Operation CHARM: Car repair manuals for everyone.

Air Flow Meter/Sensor: Service and Repair




Air Cleaner, Mass Air Flow Sensor, Positive Crankcase Ventilation Heating Element


Removing and Installing









1 - Air Cleaner upper section

2 - Filter element

3 - Air cleaner lower section

4 - O-ring
- replace if damaged

5 - EVAP canister purge regulator valve 1 (N80)

6 - Retaining ring
- For N 80

7 - Harness connector
- 4 pin
- For Mass Air Flow sensor (G70)
- Check Oxygen sensor,heater Voltage supply

8 - Mass Air Flow (G70)*

9 - Intake hose

10 - Elbow

11 - Hose
- For Idle Air Control
- From silencer

12 - Positive Crankcase Ventilation (PCV) heating element (N79)
- For crankcase breather
- Arrow on heater element shows air flow direction
- Resistance at ambient temperature (approx. 25 °C)
Specification: 7...12 ohm

13 - Harness Connector
- 2 pin
- For PCV healing element (N79)
- Check Oxygen sensor heater Voltage between terminals 1 and 2 with ignition switched on must be approx. battery Voltage.

14 - PCV breather valve

15 - To intake manifold upper section

16 - Rubber washer

17 - Retaining ring