Mazda 3 Workshop Manual page 73

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
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
2
information 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?
INSPECT MAF/IAT SENSOR
CONNECTOR FOR POOR
CONNECTION
• Turn the ignition switch off.
• Disconnect the MAF/IAT sensor
4
connector.
• Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
• Is there any malfunction?
INSPECT IAT SENSOR
• Inspect the IAT sensor.
5
(See INTAKE AIR TEMPERATURE
(IAT) SENSOR INSPECTION
• Is there any malfunction?
INSPECT PCM CONNECTOR FOR
POOR CONNECTION
• Turn the ignition switch off.
6
• Disconnect the PCM connector.
• Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
Downloaded from
Yes Go to the next step.
Record the FREEZE FRAME DATA on the repair
No
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.
Go to the appropriate DTC inspection.
Yes
(See
No Go to the next step.
Yes Repair or replace the terminal, then go to Step 7.
No Go to the next step.
Replace the MAF/IAT sensor, then go to Step 7.
(See
Yes
TEMPERATURE (IAT) SENSOR
REMOVAL/INSTALLATION
[Z6].)
No Go to the next step.
Repair or replace the terminal, then go to the next
Yes
step.
No Go to the next step.
https://carmanualshub.com/
ACTION
DTC TABLE [Z6].)
MASS AIR FLOW (MAF)/INTAKE AIR
[Z6].)
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