Code 7 (Air Flow Sensor)

AIR FLOW SENSOR
Explanation
This fault is stored when shorts or breaks occur on the Volume Air Flow Sensor (VAF) or its leads (power supply or signal lead). Also recognition when Potentiometer Voltage (Up)/Supply Voltage (Uv) value of VAF is no longer in the normal operating range of 0.02 to 0.95 V.

NOTE: The Digital Motor Electronic (DME) control unit works with determined replacement values, Load Signal (tL)=3.5 ms (partial load) and 6.0 ms (full load) and ignition timing = 20 crankshaft degrees before TDC when this defect is detected.

Troubleshooting
- Check signal by means of status monitoring. Up/Uv value shows the relation between potentiometer voltage (slider) and power supply voltage (5 V) in air flow sensor.
- Proceed with displayed scan tool diagnostic instructions where applicable.