Transmission Control System

Name
Code No. 23 - Ignition signal system

Description
If ignition pulses are not input to the TCM while the engine is idling, there is an open circuit in the ignition signal line and diagnostic trouble code No. 23 is output.

Probable cause
- Malfunction of ignition coil
- Malfunction of power transistor
- Malfunction of connector
- Malfunction of TCM





Diagnosis