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

WARNING: This page is about a different variant/trim than selected.

Engine Electrical System ENGINE TYPE EJ (WITHOUT PUSH BUTTON START) Ref. to the appropriate SYSTEM WIRING diagram article. ENGINE TYPE EJ (WITHOUT PUSH BUTTON START).
Engine Electrical System ENGINE TYPE EJ (WITH PUSH BUTTON START) Ref. to the appropriate SYSTEM WIRING diagram article. ENGINE TYPE EJ (WITH PUSH BUTTON START).

Fig 1: Engine Electrical System - Wiring Diagram (Engine Type EJ)
Courtesy of SUBARU OF AMERICA, INC.

DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK HARNESS BETWEEN ECM AND KNOCK SENSOR CONNECTOR. Turn the ignition switch to OFF. Disconnect the connector from ECM. Measure the resistance between ECM connectors. Connector & terminal (B137) No. 2 - (B134) No. 29:	Is the resistance 600 kΩ or more?	Go to step 2.	Repair the poor contact of ECM connector.
2 CHECK KNOCK SENSOR. Disconnect the connector from the knock sensor. Measure the resistance between knock sensor terminals. Terminals No. 1 - No. 2:	Is the resistance 600 kΩ or more?	Replace the knock sensor. < Ref. to 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