DTC P0328 Knock/Combustion Vibration Sensor 1 Circuit High Bank 1 Or Single Sensor: Notes

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Poor driving performance
Knocking occurs

CAUTION:

After servicing or replacing faulty parts, perform Clear Memory Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Clear Memory Mode . and Inspection Mode Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Inspection Mode .
Use the check board when measuring the ECM terminal voltage and resistance.

Wiring diagram:

Engine Electrical System Ref. to WIRING SYSTEM>Engine Electrical System>WIRING DIAGRAM .

Fig 1: Knock/Combustion Vibration Sensor 1 Circuit High Bank 1 Or Single Sensor - Wiring Diagram

G10409985

Courtesy of SUBARU OF AMERICA, INC.

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. 14 - (E159) No. 27:
Is the resistance 600 kΩ or more?
- Yes: Go to 2.
- No: Repair the poor contact of ECM connector.
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 kΩ or more?
- Yes: Replace the knock sensor. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>Knock Sensor .
- No: Repair the open circuit in harness between ECM and knock sensor connector.