CHECK HARNESS BETWEEN ECM AND KNOCK SENSOR.

1) Turn the ignition switch to OFF.

2) Disconnect the connectors from the ECM.

3) Measure the resistance between ECM connectors.

Connector & terminal

(B134) No. 15 — (B134) No. 29:

QUESTION

Is the resistance 600 kΩ or more?

Yes No

Repair the poor contact of the ECM connector.