Mazda Mazda6 Workshop Manual Supplement page 359

STEP INSPECTION
12 Inspect if turbocharger compressor wheel
locknut is loose or has fallen down inside
turbocharger.
Is there any problem?
13 Inspect turbocharger compressor wheel by
hand.
Does wheel turn easily and smoothly?
14 Inspect if turbocharger turbine wheel is
damaged, cracked or interfering with housing on
vehicle.
Note
• Inspect all fins on each turbine wheel.
Is there any problem?
15 Is any engine oil found inside turbocharger
turbine housing?
16 Is any engine oil found inside turbocharger
compressor hosing?
17 Perform EGR system inspection.
Is EGR system okay?
18 Inspect EGR water cooler for following:
• Coolant passage clogging/restriction
• Exhaust gas clogging/restriction
Is EGR water cooler okay?
19 Inspect glow system operation.
(See T–19 RELAY INSPECTION)
Is glow system operation normal?
20 Visually inspect CKP sensor and teeth of pulse
wheel.
Are CKP sensor and teeth of pulse wheel okay?
21 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?
22 Visually inspect CMP sensor and teeth of pulse
wheel.
Are CMP sensor and teeth of pulse wheel okay?
23 Inspect fuel pressure sensor.
(See F2–79 FUEL PRESSURE SENSOR
INSPECTION)
Is fuel pressure okay?
24 Inspect suction control valve.
(See F2–54 SUCTION CONTROL VALVE
INSPECTION)
Is suction control valve okay?
TROUBLESHOOTING
RESULTS
Yes Replace turbocharger.
No Go to next step.
Yes Go to next step.
No Replace turbocharger.
Yes Replace turbocharger.
No Go to next step.
Yes Excessive amount of oil is found:
Replace turbocharger.
Small amount of oil is found:
Wipe oil off of vehicle, then go to next step.
No Go to next step.
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.
Yes Go to next step.
No Repair or replace malfunctioning part according to
EGR system operation results.
Yes Go to next step.
No Service as necessary.
Yes Go to next step.
No Repair or replace malfunctioning part according to
glow system operation results.
Yes Go to next step.
No Replace malfunctioning parts.
Yes Go to next step.
No Adjust CKP sensor position.
Yes Inspect following PIDs:
(See
• ECT
• IAT
• MAF
• MAP
• RPM
• VSS
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.
Yes Go to next step.
No Replace common rail.
Yes Go to next step.
No Repair supply pump.
(See
ACTION
F2–65 PCM INSPECTION)
F2–54 SUPPLY PUMP INSPECTION)
F2
F2–207