For 1990-2009 cars only
- Measure the resistance of each input speed sensor between terminals.
- If the resistance value is not between the minimum and maximum resistance plot lines, then measure the sensor resistance at 20°C (68°F).
- If both resistance measurements are not between the minimum and maximum resistance plot lines, then replace the input speed sensor.
Important: The resistance of the sensor can become infinity ohm when the resistance measurement is made at high temperatures.
