| CHECK HARNESS BETWEEN ECM AND FRONT OXYGEN (A/F) SENSOR CONNECTOR. |
|
1) Turn the ignition switch to OFF. 2) Disconnect the connectors from the ECM and front oxygen (A/F) sensor. 3) Measure the resistance between ECM and chassis ground. Connector & terminal (B137) No. 23 — Chassis ground: (B137) No. 14 — Chassis ground: |
| QUESTION | |
|
Is the resistance 1 MΩ or more? | |
| Yes | No |
|
Replace the front oxygen (A/F) sensor. |
Repair the ground short circuit of harness between ECM and front oxygen (A/F) sensor connector. |
