VAF3 - VREF at VAF Sensor

- Key OFF.

- Disconnect the VAF sensor connector.

- Key ON.

- Measure the voltage between VAF sensor VREF wire and VAF sensor SIGRTN wire.

- Is the voltage between 4.5-5.5 volts?

Yes -- Replace the VAF sensor.

No -- Go to EEC Pinpoint Test VREF. VREF - Reference Voltage