TB23 - Transmission Control Indicator Light Always On

- Key "ON", engine "OFF".

- Cycle the Transmission Control Switch (TCS).

- Does the Transmission Control Indicator Lamp (TCIL) turn on and "OFF"?

Yes -- Concern may be intermittent. Check pin fit, wire crimps, pushed out pins.

No -- Go to TB24. TB24 - Transmission Control Switch Module Short Circuit Check