P0328

DTC P0327, P0328 KS




Component Description
The knock sensor is attached to the cylinder block. It senses engine knocking using a piezoelectric element. A knocking vibration from the cylinder block is sensed as vibrational pressure. This pressure is converted into a voltage signal and sent to the ECM.




On Board Diagnosis Logic

DTC Confirmation Procedure

NOTE: If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next step.

1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10 V at idle.

1. Start engine and run it for at least 5 seconds at idle speed.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to "Diagnostic Procedure" below.

EC-KS-01:

Wiring Diagram

Step 1-4:

Step 5-8:

Diagnostic Procedure

Component Inspection




KNOCK SENSOR
Check resistance between knock sensor terminal 1 and ground.

NOTE: It is necessary to use an ohmmeter which can measure more than 10 Mohms.

Resistance: Approximately 532 - 588 kohms [at 20 °C (68 °F)]

CAUTION: Do not use any knock sensors that have been dropped or physically damaged. Use only new ones.