Mazda 3 Workshop Manual page 215

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
• Fuel filter clogged or restricted
• 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
• Variable valve timing control system improper operation
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 P2187 on FREEZE FRAME
DATA?
VERIFY CURRENT INPUT SIGNAL
STATUS (IGNITION SWITCH TO ON/IDLE)
• Access ECT, MAF, TP and VSS PIDs
5
using WDS or equivalent.
• Is there any signal that is far out of
specification when KOER?
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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].)
Inspect suspected sensor and excessive
resistance in related wiring harnesses.
Yes
Repair or if necessary.
Then go to Step 17.
No Go to the next step.
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