Operation CHARM: Car repair manuals for everyone.

Tachometer Output

Tach Output Circuit:





Purpose:
Tachometer output is controlled by the PCM.

Operation:
The PCM receives the low resolution signal from the distributor on CKT 453. The PCM modifies this signal and sends it to the tachometer on CKT 121.

Location:
The tachometer is located in the instrument panel.