Nissan Altima L32. Instruction — part 1370
SRC-10
< FUNCTION DIAGNOSIS >
OCCUPANT CLASSIFICATION SYSTEM
OCCUPANT CLASSIFICATION SYSTEM
System Diagram
INFOID:0000000004205343
Occupant Classification System (OCS)
INFOID:0000000004205344
The occupant classification system (OCS) identifies if a child or child seat is present in the front passenger
seat. The OCS receives inputs from the occupant classification sensor mat (located inside the passenger seat
cushion assembly). Depending on classification of the passenger, the OCS control unit sends a signal to the
air bag diagnosis sensor unit. The air bag diagnosis sensor unit uses this signal and the seat belt buckle
switch RH signal to determine deployment or non deployment of the front passenger air bag module in the
event of a collision. Depending on the signals received, the air bag diagnosis sensor unit can disable the front
passenger air bag module completely.
NOTE:
In case of customer concern, CONSULT-III can be used to confirm the front passenger air bag status (readi-
ness).
Front Passenger Air Bag Status Conditions
NOTE:
Passenger does not meet Occupant Classification System specifications for passenger air bag activation.
ALHIA0026GB
Front Passenger Seat
(Condition)
PASS AIR BAG OFF Indicator
(Status)
Front Passenger Air Bag Status
(Readiness)
CONSULT-III Display
Seat occupied
OFF
Active (enabled)
ON
Seat occupied
NOTE
ON
Deactivated (disabled)
OFF
Seat empty
OFF
Deactivated (disabled)
OFF
1.
Seat cushion foam
2.
OCS control unit
3.
OCS sensor mat
4.
OCS sensor mat cell (internal)
ALHIA0027ZZ
PASSENGER SEAT BELT WARNING SYSTEM
SRC-11
< FUNCTION DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SRC
N
O
P
PASSENGER SEAT BELT WARNING SYSTEM
System Diagram
INFOID:0000000004205345
System Description
INFOID:0000000004205346
The seat belt warning lamp (1) will remind the driver if the driver or
front passenger seat belt should be buckled. The system works in
conjunction with the occupant classification system. Refer to
10, "Occupant Classification System (OCS)"
Passenger Seat Belt Warning System Operation
Component Parts Location
INFOID:0000000004205347
SRC-7, "SRS Component Parts Location"
ALHIA0028GB
ALHIA0029ZZ
Driver seat status
(Ignition switch ON)
Passenger seat status
Seat belt buckle switch
LH status
Seat belt buckle switch
RH status
Seat belt warning lamp
Seat occupied
Seat occupied
Buckled
Buckled
Off
Unbuckled
On
Seat unoccupied
—
Off
—
Unbuckled
On
SRC-12
< FUNCTION DIAGNOSIS >
ON BOARD DIAGNOSTIC (OBD) SYSTEM
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Trouble Diagnosis Introduction
INFOID:0000000004205348
CAUTION:
• Do not use electrical test equipment on any circuit related to the SRS unless instructed to do so in
this Instruction. SRS wiring harnesses can be identified by yellow and/or orange harness con-
nectors.
• Do not attempt to repair, splice or modify SRS wiring harnesses. If a harness is damaged, replace it
with a new one.
• Keep ground connections clean.
DIAGNOSIS FUNCTION
The SRS self-diagnosis results can be read by using “AIR BAG” warning lamp and/or CONSULT-III.
The User mode is exclusively prepared for the customer (driver). This mode warns the driver of a system mal-
function 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-III are as follows:
HOW TO PERFORM TROUBLE DIAGNOSES FOR QUICK AND ACCURATE REPAIR
A good understanding of the malfunction conditions can make troubleshooting faster and more accurate.
In general, each customer feels differently about a malfunction. It is important to fully understand the symp-
toms or conditions for a customer complaint.
Information From Customer
WHAT - Vehicle model
WHEN - Date, Frequencies
WHERE - Road conditions
HOW - Operating conditions, Symptoms
Preliminary Check
Check that the following parts are in good order.
• Battery
• Fuse
• System component-to-harness connections
SRS Operation Check
INFOID:0000000004205349
DIAGNOSTIC PROCEDURE 1
Checking SRS Operation Using “AIR BAG” Warning Lamp—User Mode
1. Turn the ignition switch from OFF to ON, and check that the air bag warning lamp blinks.
2. Compare the SRS air bag warning lamp blinking pattern with the
examples.
User mode
Diagnosis mode
Display type
“AIR BAG” warning lamp
X
X
ON-OFF operation
CONSULT-III
—
X
Monitoring
BF-1845D
ON BOARD DIAGNOSTIC (OBD) SYSTEM
SRC-13
< FUNCTION DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SRC
N
O
P
SRS Air bag warning lamp examples
DIAGNOSTIC PROCEDURE 2
1. Connect CONSULT-III.
2. Diagnostic code is displayed on "SELF-DIAG [CURRENT]".
If no malfunction is detected on "SELF-DIAG [CURRENT]", but malfunction is detected in "SRS Operation
Check" using the "AIR BAG" warning lamp, the following cases may exist:
• "SELF-DIAG [PAST]" memory might not be erased.
• The SRS system malfunctions intermittently.
Perform DIAGNOSTIC PROCEDURE 4. Refer to
SRC-14, "Self-Diagnosis Function (Without CONSULT-
“AIR BAG” warning lamp (User mode)
SRS condition
Reference item
• No malfunction is detected.
• No further action is necessary.
—
The system is malfunctioning and
needs to be repaired as indicated.
Proceed to DIAGNOSTIC PROCE-
DURE 2 that follows (with CON-
SULT-III) or
Diagnosis without CONSULT-III"
(without CONSULT-III).
• Air bag is deployed.
• Seat belt pre-tensioner is deployed.
Proceed to COLLISION DIAGNO-
SIS
SR-20, "For Frontal Collision"
SR-21, "For Side and Rollover Colli-
sion"
.
• Air bag diagnosis sensor unit is mal-
functioning.
• Air bag power supply circuit is mal-
functioning.
• SRS air bag warning lamp circuit is
malfunctioning.
Refer to
.
• Air bag diagnosis sensor unit is mal-
functioning.
• Air bag warning lamp circuit is mal-
functioning.
Refer to
.
SHIA0011E
SHIA0012E
SHIA0013E
SHIA0014E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст