| CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL RELAY. |
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1) Turn the ignition switch to OFF. 2) Measure the resistance between electronic throttle control relay connector and chassis ground. Connector & terminal (B309) No. 3 — Engine ground: (B309) No. 4 — Engine ground: |
| QUESTION | |
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Is the resistance 1 MΩ or more? | |
| Yes | No |
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Repair the ground short circuit of harness between ECM and electronic throttle control relay. |
