Air Flow Sensor Check

Ohmmeter & Voltmeter Check
1. Remove upper air cleaner housing and filter.
2. Pull lower air cleaner housing and air flow sensor out of housing.
3. Disconnect air flow sensor wiring connector.
4. Remove relay XVI, then bridge terminals 30 and 87 with suitable jumper wire.
5. Using suitable voltmeter, measure voltage between terminals 4 and 2 of disconnected wire connector.
6. Connect suitable ohmmeter across terminals 3 and 6 of air flow sensor. Resistance should be 0 - 1000 ohms.
7. Connect ohmmeter across terminals 3 and 5 of air flow sensor. Resistance should be 3.6 - 4.1 ohms.

Hot Wire Sensor ``Free Burn'' Check
1. Install air flow sensor and lower air cleaner housing. Lubricate housing O-ring with silicone prior to installation.
2. Connect air flow meter wiring connector. Do not install upper air cleaner housing or filter at this time.
3. Start engine and allow to reach operating temperature, then run engine at approximately 2000 RPM. Turn ignition Off.
4. Using suitable mirror, observe hot wire. Hot wire should glow for 1 second after a time lapse of approximately 4 seconds after ignition is shut Off.