CHECK POWER SUPPLY OF MASS AIR FLOW AND INTAKE AIR TEMPERATURE SENSOR.

1) Turn the ignition switch to OFF.

2) Disconnect the connector from the mass air flow and intake air temperature sensor.

3) Turn the ignition switch to ON.

4) Measure the voltage between mass air flow and intake air temperature sensor connector and engine ground.

Connector & terminal

(B3) No. 3 (+) — Engine ground (−):

QUESTION

Is the voltage 10 V or more?

Yes No

Repair the harness and connector.

NOTE:

In this case, repair the following item:

• Open circuit of harness between the main relay and the mass air flow and intake air temperature sensor connector.

• Poor contact of main relay connector