[amidgeha]

TCM Power Input Signal Range/Performance

The Powertrain Control Module (PCM) and Transmission Control Module (TCM) monitored supplied voltage to the ATM solenoid valve. This voltage is without specific, then gear is fixed 4th speed.

Cause:
Transmission Control Module (TCM) Power and/or Ground connection
Faulty Transmission Control Module (TCM)
Transmission Control Module (TCM) harness is open or shorted
Transmission Control Module (TCM) circuit poor electrical connection

Symptoms:
Check engine light