Nissan Quest E52. Instruction — part 1121
SYSTEM
SRC-13
< SYSTEM DESCRIPTION >
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• Operation of air bag diagnosis sensor unit when air bag diagnosis sensor unit receives information from
Occupant Detection System.
• Even if zero point reset is “complete”, always perform zero point reset after the removal and installation of
seat or the removal of control unit harness connector.
Status (front passenger
seat)
Passenger air bag
Front passenger air
bag OFF indicator
Air bag warning lamp
Seat belt warning lamp
(when front passenger
seat is unbuckled)
Empty
Suppress
OFF
OFF
OFF
An object
Suppress
ON
OFF
OFF
Child/ child-seat
Suppress
ON
OFF
ON
Adult
Enable to deploy
OFF
OFF
ON
Malfunction
Suppress
ON
Blinking
OFF
Zero point reset
Not yet performed (NIS-
SAN genuine parts
only)
Suppress
ON
Blinking
OFF
SRC-14
< SYSTEM DESCRIPTION >
SYSTEM
Schematic
INFOID:0000000009649843
JMHIA2033GB
DIAGNOSIS SYSTEM (AIR BAG)
SRC-15
< SYSTEM DESCRIPTION >
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DIAGNOSIS SYSTEM (AIR BAG)
Description
INFOID:0000000009649844
CAUTION:
• Never use electrical test equipment on any circuit related to the SRS unless instructed in this Ser-
vice Instruction. 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:0000000009649845
ON-BOARD DIAGNOSIS
There are two self diagnosis functions with air bag warning lamp 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 1second 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 3times 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
–
×
SRC-16
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (AIR BAG)
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.
Air bag warning lamp operation (user mode)
SRS condition
Reference item
• No malfunction is detected
• No further action is necessary
—
• The system is malfunctioning
• Self diagnostic result is not erased af-
ter repair
Erase “Self Diagnostic Result”
Refer to
, How to Erase Self-diagnostic
Result
Battery voltage is low (less than 9 V) or
high battery voltage (more than 16V)
Check “CAUSE OF WARNING” in
“Special Function” with CONSULT
Refer to
Occupant detection function is disabled
Refer to
Zero point reset is incomplete
Refer to
RESET : Special Repair Require-
ment"
Intermittent malfunction is detected in
the past
Go to
GI-42, "Intermittent Incident"
• Air bag is deployed
• Seat belt pre-tensioner is deployed
Go to
or
• Air bag diagnosis sensor unit is mal-
functioning
• Air bag power supply circuit is mal-
functioning
• Air bag warning lamp circuit is mal-
functioning
Go to
• Air bag diagnosis sensor unit is mal-
functioning
• Air bag warning lamp circuit is mal-
functioning
Go to
SHIA0011E
SHIA0012E
SHIA0013E
SHIA0014E
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