| CHECK HARNESS BETWEEN ECM AND DATA LINK CONNECTOR. |
|
Measure the resistance between data link connector and chassis ground. Connector & terminal (B40) No. 7 — Chassis ground: |
| QUESTION | |
|
Is the resistance 1 MΩ or more? | |
| Yes | No |
|
Repair the poor contact of the ECM or data link connector. |
Repair the ground short circuit of harness between ECM and data link connector. |