Supra Liftback L6-2997cc 3.0L DOHC MFI Twin-Turbo (1997)
Tachometer: Testing and Inspection
INSPECT TACHOMETER ON-VEHICLE
1. Connect a tune-up test tachometer, and start the engine.
NOTE: Reversing the connection of the tachometer will damage the transistors and diodes inside.
2. Compare the tester and tachometer indications.
RPM (DC 13.5 V, 25° C (77° F))
If error is excessive. replace the tachometer.