Mazda 3 Workshop Manual page 424

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
1
• Has FREEZE FRAME DATA been recorded?
VERIFY 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 ON position
(Engine off).
3
• Verify the related PENDING CODE or stored
DTCs.
• Is the DTC P2177 or P2187 also present?
IDENTIFY TRIGGER DTC FOR FREEZE
FRAME DATA
4
• Is DTC P2196 on FREEZE FRAME DATA?
VERIFY CURRENT INPUT SIGNAL STATUS
• Connect the WDS or equivalent to the DLC-2.
• Verify the following PIDs.
(See PCM INSPECTION
5 - ECT
- MAF
- TP
- VSS
• Are the PIDs normal?
VERIFY CURRENT INPUT SIGNAL STATUS
OF MAF SENSOR
• Connect the WDS or equivalent to the DLC-2.
• Start the engine.
6
• Access the MAF PID.
• Verify that the MAF PID changes quickly
according to engine speed.
• Is the PID normal?
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[LF].)
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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.
Go to applicable DTC troubleshooting.
No
(See DTC TABLE [LF].)
Go to the appropriate DTC inspection.
Yes
(See DTC TABLE [LF].)
No Go to the next step.
Yes Go to the next step.
Go to FREEZE FRAME DATA DTC
inspection.
No
(See DTC TABLE [LF].)
Yes Go to the next step.
Inspect the malfunctioning part according
to the inspection results.
No
Then go to Step 10.
Yes Go to the next step.
Replace MAF/IAT sensor, then go to Step
No
10.
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