Mazda 3 Workshop Manual page 219

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
• Front HO2S deterioration
• Front HO2S heater malfunction
• MAF sensor malfunction
• Pressure regulator (built-in fuel pump unit) malfunction
• Fuel pump malfunction
• EGR valve stuck open
• Variable tumble shutter valve actuator improper operation
• Purge solenoid valve improper operation
• Purge solenoid valve malfunction (stuck open)
• Purge solenoid hoses improper connection
• Variable valve timing control system improper operation
• PCV valve malfunction
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?
VERIFY RELATED PENDING CODE OR
STORED DTC
• Turn the ignition switch off, then to the ON
position (Engine off).
3
• Verify the related PENDING CODE or
stored DTCs.
• Are other DTCs present?
IDENTIFY TRIGGER DTC FOR FREEZE
FRAME DATA
4
• Is DTC P2188 on FREEZE FRAME
DATA?
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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.
• If misfire DTC is present, go to Step 8.
• If other DTC is present, go to the appropriate
Yes
DTC inspection.
(See DTC TABLE [Z6].)
• If drive ability concern is present, go to Step
8.
No
• If other, go to the next step.
Yes Go to the next step.
Go to the FREEZE FRAME DATA DTC
inspection.
No
(See DTC TABLE [Z6].)
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