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SRS-8
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
TROUBLE DIAGNOSISPFP:00004
Trouble Diagnosis IntroductionNHS00090
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 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 DIAGNOSIS 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
Make sure the following parts are in good order.
Battery (Refer to SC-4, "How to Handle Battery" .)
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
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TROUBLE DIAGNOSIS
SRS-9
C
D
E
F
G
I
J
K
L
MA
B
SRS
Revision: 2006 January2006 M35/M45
WORK FLOW
*1:SRS-8, "Preliminary Check".*2:SRS-19, "SRS Operation Check".*3:SRS-21, "DIAGNOSTIC PROCE-
DURE 2".
*4:SRS-32, "
DIAGNOSTIC PROCE-
DURE 6".*5:SRS-25, "
DIAGNOSTIC PROCE-
DURE 3".*6:SRS-32, "
DIAGNOSTIC PROCE-
DURE 6".
PHIA0217E
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SRS-10
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
Component Parts LocationNHS00091
*: The bottom of front passenger seat
PHIA1110E
1. Front passenger air bag module 2. Driver air bag module 3. Spiral cable
4. Diagnosis sensor unit 5. Side air bag (Satellite) sensor (RH/LH) 6. Front seat belt pre-tensioner (RH/LH)
7. Seat belt buckle switch (RH/LH) 8. Front side air bag modules 9.Side curtain air bag module
10. Crash zone sensor 11. Belt tension sensor 12. Belt tension sensor connector *
13. Seat pressure sensor * 14. Occupant classification system control unit *
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TROUBLE DIAGNOSIS
SRS-11
C
D
E
F
G
I
J
K
L
MA
B
SRS
Revision: 2006 January2006 M35/M45
SchematicNHS00092
THWT0131E
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SRS-12
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
Wiring Diagram — SRS —NHS00093
THWT0132E
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TROUBLE DIAGNOSIS
SRS-13
C
D
E
F
G
I
J
K
L
MA
B
SRS
Revision: 2006 January2006 M35/M45
THWT0133E
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SRS-14
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
THWT0134E
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TROUBLE DIAGNOSIS
SRS-15
C
D
E
F
G
I
J
K
L
MA
B
SRS
Revision: 2006 January2006 M35/M45
THWT0135E