Airflow Meter
- Check for leaks or damage in connection between intake boot and airflow meter. Repair any defect found. Remove connectors from airflow meter, air intake boot, and airflow meter for air cleaner case.
- Check exterior of airflow meter for damage. Check for foreign matter, water, oil in air passages, especially in by-pass. If any foreign matter is found, replace airflow sensor.NOTE: Be careful not to short circuit power source.
- Turn ignition off. Install airflow meter on air cleaner. Disconnect a connector from airflow meter and remove rubber cover from connector. Using a DVOM, measure resistance between airflow meter body and ground terminal (B). See Fig 1 .
- Resistance reading should be 10 ohms (maximum). If resistance is greater than 10 ohms, check harness and internal circuits of control unit. Turn ignition on (engine off). Measure voltage across power terminal (R) and body.
- Voltage reading should be 10 volts (minimum). If voltage is not as specified, check power supply (battery, fuses, control unit, harness connector, etc.).
- Reconnect airflow meter connector. Attach positive (+) DVOM lead to signal terminal (W) and negative (-) lead to ground terminal (B). Measure voltage across terminal (W) and (B).
- Voltage reading should be .1-.5 volt. If not, replace airflow meter. If voltage is present, remove upper section of air cleaner. Blow air from air cleaner side to check if voltage across terminals (W) and (B) is greater than .1-.5 volt. If voltage reading is not greater than .1-.5, replace airflow meter.