Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Transmission Range Switch P/A/B/C

Scan Tool Displays Hight or Low
The Trans Switch P/A/B/C display represents the state of the four inputs from the trans axle range switch. High display indicates battery voltage signal being monitored at the PCM. Low indicates a ground input signal at the PCM.The combination of transaxle range inputs indicates the position of the transaxle manual valve.