1) Connect the connector to ECM.
2) Measure the resistance between electronic throttle control connector and engine ground.
Connector & terminal
(E57) No. 3 — Engine ground:
Is the resistance less than 5 Ω?
Repair the harness and connector.
NOTE:
In this case, repair the following item:
• Open circuit of harness between ECM and engine ground
• Poor contact in ECM connector
• Poor contact of coupling connector