| CHECK HARNESS BETWEEN ECM AND REAR OXYGEN SENSOR. |
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1) Turn the ignition switch to OFF. 2) Disconnect the connectors from the ECM. 3) Measure the resistance between ECM and rear oxygen sensor connector. Connector & terminal (B136) No. 4 — (E22) No. 1: |
| QUESTION | |
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Is the resistance less than 1 Ω? | |
| Yes | No |
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Repair the harness and connector. NOTE: In this case, repair the following item: • Open circuit in harness between ECM and rear oxygen sensor connector • Poor contact of coupling connector |
