| CHECK POWER SUPPLY TO FRONT OXYGEN (A/F) SENSOR. |
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1) Turn the ignition switch to OFF. 2) Disconnect the connector from front oxygen (A/F) sensor. 3) Turn the ignition switch to ON. 4) Measure the voltage between front oxygen (A/F) sensor connector and engine ground. Connector & terminal (E23) No. 6 (+) — Engine ground (−): |
| QUESTION | |
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Is the voltage 10 V or more? | |
| Yes | No |
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Repair the power supply line. NOTE: In this case, repair the following item: • Open circuit of harness between main relay and front oxygen (A/F) sensor connector • Poor contact in front oxygen (A/F) sensor connector • Poor contact of main relay connector |
