Dtc P0328 - Mazda 6 2002 Workshop Manual

STEP
6 INSPECT FOR SHORT CIRCUITS
• Inspect continuity between knock sensor
female terminals A and B (harness-side).
• Is there continuity?
7 INSPECT PCM CONNECTOR TERMINAL
• Turn ignition key to OFF.
• Disconnect PCM connector.
• Inspect for poor connection at terminals 2P and
2S (damaged, pulled-out pins, corrosion, etc.).
• Is there any malfunction?
8 VERIFY TROUBLESHOOTING OF DTC P0327
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear DTC from memory using WDS or
equivalent.
• Perform KOEO/KOER self-test.
(See F–66 KOEO/KOER
• Is same DTC present?
9 VERIFY AFTER REPAIR PROCEDURE
• Perform “After Repair Procedure”.
(See F–66 AFTER REPAIR
• Is there any DTC present?
End Of Sie

DTC P0328

DTC P0328 Knock sensor circuit high input
• PCM monitors input signal from knock sensor when engine is running. If input voltage at PCM terminals
between 2P and 2S is above 4.9 V, PCM determines that knock sensor circuit has a malfunction.
Diagnostic support note
DETECTION
• This is a continuous monitor (CCM).
CONDITION
• MIL illuminates if PCM detects the above malfunction conditions during first drive cycle.
• PENDING CODE is available if PCM detects the above malfunction condition.
• FREEZE FRAME DATA is available.
• DTC is stored in PCM memory.
• Knock sensor malfunction
POSSIBLE • Connector or terminal malfunction
CAUSE • Short to power circuit in wiring between knock sensor terminal A and PCM terminal 2S
• Short to power circuit in wiring between knock sensor terminal B and PCM terminal 2P
F–128
ON-BOARD DIAGNOSTIC
INSPECTION
SELF-TEST.)
PROCEDURE.)
Yes Repair or replace suspected harness, then go to Step 8.
No Go to net step.
Yes Repair terminal, then go to Step 8.
No Go to net step.
Yes Replace PCM, then go to net step.
(See F–43 PCM REMOVAL/INSTALLATION.)
No Go to net step.
Yes Go to applicable DTC troubleshooting.
(See F–67 DTC TABLE.)
No Troubleshooting completed.
ACTION
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