Repair procedures: Inspection: Tachometer
- Connect the scan tool to the diagnostic link connector or install a tachometer.
- With the engine started, compare the readings of the tester with that of the tachometer. Replace the tachometer if the tolerance is exceeded.CAUTION:
- Reversing the connections of the tachometer will damage the transistor and diodes inside.
- When removing or installing the tachometer, be careful not to drop it or subject it to severe shock.
Revolution (rpm) 1, 000 2, 000 3, 000 4, 000 Tolerance (rpm) ±100 ±125 ±150 ±150 Revolution (rpm) 5, 000 6, 000 7, 000 8, 000 Tolerance (rpm) ±150 ±180 ±210 ±230