Mazda 6 2002, Руководство по ремонту

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F–206
TROUBLESHOOTING
End Of Sie
11 Install fuel pressure gauge between fuel pipe
and fuel distributor.
Connect jumper wire between F/P terminal at
DLC-2 in engine compartment and GND.
Turn ignition switch to ON position.
Is fuel line pressure correct with ignition switch
to ON position?
(See
F–20 FUEL LINE PRESSURE
INSPECTION )
Yes Go to next step.
No Zero or low:
Inspect for clogged fuel line.
If okay, replace fuel pump unit.
High:
Replace fuel pump unit.
12 Visually inspect for fuel leakage at fuel injector
O-ring and fuel line.
Service as necessary.
Is fuel line pressure held after ignition switch is
turned off?
(See
F–20 FUEL LINE PRESSURE
INSPECTION )
Yes Go to next step.
No Inspect fuel injector.
If fuel injector is okay, replace fuel pump unit.
13 Note
•
Following test is for engine stalling with A/
C on. If other symptom exists, go to next
step.
Connect a pressure gauge to A/C low and high
pressure side lines.
Turn A/C on and measure low side and high side
pressure.
Are pressure within specifications?
(See
U–12 REFRIGERANT PRESSURE
CHECK .)
Yes Go to next step.
No If A/C is always on, go to symptom troubleshooting
"No.24 A/C is always on or A/C compressor runs
continuously".
For other symptoms, inspect following:
•
Refrigerant charging amount
•
Condenser fan operation
14 Note
•
The following test should be performed for
symptom with cruise control ON. If other
symptoms exist, go to next step.
Inspect cruise control system.
Is cruise control system okay?
Yes Go to next step.
No Repair or replace malfunctioning parts.
15 Disconnect vacuum hose between purge
solenoid valve and intake manifold from purge
solenoid valve side.
Plug opening end of vacuum hose.
Drive vehicle.
Does engine condition improve? Yes Go to next step.
Inspect if purge solenoid valve sticks open
mechanically.
Inspect evaporative emission control system.
No Go to next step.
16 Visually inspect CMP sensor and projections of
camshaft pulley.
Are CMP sensor and projections of camshaft
pulley okay? Yes Go to next step.
No Replace malfunctioning parts.
17 Inspect VTCS operation.
(See
F–231 Variable Tumble Control System
(VTCS) Operation Inspection .)
Is VTCS okay?
Yes Go to next step.
No Replace or replace malfunctioning parts.
18 Inspect EGR system.
(See
F–233 EGR Control System Inspection .)
Is EGR system okay?
Yes Go to next step.
No Replace malfunctioning parts.
19 Is engine compression correct? Yes Inspect following:
•
Valve timing
•
Internal transaxle part (ATX)
•
Clutch (MTX)
No Inspect for cause.
20 Verify test results.
•
If okay, return to diagnostic index to service any additional symptoms.
•
If malfunction remains, replace PCM.
STEP INSPECTION RESULTS ACTION