FMI 7 CAT Fault Code

High Aftercooler Temperature Derate

Cause :

The battery supplies electricity to the TCM even when the ignition switch is off. This power allows the TCM to store data such as DTC history and freeze frame data.Engine started, engine running, and the PCM detected a high voltage present at the PCM for 3 minutes after the engine started. The Starter Relay Control Circuit High Voltage test monitors the voltage signal that is sent from the ignition switch.

FMI-1085
FMI-2097
FMI-609
FMI-706
FMI-446
FMI-702
FMI-239
FMI-2005
FMI-493
FMI-2025

Don't forget ! When a fault code pops up, CAT's Uptime Center is automatically notified via an cellular link, and it alerts the truck's owner by prearranged methods, usually email or phone calls.

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