Transmission Control System

Name
Code No. 21, 22 - Kickdown servo switch system

Description
If the kickdown servo switch does not turn ON in 1 and 3 range within 5 seconds, there is an open circuit in the kickdown servo switch and diagnostic trouble code No. 21 is output.

If the kickdown servo switch does not turn OFF in 2 and 4 range, there is a short circuit in the kickdown servo switch and diagnostic trouble code No. 22 is output.

Probable cause
- Malfunction of kickdown servo switch
- Malfunction of connector
- Malfunction of TCM





Diagnosis