Nissan Murano. Instruction — part 1289
SRC-4
< BASIC INSPECTION >
[FOR USA AND CANADA]
DIAGNOSIS AND REPAIR WORK FLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORK FLOW
Work Flow
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OVERALL SEQUENCE
DETAILED FLOW
JMHIA1324GB
DIAGNOSIS AND REPAIR WORK FLOW
SRC-5
< BASIC INSPECTION >
[FOR USA AND CANADA]
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1.
INTERVIEW THE CUSTOMER FOR THE SYMPTOM
Interview the customer for the symptom (the condition and the environment when the incident/malfunction
occurs).
>> GO TO 2.
2.
CHECK SYMPTOM
Check the symptom from the customer information.
>> GO TO 3.
3.
CHECK WARNING LAMP OPERATION
Check air bag warning lamp operation in the user mode. Refer to
SRC-15, "On Board Diagnosis Function"
Are any malfunction detected?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
CHECK LOW VOLTAGE
Check low voltage. Refer to
Are any malfunction detected?
YES
>> GO TO 9.
NO
>> Check intermittent incident. Refer to
GI-44, "Intermittent Incident"
.
5.
CHECK SELF DIAGNOSTIC RESULTS
Check self diagnostic result with CONSULT or diagnosis mode.
If it is impossible to switch to diagnosis mode, follow the same procedure that DTC is not detected.
NOTE:
Perform the following procedure if DTC is detected.
• Record DTC (Print them out with CONSULT.)
• Erase self diagnostic result.
• Study the relationship between the malfunction that DTC or air bag warning lamp indicates and the symptom
that the customer describes.
• Check related service bulletins for information.
Is DTC detected?
YES
>> GO TO 6.
NO
>> GO TO 7.
6.
PERFORM DTC CONFIRMATION PROCEDURE
Perform DTC CONFIRMATION PROCEDURE for the DTC.
>> GO TO 8.
7.
PERFORM DIAGNOSIS ACCORDING TO WARNING LAMP OPERATION
1.
Check air bag warning lamp operation in the user mode. Refer to
SRC-15, "On Board Diagnosis Func-
2.
Perform Diagnosis Procedure for the air bag warning lamp operation. Refer to
(USER MODE).
>> GO TO 9.
8.
DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE
Inspect according to Diagnostic Procedure of the DTC.
>> GO TO 9.
9.
REPAIR OR REPLACE THE MALFUNCTION PART
SRC-6
< BASIC INSPECTION >
[FOR USA AND CANADA]
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.
SRS AIR BAG SYSTEM
SRC-7
< SYSTEM DESCRIPTION >
[FOR USA AND CANADA]
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SYSTEM DESCRIPTION
SRS AIR BAG SYSTEM
System Diagram
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System Description
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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
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.
JMHIA1410GB
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