag system and seat belt pre-tensioner system, and blinking
air bag warning lamp.
• Detects and records the deployment of air bag and seat belt pre-tensioner, and turns ON air bag warning
lamp.
• Indicates malfunctioning portion with blinking times of air bag warning lamp in diagnosis mode.
• Indicates the malfunction record via CONSULT.
COLLISION MODE
• The operation of supplemental restraint system is different depending on the collision modes applications.
For example, the driver air bag module, front passenger air bag module and front seat belt pre-tensioner are
activated in a frontal collision but not in a side collision.
• SRS configurations that are activated for some collision modes are as per the following.
×
: Apply
—: Not apply
SRS configuration
Frontal collision
Rear collision
Left side colli-
sion
Right side colli-
sion
Roll over
Driver air bag module
×
—
—
—
—
Front passenger air bag module
×
—
—
—
—
Front LH seat belt pre-tensioner
×
—
—
—
×
Front RH seat belt pre-tensioner
×
—
—
—
×
Front LH side air bag module
—
—
×
—
—
Front RH side air bag module
—
—
—
×
—
LH side curtain air bag module
—
—
×
—
×
RH side curtain air bag module
—
—
—
×
×
Collision detection output func-
tion
×
×
×
×
×
Revision: 2012 September
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SRS AIR BAG SYSTEM
SRC-81
< SYSTEM DESCRIPTION >
[FOR MEXICO]
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Component Parts Location
INFOID:0000000008454766
Component Description
INFOID:0000000008454767
1.
Front passenger air bag module
2.
Driver air bag module
3.
Combination switch (Spiral cable)
4.
Front passenger air bag OFF indica-
tor
5.
Air bag diagnosis sensor unit
6.
Satellite sensor (LH/RH)
7.
Front seat belt pre-tensioner (LH/
RH)
8.
Seat belt buckle switch (Driver side/
Passenger side)
9.
Front side air bag module (LH/RH)
10. Side curtain air bag module
11.
Crash zone sensor
JMHIA2475ZZ
Component
Function
Air bag diagnosis sensor unit
Detects a collision and supplies power supply for deployment to air bag module and
pre-tensioner seat belt.
Air bag module
• Driver
• Passenger
• Side
• Curtain
Receives signal from air bag diagnosis sensor unit and deploys air bag.
Seat belt pre-tensioner
Receives signal from air bag diagnosis sensor unit and deploys seat belt pre-tension-
er.
Seat belt buckle switch
Controls deployment timing based on seat belt fastened or unfastened condition.
Crash zone sensor
Transmits signal to air bag diagnosis sensor unit when a frontal collision occurs.
Satellite sensor (LH/RH)
Transmits signal to air bag diagnosis sensor unit when a side collision occurs.
Revision: 2012 September
2013 MURANO
SRC-82
< SYSTEM DESCRIPTION >
[FOR MEXICO]
SRS AIR BAG SYSTEM
Combination meter (air bag warning lamp)
Indicates air bag malfunctioning and deployment by blinking and illuminating air bag
warning lamp.
Combination switch (spiral cable)
Supplies power supply to driver air bag module on steering wheel.
Component
Function
Revision: 2012 September
2013 MURANO
DIAGNOSIS SYSTEM (AIRBAG)
SRC-83
< SYSTEM DESCRIPTION >
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DIAGNOSIS SYSTEM (AIRBAG)
Description
INFOID:0000000008843624
CAUTION:
• Never use electrical test equipment on any circuit related to the SRS unless instructed in this Ser-
vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.
• Never repair, splice or modify the SRS wiring harness. If the harness is damaged, replace it with a
new one.
• Keep ground portion clean.
DIAGNOSIS FUNCTION
• The SRS self-diagnostic results can be read with air bag warning lamp and/or CONSULT.
• The user mode is exclusively prepared for the customer (driver). This mode warns the driver of a system
malfunction through the operation of the air bag warning lamp.
• The diagnosis mode allows the technician to locate and inspect the malfunctioning part.
• The mode applications for the air bag warning lamp and CONSULT are as per the following items.
×
: Application, —: Not application
On Board Diagnosis Function
INFOID:0000000008843625
ON-BOARD DIAGNOSIS
There are two self diagnosis functions with air bag warning lamp as per the following items.
• USER MODE
• DIAGNOSIS MODE
METHOD OF STARTING
• Diagnosis mode changes from user mode to diagnosis mode when changing operation is performed.
• In user mode, when SRS air bag warning lamp is not blinking, changing to diagnosis mode by ignition switch
operation is not possible.
• In diagnosis mode, when repair is complete and system is normal, the mode changes to user mode when
ignition switch is turned from OFF to ON.
Procedure to Change Diagnosis Mode
1.
Turn ignition switch from OFF to ON.
2.
SRS air bag lamp turns ON for 7 second and turns OFF, then turn ignition switch OFF within 2 second
after the lamp turns OFF.
3.
After turning ignition switch OFF, wait for 3 seconds or more.
4.
Repeat operation 1 to 3 for 2 times so that operation 1 to 3 is repeated for 3 times in total.
5.
Turn ignition switch from OFF to ON. Diagnosis mode changes.
USER MODE
In USER MODE, air bag warning lamp on combination meter blinks when a malfunction is detected and warns
the customer (driver).
How to Read Air Bag Warning Lamp
1.
Turn the ignition switch from OFF to ON, and check that the air bag warning lamp blinks.
2.
Compare the air bag warning lamp blinking pattern with the examples.
Air Bag Warning Lamp Examples
Diagnosis tool
User mode
Diagnosis mode
Air bag warning lamp
×
×
CONSULT
–
×
Revision: 2012 September
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SRC-84
< SYSTEM DESCRIPTION >
[FOR MEXICO]
DIAGNOSIS SYSTEM (AIRBAG)
Occurrence of Intermittent Malfunction
Air bag warning lamp blinks in user mode when an intermittent malfunction occurs. Air bag warning lamp turns
OFF when system returns to normal status.
Battery Low Voltage Detection
Air bag diagnosis sensor unit warns the driver by turning air bag warning lamp ON when air bag diagnosis
sensor unit detects battery low voltage. Air bag warning lamp turns ON when a voltage value at which air bag
diagnosis sensor unit cannot operate normally (9 V or less) is detected for 10 seconds or more. After starting
to turn ON, air bag warning lamp turns OFF when air bag diagnosis sensor unit detects the normal value of
battery voltage for 10 seconds or more.
Air bag warning lamp operation (user mode)
SRS condition
Reference item
• No malfunction is detected
• No further action is necessary
—
The system is malfunctioning
Refer to
or “DIAGNOSIS MODE”
• Air bag is deployed
• Seat belt pre-tensioner is deployed
Refer to
• Air bag diagnosis sensor unit is mal-
functioning
• Air bag power supply circuit is mal-
functioning
• Air bag warning lamp circuit is mal-
functioning
Refer to
Battery voltage is low (less than 9 V, or
16 V or more)
Refer to “BATTERY LOW VOLTAGE
DETECTION” or “BATTERY HIGH
VOLTAGE DETECTION”
• Air bag diagnosis sensor unit is mal-
functioning
• Air bag warning lamp circuit is mal-
functioning
Refer to
SHIA0011E
SHIA0012E
SHIA0013E
SHIA0014E
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DIAGNOSIS SYSTEM (AIRBAG)
SRC-85
< SYSTEM DESCRIPTION >
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The mode cannot be switched to diagnosis mode by ignition switch while air bag warning lamp turns ON due
to this cause.
Battery High Voltage Detection
Air bag diagnosis sensor unit warns the driver by turning air bag warning lamp ON when air bag diagnosis
sensor unit detects battery high voltage. Air bag warning lamp turns ON when a voltage value at which air bag
diagnosis sensor unit cannot operate normally (16 V or more) is detected for 3 seconds or more. After starting
to turn ON, air bag warning lamp turns OFF when air bag diagnosis sensor unit detects the normal value of
battery voltage for 3 seconds or more.
The mode cannot be switched to diagnosis mode by ignition switch while air bag warning lamp turns ON due
to this cause.
DIAGNOSIS MODE
The diagnosis mode can only be switched when a malfunction is detected in the user mode. Malfunctioning
system is indicated according to blinking pattern of air bag warning lamp.
How to Read Air Bag Warning Lamp
1.
Follow the procedures of “PROCEDURE TO CHANGE DIAGNOSIS MODE”, and switch to the diagnosis
mode.
2.
Turn ignition switch ON. Check the blinking pattern of air bag warning lamp.
There are 4 blinking patterns for the air bag warning lamp as per the following items.
• Front air bag system: Two 1.5 seconds blinks followed by a 0.5 seconds blink repeated.
• Side air bag system: Three 1.5 seconds blinks followed by a 0.5 seconds blink repeated.
• Air bag control unit system: 3 seconds blink followed by a 0.5 seconds blink repeated.
• Sensor system: Two 3 seconds blinks followed by a 0.5 seconds blink repeated.
Front air bag system
Side air bag system
Air bag control unit system
Sensor system
EXAMPLE OF AIR BAG WARNING LAMP OPERATION IN THE DIAGNOSIS MODE
System Normal
Number of 0.5 second blinks
Malfunctioning items
1
Driver air bag module
2
Passenger air bag module
3
Seat belt pre-tensioner LH
4
Seat belt pre-tensioner RH
Number of 0.5-second blinks
Malfunctioning items
1
Side air bag module LH
2
Side air bag module RH
3
Curtain air bag module LH
4
Curtain air bag module RH
Number of 0.5 second blinks
Malfunctioning items
1
Collision detection
2
Air bag diagnosis sensor unit
Number of 0.5 second blinks
Malfunctioning items
1
Crash zone sensor
2
Satellite sensor LH
3
Satellite sensor RH
12
Other satellite sensor
Revision: 2012 September
2013 MURANO
SRC-86
< SYSTEM DESCRIPTION >
[FOR MEXICO]
DIAGNOSIS SYSTEM (AIRBAG)
When system is normal.
Single System Malfunction
• Front air bag system
When driver air bag module (Item display) is malfunctioning.
• Side air bag system
When side air bag module LH (Item display) is malfunctioning.
• Air bag control unit system
When air bag diagnosis sensor unit (Item display) is malfunctioning.
• Sensor system
When crash zone sensor (Item display) is malfunctioning.
JMHIA2358GB
JMHIA2359GB
JMHIA2361GB
JMHIA2363GB
JMHIA2366GB
Revision: 2012 September
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DIAGNOSIS SYSTEM (AIRBAG)
SRC-87
< SYSTEM DESCRIPTION >
[FOR MEXICO]
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Multiple Systems Malfunction
• Front air bag system
When driver air bag module (Item display 1) and passenger air bag module (Item display 2) are malfunction-
ing.
• Side air bag system
When side air bag module LH (Item display 1) and side air bag module RH (Item display 2) are malfunction-
ing.
• Air bag control unit system
When air bag diagnosis sensor unit (Item display 1) and front passenger air bag indicator (Item display 2)
are malfunctioning.
• Sensor system
When crash zone sensor (Item display 1) and B-pillar satellite sensor LH (Item display 2) are malfunctioning.
• Sensor system and front air bag system
JMHIA2360GB
JMHIA2362GB
JMHIA2365GB
JMHIA2367GB
Revision: 2012 September
2013 MURANO
SRC-88
< SYSTEM DESCRIPTION >
[FOR MEXICO]
DIAGNOSIS SYSTEM (AIRBAG)
When crash zone sensor (Item display 1) and driver air bag module (Item display 2) are malfunctioning.
CONSULT Function
INFOID:0000000008843626
APPLICATION ITEM
CONSULT performs the following functions.
SELF-DIAG RESULT
.
JMHIA2368GB
Diagnosis mode
Description
Self Diagnostic Result
• Self-diagnosis result is displayed.
• “No DTC”is displayed when repair is completed by part replacement or other operations.
• “SELF-DIAG RESULT [MEMORY]” is displayed until “Erase”performed.
Data Monitor
This item is displayed, but cannot be supported.
ECU Identification
Air bag diagnosis sensor unit ECU discriminated number (identification number) or part number is
displayed. Air bag diagnosis sensor unit has individual ECU discriminated number (identification
number) or part number based on model and equipment.
TROUBLE DIAG RECORD
With TROUBLE DIAG RECORD, diagnosis results previously erased by a reset operation can be
displayed on CONSULT screen.
Revision: 2012 September
2013 MURANO
U1000 CAN COMM CIRCUIT
SRC-89
< DTC/CIRCUIT DIAGNOSIS >
[FOR MEXICO]
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DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000008843627
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control unit, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN H-line, CAN L-line) allowing a high rate of information transmission with less
wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to
LAN-28, "CAN System Specification Chart"
DTC Logic
INFOID:0000000008843628
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000008843629
1.
PERFORM SELF DIAGNOSTIC
1.
Turn ignition switch ON and wait for 2 seconds or more.
2.
Check “SELF-DIAG RESULT [CAN]”.
Is DTC “U1000” displayed?
YES
>> Refer to
LAN-18, "Trouble Diagnosis Flow Chart"
NO
>> Refer to
GI-45, "Intermittent Incident"
.
DTC
CONSULT screen
items
DTC Detection Condition
Possible cause
U1000
CAN COMM CIRCUIT
When air bag diagnosis sensor unit cannot
communicate CAN communication signal
continuously for 2 seconds or more.
CAN communication system
Revision: 2012 September
2013 MURANO
SRC-90
< DTC/CIRCUIT DIAGNOSIS >
[FOR MEXICO]
U1010 CONTROL UNIT (CAN)
U1010 CONTROL UNIT (CAN)
DTC Logic
INFOID:0000000008843630
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000008843631
1.
REPLACE AIR BAG DIAGNOSIS SENSOR UNIT
When DTC “U1010” is detected, replace air bag diagnosis sensor unit.
>> Replace air bag diagnosis sensor unit. Refer to
SR-53, "Removal and Installation"
.
DTC
CONSULT screen items
DTC Detection Condition
Possible cause
U1010
CONTROL UNIT (CAN)
Air bag diagnosis sensor unit detected internal CAN communica-
tion circuit malfunction.
Air bag diagnosis sensor unit
Revision: 2012 September
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B0001 DRIVER AIR BAG MODULE
SRC-91
< DTC/CIRCUIT DIAGNOSIS >
[FOR MEXICO]
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B0001 DRIVER AIR BAG MODULE
DTC Logic
INFOID:0000000008843632
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CHECK SELF-DIAG RESULT
With CONSULT
1.
Turn ignition switch ON.
2.
Perform “Self Diagnostic Result” mode of “AIR BAG” using CONSULT.
Without CONSULT
1.
Turn ignition switch ON.
2.
Check the air bag warning lamp status. Refer to
SRC-83, "On Board Diagnosis Function"
.
NOTE:
SRS does not enter the diagnosis mode if no malfunction is detected in the user mode.
Is malfunctioning part detected?
YES
>> Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000008843633
WARNING:
• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait at least 3
minutes or more. (To discharge backup capacitor.)
• Never use unspecified tester or other measuring device.
1.
CHECK HARNESS CONNECTOR
Check the harness connector.
Is the inspection result normal?
DTC
CONSULT screen items
(Trouble diagnosis content)
DTC detecting condition
Possible cause
B0001
DRIVER AIRBAG MODULE
[Driver Frontal Stage 1 De-
ployment Control (Subfault)]
[OPEN]
Driver air bag module cir-
cuit is open
(including the spiral cable)
• Connection malfunction or open
circuit of harness and connector
• Internal malfunction of driver air
bag module
• Internal malfunction of air bag
diagnosis sensor unit
[VB-SHORT]
Driver air bag module cir-
cuit is shorted to power
supply circuit
(including the spiral cable)
• Connection malfunction or short
circuit to power supply of har-
ness and connector
• Internal malfunction of driver air
bag module
• Internal malfunction of air bag
diagnosis sensor unit
[GND-SHORT]
Driver air bag module cir-
cuit is shorted to ground
(including the spiral cable)
• Connection malfunction or short
circuit to ground of harness and
connector
• Internal malfunction of driver air
bag module
• Internal malfunction of air bag
diagnosis sensor unit
[SHORT]
Driver air bag module cir-
cuits are shorted to each
other
(including the spiral cable)
• Connection malfunction or short
circuit of harness and connector
• Internal malfunction of driver air
bag module
• Internal malfunction of air bag
diagnosis sensor unit
Revision: 2012 September
2013 MURANO
SRC-92
< DTC/CIRCUIT DIAGNOSIS >
[FOR MEXICO]
B0001 DRIVER AIR BAG MODULE
YES
>> GO TO 2.
NO
>> Replace harness connector.
2.
CHECK WIRING HARNESS
Check the wiring harness externals.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace wiring harness.
3.
CHECK DTC
Perform each inspection according to the displayed DTC.
Which DTC is displayed?
[OPEN] >> GO TO 4.
[VB-SHORT] >> GO TO 8.
[GND-SHORT]>> GO TO 5.
[SHORT] >> GO TO 6.
4.
CHECK SPIRAL CABLE CIRCUIT 1
1.
Turn ignition switch OFF.
2.
Disconnect driver air bag module harness connector and combination switch (spiral cable) harness con-
nector.
3.
Check continuity between driver air bag module harness connector and combination switch (spiral cable)
harness connector.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Replace combination switch (spiral cable). Refer to
SR-40, "Removal and Installation"
.
5.
CHECK SPIRAL CABLE CIRCUIT 2
1.
Turn ignition switch OFF.
2.
Disconnect driver air bag module harness connector and combination switch (spiral cable) harness con-
nector.
3.
Check continuity between driver air bag module harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Replace combination switch (spiral cable). Refer to
SR-40, "Removal and Installation"
.
6.
CHECK SPIRAL CABLE CIRCUIT 3
1.
Turn ignition switch OFF.
2.
Disconnect driver air bag module harness connector and combination switch (spiral cable) harness con-
nector.
3.
Check continuity between combination switch (spiral cable) terminals.
Driver air bag module
Combination switch (spiral cable)
Continuity
Connector
Terminal
Connector
Terminal
M350
10
M32
28
Existed
11
30
M351
9
12
29
Driver side air bag module
Ground
Continuity
Connector
Terminal
M350
10
Not existed
11
M351
9
12
Revision: 2012 September
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B0001 DRIVER AIR BAG MODULE
SRC-93
< DTC/CIRCUIT DIAGNOSIS >
[FOR MEXICO]
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Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Replace combination switch (spiral cable). Refer to
SR-40, "Removal and Installation"
.
7.
CHECK SPIRAL CABLE CIRCUIT 4
Check continuity between combination switch (spiral cable) terminals.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Replace combination switch (spiral cable). Refer to
SR-40, "Removal and Installation"
.
8.
REPLACE COMBINATION SWITCH (SPIRAL CABLE)
1.
Replace combination switch (spiral cable). Refer to
SR-40, "Removal and Installation"
2.
Perform DTC confirmation procedure. Refer to
.
Is DTC detected?
YES
>> GO TO 9.
NO
>> INSPECTION END
9.
REPLACE DRIVER AIR BAG MODULE
1.
Replace driver air bag module. Refer to
SR-37, "Removal and Installation"
.
2.
Perform DTC confirmation procedure. Refer to
.
Is DTC detected?
YES
>> GO TO 10.
NO
>> INSPECTION END
10.
REPLACE AIR BAG DIAGNOSIS SENSOR UNIT
1.
Replace air bag diagnosis sensor unit. Refer to
SR-53, "Removal and Installation"
2.
Perform DTC confirmation procedure. Refer to
.
Is DTC detected?
YES
>> GO TO 1.
NO
>> INSPECTION END
Combination switch (spiral cable)
Continuity
Connector
Terminal
M350
10
11
Not existed
M351
9
12
Combination switch (spiral cable)
Continuity
Connector
Terminal
M32
28
30
Not existed
29
Revision: 2012 September
2013 MURANO
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