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Detroit DD15 GHG14 (2014-16) Fault Code: SPN 602 FMI 19 (CPC) J1939 Cruise Control Acceleration Switch Signal from Source #1, #2, or #3 is Erratic

NOTE: Please see the step by step troubleshooting procedures for this specific code.

1. If any codes related to battery voltage are present, fix those first.
2. If 625-9 present, troubleshoot that instead.
3. If any engine modules have been programmed recently, check configuration.
4. Another computer module on the truck (ABS, transmission, cab, etc…) has a failure that is causing this.