Dtc P0327 [Lf] - Mazda 3 Workshop Manual

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
INSPECT SEALING OF ENGINE
COOLANT PASSAGE
• Perform ENGINE COOLANT LEAKAGE
INSPECTION.
10
(See ENGINE COOLANT LEAKAGE
INSPECTION.)
• Is there any malfunction?
INSPECT ENGINE COMPRESSION
• Inspect engine compression.
11
(See COMPRESSION INSPECTION
• Is engine compression normal?
INSPECT FUEL INJECTOR OPERATION
• Remove the fuel injector from suspected
cylinder.
• Switch the injector with the injector on
12
other cylinder.
• Start the engine and idle it.
• Is misfire DTC for cylinder which has a
suspected fuel injector?
VERIFY TROUBLESHOOTING OF
MISFIRE DTC COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Start the engine.
• Clear the DTC from the PCM memory
13
using the WDS or equivalent.
• Perform the PCM Adaptive Memory
Produce Drive Mode. (See
MODE [LF].)
• Is the PENDING CODE for this DTC
present?
VERIFY AFTER REPAIR PROCEDURE
• Perform the "After Repair Procedure".
14
(See AFTER REPAIR PROCEDURE
• Are any DTC present?
Downloaded from
Yes
No Go to the next step.
Yes Go to the next step.
[LF].)
No Overhaul the engine, then go to Step 13.
Yes Replace the injector, then go to the next step.
No Go to the next step.
Yes
No Go to the next step.
OBD DRIVE
Yes
[LF].)
No Troubleshooting completed.

DTC P0327 [LF]

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Repair or replace the malfunctioning part
according to inspection result.
Then go to Step 13.
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION
Go to the applicable DTC troubleshooting.
(See DTC TABLE [LF].)
- automotive repair manuals website
[LF].)
B3E010201085W03