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Subaru Legacy Service Manual: Dtc p0328 knock/combustion vibration sensor 1 circuit high bank 1 or single sensor

Subaru Legacy Service Manual / Engine (diagnostics)(h6do) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc p0328 knock/combustion vibration sensor 1 circuit high bank 1 or single sensor

DTC DETECTING CONDITION:

Immediately at fault recognition

TROUBLE SYMPTOM:

Poor driving performance

Knocking occurs

CAUTION:

After servicing or replacing faulty parts, perform Clear Memory Mode Clear Memory Mode > OPERATION, and Inspection Mode Inspection Mode > PROCEDURE.

WIRING DIAGRAM:

Engine Electrical System ENGINE TYPE EZ (WITHOUT PUSH BUTTON START) Engine Electrical System > WIRING DIAGRAM

Engine Electrical System ENGINE TYPE EZ (WITH PUSH BUTTON START) Engine Electrical System > WIRING DIAGRAM

STEPCHECKYESNO

1.CHECK HARNESS BETWEEN ECM AND KNOCK SENSOR CONNECTOR.

1) Turn the ignition switch to OFF.

2) Disconnect the connector from ECM.

3) Measure the resistance between ECM connectors.

Connector & terminal

(E158) No. 30 — (E158) No. 34:

Is the resistance 600 k- or more-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0328 KNOCK/COMBUSTION VIBRATION SENSOR 1 CIRCUIT HIGH BANK 1 OR SINGLE SENSOR

Repair the poor contact of ECM connector.

2.CHECK KNOCK SENSOR.

1) Disconnect the connector from the knock sensor.

2) Measure the resistance between knock sensor terminals.

Terminals

No. 1 — No. 2:

Is the resistance 600 k- or more-

Replace the knock sensor. Knock Sensor

Repair the harness and connector.

NOTE:

In this case, repair the following item:

Open circuit in harness between ECM connector and knock sensor connector

Poor contact of knock sensor connector

Poor contact of coupling connector

1. OUTLINE OF DIAGNOSIS

Detect the open or short circuit of knock sensor.

Judge as NG if out of specification.

2. COMPONENT DESCRIPTION

(A)

To knock sensor harness

(1)

Case

(3)

Piezoelectric element

(5)

Resistance

(2)

Weight

(4)

Nut

3. EXECUTION CONDITION

Secondary Parameters

Execution condition

None

4. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

5. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment Value

Malfunction Criteria

Threshold Value

Output voltage

≥ 4.591 V

Time Needed for Diagnosis: 1000 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

Dtc p0332 knock/combustion vibration sensor 2 circuit low bank 2
DTC DETECTING CONDITION:Immediately at fault recognitionTROUBLE SYMPTOM:• Driving performance problem• Knocking is occurred.CAUTION:After servicing or replacing faulty parts, perform Clear ...

Dtc p0327 knock/combustion vibration sensor 1 circuit low bank 1 or single sensor
DTC DETECTING CONDITION:Immediately at fault recognitionTROUBLE SYMPTOM:• Poor driving performance• Knocking occursCAUTION:After servicing or replacing faulty parts, perform Clear Memory M ...

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