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SRS-8
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
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Trouble Diagnosis IntroductionEHS0016M
CAUTION:
Do not use electrical test equipment on any circuit related to the SRS unless instructed to do so in
this Service Manual. 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-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 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 XXON-OFF operation
CONSULT-II —XMonitoring
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WORK FLOW
*1:SRS-8*2:SRS-20*3: SRS-31
*4:SRS-38
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SRS-10
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
SRS Components Parts LocationEHS0016N
1. Side curtain air bag modules 2. Front RH side air bag module 3. Belt tension sensor
4. RH side air bag (satellite) sensor 5. Front RH seat belt pre-ten-
sioner6. Seat belt buckle pre-tensioner assembly
RH
7. Occupant classification system sen- sor 8. Occupant classification system
control unit 9. Front passenger air bag off indicator
10. Front passenger air bag module 11. Crash zone sensor 12. Air bag warning lamp
13. Spiral cable 14. Driver air bag module15. LH side air bag (satellite) sensor
16. Front LH seat belt pre-tensioner 17. Air bag diagnosis sensor unit 18. Front LH side air bag module
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SchematicEHS0016O
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SRS-12
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
Wiring Diagram— SRS —EHS0016P
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SRS-14
TROUBLE DIAGNOSIS
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TROUBLE DIAGNOSISSRS-15
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