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

Speed Control Slows Down By Itself

Test the vehicle speed sensor/output speed sensor. If sensor fails replace sensor, if it passes perform the following test:
1. Check for transmission DTC.
2. Perform the speed control switch test on the DECEL switch, if it fails replace switch.
3. If the switch passes, conduct the vacuum supply test.
4. If it passes, conduct the servo vacuum test. If it fails replace servo.
5. If continuity, replace the PCM.