SPN 709/FMI 3
Red Stop Lamp (RSL) – indicates a short to power/open circuit on pin 16 of the CPC #3 connector. For wiring schematic information refer to OEM literature.
Note: The CPC digital outputs have the same SPN as some MCM faults. DDDL 7.0 makes the distinction between the MCM and CPC when diagnosing a fault.