Mazda 3 Workshop Manual page 260

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
Diagnostic procedure
STEP
VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
1
• Has FREEZE FRAME DATA been recorded?
VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
• Verify related service repair information
2
availability.
• Is any related repair information available?
INSPECT POOR CONNECTION OF FRONT
HO2S CONNECTOR
• Turn the ignition switch off.
• Disconnect front HO2S connector.
3
• Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
• Is there any malfunction?
4 INSPECT FRONT HO2S HEATER
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INSPECTION
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ACTION
Yes Go to the next step.
Record the FREEZE FRAME DATA on the
No
repair order, then go to the next step.
Perform repair or diagnosis according to
the available repair information.
Yes
• If the vehicle is not repaired, go to the
next step.
No Go to the next step.
Repair or replace the terminal, then go to
Yes
Step 9.
No Go to the next step.
Yes Go to the next step.
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