Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Sensor Inspection

1. Disconnect the volume air flow sensor connectors.





2. Measure resistance between terminals 5 and 6.

Temperature [°C (°F)] Resistance (K ohms)
0 (32) 6.0
20 (68) 2.7
80 (176) 0.4





3. Measure resistance while heating the sensor using a hair drier.

Temperature [°C (°F)] Resistance (K ohms)
Higher Smaller

4. If resistance does not decrease as heat increase or the resistance remains unchanged, replace the volume air flow sensor assembly.