NISSAN LATIO 2008 Service Repair Manual

TROUBLE DIAGNOSIS
SRS-7
< SYMPTOM DIAGNOSIS >
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TROUBLE DIAGNOSIS
Trouble Diagnosis IntroductionINFOID:0000000001703915
CAUTION:
• Do not use electrical test equipment on any circuit related to the SRS unless instructed to do so in
this Service Manual.
• 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 (Refer to SC-4, "
How to Handle Battery".)
• Fuses (Refer to SRS-10, "
Schematic".)
• System component-to-harness connections
WORK FLOW
User mode Diagnosis mode Display type
“AIR BAG” warning lamp X X ON-OFF operation
CONSULT-III — X Monitoring

SRS-8
< SYMPTOM DIAGNOSIS >
TROUBLE DIAGNOSIS
*1: "PRELIMINARY CHECK" *2:SRS-18*3:SRS-19
*4:SRS-27
WHIA0348E

TROUBLE DIAGNOSIS
SRS-9
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SRS Component Parts LocationINFOID:0000000001703916
1. Crash zone sensor 2. Spiral cable 3. Front passenger air bag off indicator
4. Front LH seat belt pre-tensioner
LH side air bag (satellite) sensor5. Air bag diagnosis sensor unit 6. Front LH side air bag module
7. Seat belt buckle switch (LH)
Seat belt buckle switch (RH)8. Occupant classification system control
unit
Occupant classification system sensor9. Front RH seat belt pre-tensioner
RH side air bag (satellite) sensor
Belt tension sensor
10. Front RH side air bag module 11. RH side curtain air bag module 12. LH side curtain air bag module
13. Front passenger air bag module 14. Driver air bag module
WHIA0329E

SRS-10
< SYMPTOM DIAGNOSIS >
TROUBLE DIAGNOSIS
Schematic
INFOID:0000000001703917
WHWA0296E

TROUBLE DIAGNOSIS
SRS-11
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Wiring Diagram - SRS-INFOID:0000000001703918
WHWA0297E

SRS-12
< SYMPTOM DIAGNOSIS >
TROUBLE DIAGNOSIS
WHWA0298E

TROUBLE DIAGNOSIS
SRS-13
< SYMPTOM DIAGNOSIS >
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WHWA0299E

SRS-14
< SYMPTOM DIAGNOSIS >
TROUBLE DIAGNOSIS
WHWA0348E

TROUBLE DIAGNOSIS
SRS-15
< SYMPTOM DIAGNOSIS >
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WHWA0301E

SRS-16
< SYMPTOM DIAGNOSIS >
TROUBLE DIAGNOSIS
CONSULT-III Function (AIR BAG)
INFOID:0000000001703919
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.
WHWA0349E