CHECK HARNESS BETWEEN ECM AND FUEL INJECTOR CONNECTOR.

1) Turn the ignition switch to OFF.

2) Disconnect the connectors from the ECM and fuel injectors #3 and #4.

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

Connector & terminal

(B135) No. 25 — Chassis ground:

(B135) No. 26 — Chassis ground:

(B135) No. 1 — Chassis ground:

(B135) No. 3 — Chassis ground:

QUESTION

Is the resistance 1 MΩ or more?

Yes No

Repair the short circuit to ground in harness between ECM connector and fuel injector connector.