| CHECK HARNESS BETWEEN ECM AND MASS AIR FLOW SENSOR CONNECTOR. |
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1) Turn the ignition switch to OFF. 2) Disconnect the connector from mass airflow sensor. 3) Turn the ignition switch to ON. 4) Measure the voltage between mass air flow sensor connector and chassis ground. Connector & terminal (B3) No. 3 (+) — Chassis ground (−): |
| QUESTION | |
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Is the voltage 5 V or more? | |
| Yes | No |
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Repair the short to power supply in the harness between the mass air flow sensor connector and ECM connector. |
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