Mazda 3 - Dtc P0335 [Lf]

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
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• Disconnect KS connector.
• Inspect for poor connection at terminals A and B
(such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
4
INSPECT KS
• Perform KS inspection.
(See KNOCK SENSOR (KS) INSPECTION [LF])
• Is the KS normal?
Yes
Go to the next step.
No
Replace the KS, then go to step 7.
5
INSPECT KNOCK SIGNAL CIRCUIT FOR
SHORT TO POWER SUPPLY
• Turn the ignition switch to the ON position
(Engine off).
• Measure the voltage between KS terminal A
(wiring harness-side) and body GND and KS
terminal B (wiring harness-side) and body GND?
• Is any voltage reading?
Yes
Repair or replace wiring harness for
short to power supply, then go to step 7.
No
Go to the next step.
6
INSPECT PCM CONNECTOR
• Disconnect PCM connector.
• Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
• Is there any malfunction?
Yes
Repair or replace the terminal, then go
to the next step.
No
Go to the next step.
7
VERIFY TROUBLESHOOTING OF DTC P0328
COMPLETED
• Make sure to connect all disconnected
connectors.
• Clear the DTC from the PCM memory using the
WDS or equivalent.
• Start the engine.
• Is the same DTC present?
Yes
Replace the PCM, then go to the next
step.
(See PCM REMOVAL/INSTALLATION
[LF].)
No
Go to the next step.
8
VERIFY AFTER REPAIR PROCEDURE
• Perform the "After Repair Procedure".
(See AFTER REPAIR PROCEDURE [LF].)
• Are any DTC present?
Yes
Go to the applicable DTC
troubleshooting.
(See DTC TABLE [LF].)
No
Troubleshooting completed.
DTC P0335 [LF]
B3E010201085W05