ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC P0327 KNOCK SENSOR 1 CIRCUIT LOW (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 , and Inspection Mode .

WIRING DIAGRAM:

• Euro 4 model

• Euro 5 model

STEPCHECKYESNO

1.CHECK HARNESS BETWEEN ECM AND KNOCK SENSOR CONNECTOR.

1) Turn the ignition switch to OFF.

2) Disconnect the connectors from ECM.

3) Measure the resistance between ECM connectors.

Connector & terminal

Euro 4 model

(B137) No. 17 — (B137) No. 31:

Euro 5 model

(B134) No. 9 — (B134) No. 29:

Is the resistance 600 kΩ or more?

Repair the poor contact of ECM connector.

2.CHECK KNOCK SENSOR.

1) Disconnect the connector from knock sensor.

2) Measure the resistance between knock sensor terminals.

Terminals

No. 1 — No. 2:

Is the resistance 600 kΩ or more?

Replace the knock sensor.

Repair the harness and connector.

NOTE:

In this case, repair the following item:

• Open circuit in harness between ECM and knock sensor connector

• Poor contact of knock sensor connector

• Poor contact of coupling connector