DTC P0328[LF ATX (FN4A-EL), L3 ATX]

id0102b6806800

DTC P0328

KS circuit high input
DETECTION CONDITION
•  The PCM monitors the input signal from the KS when the engine is running. If the input voltage between PCM terminals for the KS circuit is above 4.9 Vthe PCM determines that KS circuit has a malfunction.
Diagnostic support note
•  This is a continuous monitor (CCM).
•  The MIL illuminates if the PCM detects the above malfunction conditions during the first drive cycle.
•  FREEZE FRAME DATA is available.
•  The DTC is stored in the PCM memory.
POSSIBLE CAUSE
•  KS malfunction
•  Connector or terminal malfunction
•  Short to power supply in wiring harness between KS terminal A and PCM terminal 2Q
•  Short to power supply in wiring harness between KS terminal B and PCM terminal 2R
•  PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
•  Has FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service Information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
INSPECT KS CONNECTOR TERMINAL
•  Turn the ignition switch off.
•  Disconnect KS connector.
•  Inspect for poor connection at terminals A and B (such as damaged/pulled-out pins, corrosion).
•  Is there any malfunction?
Yes
Repair the terminal, then go to Step 7.
No
Go to the next step.
4
INSPECT KS
•  Perform KS inspection.
•  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 and body ground and KS terminal B and body ground?
•  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 M-MDS.
•  Start the engine.
•  Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION[LF, L3].)
No
Go to the next step.
8
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “AFTER REPAIR PROCEDURE”.
•  Are any DTCs present?
Yes
Go to the applicable DTC troubleshooting.
(See DTC TABLE[LF ATX (FN4A-EL), L3 ATX].)
No
Troubleshooting completed.