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DTC P0328 [L3 Turbo]

id0102b7806800

DTC P0328 | Knock sensor circuit high input
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DETECTION CONDITION | • PCM monitors the input signal from the knock sensor when the engine is running. If the input voltage at the PCM terminals between 2P and 2S is below 4.9 V, the PCM determines that the knock sensor circuit has a malfunction. Diagnostic support note • This is a continuous monitor (CCM). • MIL illuminates if the PCM detects the above malfunction condition during first drive cycle. • FREEZE FRAME DATA is available. • DTCs are stored in the PCM memory.
POSSIBLE CAUSE | • Knock sensor malfunction • Connector or terminal malfunction • Short to the power supply in the wiring harness between knock sensor terminal A and PCM terminal 2S • Short to the power supply in the wiring harness between knock sensor terminal B and PCM terminal 2P • PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY FREEZE FRAME DATA AND DIAGNOSTIC MONITORING TEST RESULTS 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 REPAIR 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 KNOCK SENSOR CONNECTOR TERMINAL FOR POOR CONNECTION • Turn the ignition switch off. • Disconnect the knock sensor connector. • Inspect for poor connection at terminals A and B (such as damaged, pulled-out pins, corrosion). • Is there any malfunction? | Yes | Repair terminal, then go to step 7.
No | Go to the next step.
4 | INSPECT KNOCK SENSOR • Perform the knock sensor inspection. (See KNOCK SENSOR (KS) INSPECTION [L3 Turbo].) • Is the knock sensor normal? | Yes | Go to the next step.
No | Replace the knock sensor, then go to step 7.
5 | INSPECT KNOCK SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY • Turn ignition switch to the ON position (Engine off). • Measure the voltage between knock sensor terminal A (harness-side) and body ground and knock sensor terminal B (harness-side) and body ground. • Is there any voltage? | Yes | Repair or replace the wiring harness for a short to the power supply, then go to step 7.
No | Go to the next step.
6 | INSPECT PCM CONNECTOR FOR POOR CONNECTION • Disconnect the 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. • Turn ignition switch to the ON position (Engine off). • Clear the DTC from the PCM memory using the WDS or equivalent. • Start the engine and warm it up completely. • Is same DTC present? | Yes | Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [L3 Turbo].)
No | Go to the next step.
8 | VERIFY AFTER REPAIR PROCEDURE • Perform the "After Repair Procedure". (See AFTER REPAIR PROCEDURE [L3 Turbo].) • Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [L3 Turbo].)
No | Troubleshooting completed.