Tachometer: Testing and Inspection

1. Connect the scan tool to the diagnostic link connector or install a tachometer.
2. With the engine running, compare the readings of the tester with that of the tachometer. Replace the tachometer if the tolerance is exceeded.

CAUTION
1. Reversing the connections of the tachometer will damage the transistor and diodes inside.
2. When removing or installing the tachometer be careful not to drop it or subject it to severe shock.