The Vehicle Interface Module or VIM is a self contained pre-wired control box that simplifies the connections between the Electronic Control Unit [ECU] and the vehicle electrical system.The operator experienced a high transmission temperature with no high idle and exhaust brake. The fault codes indicated a power interruption between the battery and ECU.The VIM {pictured above} showed signs of corrosion at the connector and inside the unit, the VIM must be replaced. Corrosion inside the VIM This unit is located along the frame above the front axle. Freightliner {Now the Thomas Bus dealer} knows about this problem and is making improvements. MD 3060 transmissions do not like any kind of moisture since the components are electronic.
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