LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Dodge and Ram
>>
2009
>>
Nitro R/T, 4WD
>>
Repair and Diagnosis
>>
Transmission
>>
Automatic Trans
>>
Transmission Control Module (TCM) - Electrical Diagnostics
>>
DTC Troubleshooting
>>
P1644-Incorrect Variant/Configuration
>>
Circuit Schematic
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Circuit Schematic
Fig 1: Transmission Control Module Power Supply Circuit Schematic
Courtesy of CHRYSLER LLC
Courtesy of CHRYSLER LLC