Mazda 3 Workshop Manual page 177

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 BRAKE SWITCH CONNECTOR
FOR POOR CONNECTION
• Turn the ignition switch off.
• Disconnect the brake switch connector.
3
• Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
• Is there any malfunction?
Downloaded from
• Open circuit in wiring harness between brake switch terminal D and PCM
terminal 1V
• Short to power supply in wiring harness between brake switch terminal D
and PCM terminal 1V
• Short to GND in wiring harness between brake switch terminal D and PCM
terminal 1V
• PCM malfunction
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 10.
No Go to the next step.
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