Operation CHARM: Car repair manuals for everyone.

Test F: The Tachometer Is Inoperative

PINPOINT TEST F: THE TACHOMETER IS INOPERATIVE


F1-F2:






F3-F4:






Normal Operation
Engine rpm data is provided to the instrument cluster by the powertrain control module (PCM) over the communication network.

Possible Causes
- PCM
- Instrument cluster