a) Connect the terminal and body of the solenoid valve to the corresponding terminals of the battery.
b) When the contacts close and open, a characteristic click should be heard.
If there is no click, replace the valve.

2. Check the tachometer sensor.
Measure the resistance at the connector terminals with an ohmmeter.
[The original is published on the website: toyotaman]
- Resistance - 600-800 Ohm

If the resistance does not meet the specifications, replace the sensor.
