Sequoia LTD 4WD V8-4.7L (2UZ-FE) (2001)
Tachometer: Testing and Inspection
INSPECT TACHOMETER
a. Connect a tune-up test tachometer, and start the engine.
NOTE:
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Reversing the connection of the tachometer will damage the transistors and diodes inside.
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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 20°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.