RAM 3500 HD Truck 4WD L6-6.7L DSL Turbo VIN A (2007)
AISIN AS68RC TRANSMISSION
The Transmission Control Module (TCM) controls all electronic operations of the transmission. The TCM receives information regarding vehicle
operation from both direct and indirect inputs, and selects the operational mode of the transmission. Direct inputs are hard wired to, and used specifically
by the TCM. Indirect inputs are shared with the TCM via the vehicle communication bus.
Some examples of direct inputs to the TCM are:
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Battery (B+) voltage
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Ignition "ON" voltage
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Transmission Range Sensor
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Pressure Switches
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Transmission Temperature Sensor
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Input Speed Sensor
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Output Speed Sensor
Some examples of indirect inputs to the TCM are:
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Engine/Body Identification