CHECK HARNESS BETWEEN ECM AND MANIFOLD ABSOLUTE PRESSURE SENSOR CONNECTOR.

1) Turn the ignition switch to OFF.

2) 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 less than 5 Ω?

Yes No

Repair the harness and connector.

NOTE:

In this case, repair the following item:

Open circuit of harness between ECM and manifold absolute pressure sensor connector.

Poor contact in ECM connector

Poor contact of coupling connector