CHECK HARNESS BETWEEN ECM AND MASS AIR FLOW AND INTAKE AIR TEMPERATURE SENSOR CONNECTOR.

1) Turn the ignition switch to OFF.

2) Measure the resistance of harness between mass air flow and intake air temperature sensor connector and engine ground.

Connector & terminal

(B3) No. 4 — Engine ground:

QUESTION

Is the resistance less than 5 Ω?

Yes No

Repair the harness and connector.

NOTE:

In this case, repair the following item:

Open circuit in harness between ECM connector and the mass air flow and intake air temperature sensor connector

Poor contact of ECM connector