Tachometer Inspection

CAUTION:

If the engine speed exceeds the allowable range, the engine could be damaged. Therefore, when inspecting the tachometer, do not allow the engine speed to exceed the allowable range indicated on the tachometer.

Connect the M-MDS to the DLC-2.
After vehicle identification, select the following from the M-MDS initialization screen.
1. "DataLogger"
2. "Modules"
3. "IC"

Using "TACHOMTR", verify that the displayed information is as indicated in the table.

M-MDS DISPLAY	INSTRUMENT CLUSTER DISPLAY
3000 RPM	Tachometer needle moves to approx. 3, 050 rpm.
6000 RPM	Tachometer needle moves to approx. 6, 100 rpm.
Off	Tachometer needle moves to bottommost position.

If the tachometer does not operate or the indication is not within the allowable range, inspect the DTC inspection for the following control module and the related wiring harnesses.
- PCM
If the PCM and related wiring harnesses are normal, replace the instrument cluster.