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Mazda Mazda6 - Page 353

Mazda Mazda6
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TROUBLESHOOTING
F2–201
F2
End Of Sie
14 Is any engine oil found inside turbocharger
compressor hosing?
Yes Wipe oil off of vehicle and install all removed parts in
Step 10. Then, go to next step.
No Turbocharger is okay.
Install all parts removed in Step10.
Then, go to next step.
15 Perform EGR system inspection.
Is EGR system okay?
Yes Go to next step.
No Repair or replace malfunctioning part according to
EGR system operation results.
16 Inspect glow system operation.
(See T–19 RELAY INSPECTION)
Is glow system operation normal?
Yes Go to next step.
No Repair or replace malfunctioning part according to
glow system operation results.
17 Visually inspect CKP sensor and teeth of pulse
wheel.
Are CKP sensor and teeth of pulse wheel okay?
Yes Go to next step.
No Replace malfunctioning parts.
18 Measure gap between CKP sensor and teeth of
pulse wheel.
Specification
1.5—2.5 mm {0.059—0.098 in}
Is gap within specification?
Yes Go to next step.
No Adjust CKP sensor position.
19 Visually inspect CMP sensor and teeth of pulse
wheel.
Are CMP sensor and teeth of pulse wheel okay?
Yes Inspect following PIDs:
(See F2–65 PCM INSPECTION)
• ECT
• IAT
• MAF
• MAP
• RPM
If PID value is not as specified, repair or replace
malfunctioning parts.
If PID value is okay, go to next step.
No Replace malfunctioning parts.
20 Is engine compression correct?
(See B2–8 COMPRESSION INSPECTION)
Yes Go to next step.
No Inspect for following:
• Damaged valve seat
• Worn valve stem and valve guide
• Worn or stuck piston ring
• Worn piston, piston ring or cylinder
• Improper valve timing
Service as necessary.
21 Inspect suction control valve.
(See F2–54 SUCTION CONTROL VALVE
INSPECTION)
Is suction control valve okay?
Yes Inspect following:
• Boost sensor
• MAF/IAT sensor
• IAT sensor No.2
• Fuel pressure sensor
• Accelerator position sensor
No Repair supply pump.
(See F2–54 SUPPLY PUMP INSPECTION)
22 Verify test results.
• If okay, return to diagnostic index to service any additional symptoms.
• If malfunction remains, replace PCM. (See F2–64 PCM REMOVAL/INSTALLATION)
STEP INSPECTION RESULTS ACTION

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