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

1) Connect all connectors.

2) Turn the ignition switch to OFF.

3) Measure the voltage between ECM connector and chassis ground.

Connector & terminal

(B134) No. 53 (+) — Chassis ground (−):

QUESTION
Is the voltage 5 V or more?
Yes	No
Repair the short circuit of harness to power supply between ECM connector and the mass air flow and intake air temperature sensor connector.	Replace the mass air flow and intake air temperature sensor.