Mazda 3 Workshop Manual page 209

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
• Perform the spark test.
13
(See Spark Test.)
• Is strong blue spark visible at each
cylinder?
INSPECT ENGINE COMPRESSION
• Inspect the engine compression.
14
(See COMPRESSION INSPECTION
• Is it normal?
INSPECT VARIABLE VALVE TIMING
CONTROL SYSTEM OPERATION
• Inspect variable valve timing control
system operation.
15
(See Variable Valve Timing Control System
Operation Inspection.)
• Does the variable valve timing control
system work properly?
INSPECT FUEL INJECTOR OPERATION
• Remove the fuel injector.
(See FUEL INJECTOR
REMOVAL/INSTALLATION
16
• Inspect the fuel injector (resistance,
injection amount).
(See FUEL INJECTOR
• Is the fuel injector normal?
VERIFY TROUBLESHOOTING OF DTC
P2177 COMPLETED
• Make sure to reconnect all disconnected
17
connectors.
• Clear the DTC from the PCM memory
using the WDS or equivalent.
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No
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INSPECTION.)
Yes
No Go to the next step.
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Replace suspected fuel line, then go to Step
17.
Inspect for foreign materials or stain inside fuel
filter (low pressure).
If for foreign materials or stain inside fuel filter
(low pressure), clean the fuel tank and filter.
Then go to Step 17.
Repair or replace malfunctioning part according
to spark test results, then go to Step 17.
Perform engine overhaul for repairs, then go to
Step 17.
Repair or replace malfunctioning part according
to inspection results, then go to Step 17.
(See FUEL INJECTOR
REMOVAL/INSTALLATION
Replace suspected fuel injector, then go to the
next step.
(See FUEL INJECTOR
REMOVAL/INSTALLATION
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION
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