Mazda 3 Workshop Manual page 413

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
• PENDING CODE is available if PCM detects the above malfunction conditions
during first drive cycle.
• FREEZE FRAME DATA is available.
• DTC is stored in the PCM memory.
• Misfire
• Front HO2S deterioration
• Front HO2S heater malfunction
• MAF sensor malfunction
• Pressure regulator (built-in fuel injection pump) malfunction
• Fuel pump malfunction
• Fuel filter clogged or restricted
POSSIBLE
CAUSE
• Fuel leakage on fuel line from fuel delivery pipe and fuel pump
• Leakage exhaust system
• Purge solenoid valve malfunction
• Purge solenoid hoses improper connection
• Air suction in intake-air system
• Insufficient engine compression
Diagnostic procedure
STEP INSPECTION
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 DTCS
• Turn ignition switch to off, then the ON
position (Engine off).
3
• Verify related pending code or stored
DTCs.
• Is other DTC present?
Downloaded from
Yes Go to the next step.
No
Yes
No Go to the next step.
Yes
No
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ACTION
Record the FREEZE FRAME DATA on the
repair order, then go to the next step.
Perform repair or diagnosis according to the
available repair information.
• If the vehicle is not repaired, go to the next
step.
If misfire DTC is present, go to Step 8.
If other DTC is present, go to appropriate DTC
troubleshooting procedure.
(See DTC TABLE [LF].)
If drivability concern is present, go to Step 8.
If not, go to the next step.
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