Mazda 3 Workshop Manual page 408

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
INSPECT FUEL LINE FROM FUEL PUMP
TO FUEL DELIVERY PIPE
12
• Visually inspect fuel line for any leakage.
• Is any fuel leakage found?
INSPECT IGNITION SYSTEM
• Carry out spark test.
13
(See Spark Test.)
• Is strong blue spark visible at each
cylinder?
INSPECT ENGINE COMPRESSION
• Inspect engine compression.
14
(See COMPRESSION INSPECTION
• Is it normal?
INSPECT FUEL INJECTOR OPERATION
• Remove fuel injector.
• Inspect fuel injector (resistance, injection
15
amount).
(See FUEL INJECTOR
• Is fuel injector normal?
VERIFY TROUBLESHOOTING OF DTC
P2177 COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear DTC from PCM memory using WDS
or equivalent.
16
• Perform the PCM Adaptive Memory
Produce Drive Mode.
(See OBD DRIVE MODE
• Is the PENDING CODE for this DTC
present?
VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
17
(See AFTER REPAIR PROCEDURE
• Is there any DTC present?
Downloaded from
Yes
No
Yes Go to the next step.
No
Yes Go to the next step.
[LF].)
No
Yes Go to the next step.
No
INSPECTION.)
Yes
No Go to the next step.
[LF].)
Yes
[LF].)
No Troubleshooting completed.
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Replace suspected fuel line, then go to Step
16.
Inspect for foreign materials or stain inside fuel
filter (low-pressure).
If for foreign materials or stain inside fuel filter
(low-pressure), clean of fuel tank and filter.
Then go to Step 16.
Repair or replace malfunctioning part according
to spark test result, then go to Step 16.
Implement engine overhaul for repairs, then go
to Step 16.
Replace suspected fuel injector, then go to the
next step.
Replace PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION
Go to the applicable DTC inspection.
(See DTC TABLE [LF].)
- automotive repair manuals website
[LF].)