DTC P0328 [L3]

BME010200300W04

DTC P0328

Knock sensor circuit high input

DETECTION CONDITION

• PCM monitors input signal from knock sensor when engine is running. If input voltage at PCM terminals between 2P and 2S is excessively high, PCM determines that knock sensor circuit has malfunction.
Diagnostic support note
• This is a continuous monitor (CCM).
• 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.

POSSIBLE CAUSE

• Knock sensor malfunction
• Connector or terminal malfunction
• 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

Diagnostic procedure

STEP

INSPECTION

ACTION

1
PERFORM DTC CONFIRMATION PROCEDURE
• Perform DTC CONFIRMATION PROCEDURE.
• Is same DTC present?
Yes
Go to next step.
No
Intermittent concern exists. Go to INTERMITTENT CONCERN TROUBLESHOOTING procedure.
2
INSPECT KNOCK SENSOR CONNECTOR TERMINAL
• Turn ignition key to OFF.
• Disconnect knock sensor connector.
• Inspect for poor connection at terminals A and B (damaged, pulled-out pins, corrosion, etc.).
• Is there any malfunction?
Yes
Repair terminal, then go to step 6.
No
Go to next step.
3
INSPECT KNOCK SENSOR
• Perform knock sensor inspection.
• Is knock sensor okay?
Yes
Go to next step.
No
Replace knock sensor, then go to step 6.
4
INSPECT KNOCK SIGNAL CIRCUIT FOR SHORT TO POWER
• Turn ignition key to ON (Engine OFF).
• Measure voltage between knock sensor terminal A (harness-side) and body GND and knock sensor terminal B (harness-side) and body GND.
• Is there any voltage reading?
Yes
Repair or replace harness for short to power, then go to step 6.
No
Go to next step.
5
INSPECT PCM CONNECTOR
• Disconnect PCM connector.
• Inspect for poor connection (damaged, pulled-out terminals, corrosion, etc.).
• Is there any malfunction?
Yes
Repair or replace terminal, then go to step 6.
No
Go to next step.
6
VERIFY TROUBLESHOOTING OF DTC P0328 COMPLETED
• Make sure to connect all disconnected connectors.
• Clear DTC from PCM memory using WDS or equivalent.
• Perform KOEO/KOER self-test.
• Is same DTC present?
Yes
Replace PCM, then go to next step.
No
Go to next step.
7
VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
• Is there any DTC present?
Yes
Go to applicable DTC troubleshooting.
No
Troubleshooting completed.