Initial Inspection and Diagnostic Overview

TROUBLE DIAGNOSIS


Trouble Diagnosis Introduction


CAUTION:
- Do not use electrical test equipment on any circuit related to the SRS unless instructed in this Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness 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-III.
The User mode is exclusively prepared for the customer (driver). This mode warns the driver of a system malfunction 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 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 symptoms 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 Procedures.)
- Fuse (Refer to Electrical Diagrams.)
- System component-to-harness connections

WORK FLOW






DETAILED FLOW
1.GET INFORMATION FOR SYMPTOM
Get the detailed information from the customer about the symptom.
GO TO 2.
2.PERFORM PRELIMINARY CHECK
At the begining of inspection, confirm the condition of power supply circuit, check that the battery is charged and fuses and fusible links are not blown.
Is power supply circuit normal?
YES - GO TO 3 or GO TO 4.
NO - Repair or replace the battery and fuse/fusible links.
3.PERFORM SELF-DIAGNOSIS USING "CONSULT-III" (WITH CONSULT-III)
Check the screen of CONSULT-III.
Is malfunctioning part displayed on CONSULT-III?
YES - GO TO 5.
NO - Repeat DTC confirmation with diagnostic procedure.
4.PERFORM SELF-DIAGNOSIS "AIR BAG" WARNING LAMP (WITHOUT CONSULT-III)
Check the warning lamp status.
Is malfunctioning part detected?
YES - GO TO 5.
NO - Repeat DTC confirmation with diagnostic procedure.
5.REPAIR OR REPLACE
Repair or replace the malfunctioning part.
After the malfunctioning is repaired, erase the self-diagnostic result. Refer to Diagnosis System (Airbag).
GO TO 6.
6.FINAL CHECK DIAGNOSIS MODE AND USER MODE
Check the screen of CONSULT-III and/or Air bag warning lamp status.
Are the malfunctions corrected?
YES - INSPECTION END.
NO - GO TO 3 or GO TO 4.