CHECK HARNESS BETWEEN ECM AND MANIFOLD ABSOLUTE PRESSURE SENSOR CONNECTOR.

Measure the resistance of harness between manifold absolute pressure sensor connector and engine ground.

Connector & terminal

(E21) No. 1 — Engine ground:

QUESTION

Is the resistance 1 MΩ or more?

Yes No

Repair ground short circuit of harness between ECM and manifold absolute pressure sensor connector.