Optima V6-2.7L VIN 8 (2006)
Tachometer: Testing and Inspection
1. Connect the scan tool to the diagnostic link connector. or install a tachometer.
2. With the engine started, compare the readings of the tester with that of the tachometer. Replace the tachometer if the standard values in the service
specifications is exceeded.
CAUTION: When removing or installing the tachometer, be careful not to drop it or subject it to severe shock.