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 Temperature Sensor/Switch: Testing and Inspection

INSPECTION
1. Access TFT PID.




2. Monitor the TFT PID voltage as the engine warms to normal operating temperature.




3. If TFT PID does not increase as engine reaches normal operating temperature replace TFT sensor.