Tacoma 2WD V6-4.0L (1GR-FE) (2006)
Tachometer: Testing and Inspection
Component Inspection
INSPECT TACHOMETER
a. Check the operation.
1. Connect the tune-up test tachometer and start the engine.
NOTE:
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Reversing the connection of the tachometer will damage the transistors and the insides of the diodes.
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When removing or installing the tachometer, be careful not to drop or strike it.
2. Compare the result of the test with the standard indication.
DC 13.5 V, at 25 degrees C (77 degrees F).