Tachometer Check

Attach an external high quality tachometer to the engine speed detection connector on the harness side (such as with a paper clip).
NOTE: For tachometer check, use an external high quality inductive tachometer.

Compare the readings of the vehicle tachometer and the external tachometer at every engine speed, and check if the variations are within the standard values.

Standard values:

< A/T >

ENGINE SPEED REFERENCE

ENGINE SPEED (r/min)	INDICATION ALLOWANCE OF TACHOMETER (r/min)
700	+/-100
3000	+/-150
5000	+/-250
6250	+/-150

Fig 1: Attaching External High Quality Tachometer To Engine Speed Detection Connector

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

< M/T >

ENGINE SPEED REFERENCE

ENGINE SPEED (r/min)	INDICATION ALLOWANCE OF TACHOMETER (r/min)
700	+/-100
3000	+/-150
5000	+/-250
6000	+/-300