CHECK HARNESS CONNECTOR BETWEEN EACH CONTROL MODULE AND DATA LINK CONNECTOR.

1) Turn the ignition switch to OFF.

2) Disconnect the TCM and ECM connector.

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

Connector & terminal

(B40) No. 7 — Chassis ground:

QUESTION

Is the resistance 1 MΩ or more?

Yes No

Check harness and connector between each control module and data link connector.