| CHECK HARNESS BETWEEN ECM AND FRONT OXYGEN (A/F) SENSOR CONNECTOR. |
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1) Disconnect the connector from front oxygen (A/F) sensor. 2) Turn the ignition switch to ON. 3) Measure the voltage of harness between ECM connector and chassis ground. Connector & terminal (B135) No. 8 (+) — Chassis ground (−): (B135) No. 9 (+) — Chassis ground (−): |