Tachometer: Testing and Inspection

NOTE: This article contains changes called out by TSB# PG008-05.





INSPECT TACHOMETER/ON-VEHICLE
a. Connect a tune-up test tachometer, and start the engine.

NOTICE:
- Reversing the connection of the tachometer will damage the transistors and diodes inside.
- When removing or installing the tachometer, be careful not to drop or subject it to heavy shocks.

b. Compare the tester and tachometer indications.
DC 13.5 V 25 °C at (77°F)








INSPECT TACHOMETER RESISTANCE
Measure the resistance between terminals with fixing pointer to the stopper.
If resistance value is not as specified, replace the meter.