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

1) Turn the ignition switch to OFF.

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

3) Measure the resistance of harness between ECM and the mass air flow and intake air temperature sensor connector.

Connector & terminal

Euro 4 model

(B136) No. 9 — (B3) No. 4:
(B137) No. 31 — (B3) No. 5:

Euro 5 model

(B136) No. 9 — (B3) No. 4:
(B135) No. 22 — (B3) No. 5:

QUESTION

Is the resistance less than 1 Ω?

Yes No

Repair the harness and connector.

NOTE:

In this case, repair the following item:

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

• Poor contact of joint connector