Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc p0332 knock/combustion vibration sensor 2 circuit low bank 2

Subaru Legacy BN/BS (2015-2019) Service Manual / Engine (diagnostics)(h6do) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc p0332 knock/combustion vibration sensor 2 circuit low bank 2

DTC DETECTING CONDITION:

Immediately at fault recognition

TROUBLE SYMPTOM:

• Driving performance problem

• Knocking is occurred.

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

STEP	CHECK	YES	NO
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. 16 — (E158) No. 34:	Is the resistance less than 500 k--	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0332 KNOCK/COMBUSTION VIBRATION SENSOR 2 CIRCUIT LOW BANK 2	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0332 KNOCK/COMBUSTION VIBRATION SENSOR 2 CIRCUIT LOW BANK 2
2.CHECK KNOCK SENSOR. 1) Disconnect the connector from the knock sensor. 2) Measure the resistance between knock sensor connectors. Terminals No. 1 — No. 2:	Is the resistance less than 500 k--	Replace the knock sensor. Knock Sensor	Repair the short circuit to ground in harness between ECM connector and knock sensor connector. NOTE: The harness between both connectors are shielded. Remove the shield and repair the short circuit of harness.
3.CHECK INPUT SIGNAL OF ECM. 1) Connect the connector to ECM. 2) Turn the ignition switch to ON. 3) Measure the voltage between ECM connector and chassis ground. Connector & terminal (E183) No. 16 (+) — Chassis ground (−):	Is the voltage 2 V or more-	Even if DTC is detected, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again. NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.	Repair the short circuit to ground in harness between ECM connector and knock sensor connector. NOTE: The harness between both connectors are shielded. Remove the shield and repair the short circuit of harness.

1. OUTLINE OF DIAGNOSIS

NOTE:

For the detection standard, refer to DTC P0327. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0327 KNOCK/COMBUSTION VIBRATION SENSOR 1 CIRCUIT LOW BANK 1 OR SINGLE SENSOR

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