Mazda 6 2002, Руководство по ремонту

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F–106
ON-BOARD DIAGNOSTIC
2 VERIFY RELATED SERVICE INFORMATION
AVAILABILITY
•
Check for related Service Information
availability.
•
Is any related Service Information available?
Yes Perform repair or diagnosis according to available Service
Information.
•
If vehicle is not repaired, go to next step.
No Go to next step.
3 VERIFY RELATED PENDING AND STORED
DTCs
•
Turn ignition key to OFF, then ON (Engine
OFF).
•
Verify pending and stored DTCs using WDS or
equivalent.
•
Is other DTC present?
Yes Go to appropriate DTC troubleshooting procedures.
No Go to next step.
4 IDENTIFY TRIGGER DTC FOR FREEZE FRAME
DATA
•
Is DTC P0131 and P0132 on FREEZE FRAME
DATA?
Yes Go to next step.
No Go to troubleshooting procedures for DTC on FREEZE
FRAME DATA.
5 VERIFY CURRENT INPUT SIGNAL STATUS - IS
CONCERN INTERMITTENT OR CONSTANT
•
Warm-up engine.
•
Access O2S11 for P0131 and P0132 PID using
WDS or equivalent.
•
Verify PID while racing engine (in PARK (ATX)
or NEUTRAL (MTX)).
•
Is PID reading okay?
—
More than 0.45 V when suddenly depress
accelerator pedal (rich condition)
— Less than 0.45 V just after release of
accelerator pedal (lean condition)
Yes Go to next step.
No Replace front HO2S, then go to Step 19.
6 INSPECT LONG TERM FUEL TRIM
•
Access LONGFT1 for P0131 and P0132 PID
using WDS or equivalent.
•
Compare it with FREEZE FRAME DATA
recorded at Step1.
•
Was it decreased?
Yes Engine is driven under rich condition. Go to next step.
No Engine is driven under lean condition. Go to step 9.
7 INSPECT FUEL LINE PRESSURE (EXCESSIVE
FUEL LINE PRESSURE)
•
Turn ignition key to OFF.
•
Inspect fuel line pressure.
(See
F–20 FUEL LINE PRESSURE
INSPECTION .)
•
Is fuel line pressure okay?
Yes Go to next step.
No Inspect following parts and repair or replace if necessary:
•
Fuel pump maximum pressure
•
Fuel return pipe for clogged
— If all items above are okay, replace pressure
regulator. Then, go to Step 19.
8 INSPECT PURGE SOLENOID VALVE FOR
STUCK OPEN
•
Turn ignition key to OFF.
•
Disconnect both hoses from purge solenoid
valve.
•
Blow air through purge solenoid valve.
•
Does air blow through?
Yes Replace purge solenoid valve.
No Go to Step 13.
9 INSPECT PCV VALVE OPERATION
•
Inspect PCV valve operation.
(See
F–41 PCV VALVE INSPECTION .)
•
Is PCV valve okay?
Yes Go to next step.
No Replace PCV, then go to Step 19.
10 INSPECT FUEL LINE PRESSURE (LOW FUEL
LINE PRESSURE)
•
Turn ignition key to OFF.
•
Inspect fuel line pressure.
(See
F–20 FUEL LINE PRESSURE
INSPECTION .)
•
Is fuel line pressure okay?
Yes Go to step 13.
No Go to next step.
11 INSPECT FUEL PUMP MAXIMUM PRESSURE
•
Stop engine.
•
Turn ignition key to ON (Engine OFF).
•
Perform fuel pump maximum pressure test.
(See
F–20 FUEL LINE PRESSURE
INSPECTION .)
•
Is fuel pump maximum pressure okay?
Yes Go to next step.
No Inspect fuel pump circuit for open or poor connection.
•
Repair or replace suspected circuit.
•
If circuit is okay, replace fuel pump.
Then go to Step 19.
STEP INSPECTION ACTION