OUTPUT SIGNAL FROM ECM.

1) Turn the ignition switch to OFF.

2) Connect the connector to ECM and EGR solenoid valve.

3) Turn the ignition switch to ON.

4) Measure the voltage between ECM and chassis ground.

Connector & terminal

(B134) No. 12 (+) — Chassis ground (−):

(B134) No. 13 (+) — Chassis ground (−):

(B134) No. 14 (+) — Chassis ground (−):

(B134) No. 15 (+) — Chassis ground (−):

QUESTION

Is the voltage 0 — 10 V?

Yes No

Repair the poor contact portion of ECM connector.