Sensor Testing
- Partly raise sealing gasket on air flow sensor side of harness connector. Connect an ohmmeter between Black wire and ground. Ohmmeter reading should be 0 ohms. Check voltage across sensor wires and ground as indicated in table.
TESTING AIR FLOW SENSOR
| Wire Color |
Condition |
Volts |
| Red |
Ignition On |
10-14 |
| Green |
Ignition On |
0.2-0.6 |
| Green |
Engine Running |
1.0-2.0 |
- If readings in Red and Black wires are incorrect, check air flow sensor circuit and repair as necessary. If readings in Red and Black wires are correct, but voltage in Green wire is incorrect, replace air flow sensor.