Automatic transmission control module (TCM) Dodge Caravan
Functions:
* Controls the automatic transmission hydraulic system
* Shifts gears
* Protects automatic transmission from overloads and overheating
* Diagnoses and reports automatic transmission faults
Location:
* Usually located next to the automatic transmission
*There may be some variations depending on model and year of manufacture
Dodge Caravan TCM Types:
* 46RE: 4-speed automatic transmission
* 47RE: 4-speed electronically controlled automatic transmission
* 62TE: 6-speed automatic transmission
* 68RFE: 6-speed automatic transmission with sport mode
Common Dodge Caravan TCM problems:
*Missing or rough gear shifting
* Engine speed too high or too low
* Delay when shifting gears
* Clutch problems
* Check Engine errors indicating problems with the automatic transmission
TCM fault diagnosis:
* Scan trouble codes (DTC) using OBD-II scanner
*Checking the physical connection of the TCM to the automatic transmission and wiring harnesses
* Voltage and ground measurement on TCM
* Checking the condition of the automatic transmission fluid
TCM replacement:
*Reprogramming required to pair with automatic transmission and electronic engine control unit (ECU)
*Special tools may be required for removal and installation
* It is recommended to have the replacement done by a professional mechanic
TCM replacement cost:
*TCM cost varies depending on model and complexity level.
* Replacement costs including parts and labor can range from $500 to $2,000.