Mazda 3 Workshop Manual page 159

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
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 VACUUM HOSE FOR POOR
CONNECTION
• Are the vacuum hoses connected
4
completely?
(See INTAKE-AIR SYSTEM HOSE
ROUTING DIAGRAM
INSPECT IAC VALVE
• Inspect the IAC valve.
5
(See IDLE AIR CONTROL (IAC) VALVE
INSPECTION [Z6].)
• Is there any malfunction?
INSPECT ACCELERATOR CABLE
FREE PLAY
• Inspect the accelerator cable free play.
6
(See ACCELERATOR CABLE
INSPECTION/ADJUSTMENT
• Is there any malfunction?
INSPECT THROTTLE VALVE
• Remove the throttle body.
7
(See INTAKE-AIR SYSTEM
REMOVAL/INSTALLATION
• Is there any malfunction?
INSPECT IAT SENSOR
• Inspect the IAT sensor.
8
(See INTAKE AIR TEMPERATURE (IAT)
SENSOR INSPECTION
• Is there any malfunction?
INSPECT ECT SENSOR
9
• Inspect the ECT sensor.
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No Go to the next step.
Yes Go to the next step.
No
[Z6].)
Yes
No Go to the next step.
Yes
[Z6].)
No Go to the next step.
Yes
[Z6].)
No Go to the next step.
Yes
[Z6].)
No Go to the next step.
Yes
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Go to the applicable DTC inspection.
(See DTC TABLE [Z6].)
Connect the vacuum hose completely, then go to
Step 11.
(See INTAKE-AIR SYSTEM HOSE ROUTING
DIAGRAM [Z6].)
Repair IAC valve, then go to Step 11.
(See IDLE AIR CONTROL (IAC) VALVE
REMOVAL/INSTALLATION
Adjust the accelerator cable free play, then go to
Step 11.
(See ACCELERATOR CABLE
INSPECTION/ADJUSTMENT
Clean or repair the throttle body, then go to Step
11.
(See INTAKE-AIR SYSTEM
REMOVAL/INSTALLATION
Replace the MAF/IAT sensor, then go to Step 11.
(See MASS AIR FLOW (MAF)/INTAKE AIR
TEMPERATURE (IAT) SENSOR
REMOVAL/INSTALLATION
Replace the ECT sensor, then go to Step 11.
(See ENGINE COOLANT TEMPERATURE
(ECT) SENSOR REMOVAL/INSTALLATION
[Z6].)
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