Celica GT-S L4-1.8L (2ZZ-GE) (2000)
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 Volt, 25 °C (77 °F))
If error is excessive, replace the tachometer.
INSPECT TACHOMETER RESISTANCE
Measure the resistance between terminals with fixing pointer to the stopper.
If resistance value is not as specified, replace the meter.