Infiniti M45 (Y34). Manual — part 780
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SRS-7
C
D
E
F
G
I
J
K
L
M
A
B
SRS
Front Seat Belt Pre-Tensioner with Load Limiter
AHS0008G
The seat belt pre-tensioner system with load limiter is installed for
both the driver's seat and the front passenger's seat. It operates
simultaneously with the SRS air bag system in the event of a frontal
collision with an impact exceeding a specified level.
When the frontal collision with an impact exceeding a specified level
occurs, seat belt slack resulting from clothing or other factors is
immediately taken up by the pre-tensioner. Vehicle passengers are
securely restrained.
When passengers in a vehicle are thrown forward in a collision and
the restraining force of the seat belt exceeds a specified level, the
load limiter permits the specified extension of the seat belt by the
twisting of the ELR shaft, and a relaxation of the chest-area seat belt
web tension while maintaining force.
Front Side Air Bag
AHS0008H
Front side air bag is built-in type.
The front seatbacks with built-in type side air bag have the labels as
shown.
Side Curtain Air Bag
AHS0008I
The side curtain air bags have the labels as shown.
SRS444
SHIA0170E
BF-2006D
SRS-8
TROUBLE DIAGNOSIS
TROUBLE DIAGNOSIS
PFP:00004
Trouble Diagnosis Introduction
AHS0008J
CAUTION:
●
Do not 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 har-
ness connectors.
●
Do not attempt to 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-diagnosis results can be read by using “AIR BAG” warning lamp and/or CONSULT-II.
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-II 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 (Refer to
●
Fuse (Refer to
SRS-12, "Wiring Diagram — SRS —"
.)
●
System component-to-harness connections
User mode
Diagnosis mode
Display type
“AIR BAG” warning lamp
X
X
ON-OFF operation
CONSULT-II
—
X
Monitoring
TROUBLE DIAGNOSIS
SRS-9
C
D
E
F
G
I
J
K
L
M
A
B
SRS
WORK FLOW
*1:
.
*2:
*3:
SRS-21, "DIAGNOSTIC PROCE-
DURE 2"
*4:
SRS-31, "DIAGNOSTIC PROCE-
DURE 6"
.
*5
SRS-25, "DIAGNOSTIC PROCE-
DURE 3"
*6
SRS-31, "DIAGNOSTIC PROCE-
DURE 6"
PHIA0217E
SRS-10
TROUBLE DIAGNOSIS
Component Parts Location
AHS0008K
PHIA0209E
1.
Driver air bag module
2.
Front passenger air bag module
3.
Spiral cable
4.
Front side air bag module
5.
Diagnosis sensor unit
6.
LH side air bag (Satellite) sensor
7.
RH side air bag (Satellite) sensor
8.
Seat belt pre-tensioner RH
9.
Seat belt buckle switches
10. Seat belt pre-tensioner LH
11.
Side curtain air bag module
12. Crash zone sensor
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