MR2 Spyder L4-1.8L (1ZZ-FE) (2001)
Tachometer: Testing and Inspection
INSPECT TACHOMETER ON-VEHICLE
a. Connect a tune-up test tachometer, and start the engine.
NOTE: Reversing the connection of the tachometer will damage the transistors and diodes inside.
b. Compare the tester indications with tachometer indications.
RPM (DC 13.5 V, 25 °C (77 °F))
If error is excessive, replace the combination meter.
INSPECT TACHOMETER RESISTANCE
Measure the resistance between terminals with an ohmmeter at the positions shown in the illustration.
If resistance value is not as specified, replace the combination meter.