SPN 3510/FMI 4 The typical diagnosis for this fault is voltage low.‪ Check as follows:‪ Disconnect the Accelerator Pedal (AP) connector. Disconnect the #1 connector…

SPN 3510/FMI 3 The typical diagnosis for this fault is high voltage.‪ Check as follows:‪ Disconnect the Accelerator Pedal (AP). Turn the ignition ON (key…

SPN 3511/FMI 3 This diagnosis typically means the 3 V sensor supply bank 1 circuit failed high.‪ This fault indicates that the MCM detects a…

SPN 3512/FMI 3 This diagnosis typically means the 3 V sensor supply bank 1 circuit failed high.‪ This fault indicates that the MCM detects a…

SPN 3597/FMI 4 This diagnosis is typically Proportional Valve Bank 1 circuit failed low.‪ Check as follows:‪ Turn the ignition OFF. Disconnect the front valve…

SPN 3598/FMI 4 This fault indicates the Proportional Valve Bank 2 circuit has failed low.‪ Check as follows:‪ Turn the ignition OFF. Disconnect the Rear…

SPN 3603/FMI 9 This fault is typically the J1939 ESS message is missing.‪ Check as follows:‪ Check for multiple codes: If CPC SPN 168/FMI 0/14/18…

SPN 3659/FMI 14 SPN 3659/FMI 14 is typically an open circuit, short to ground or short to power.‪ Check as follows:‪ Check for multiple codes.…

SPN 3660/FMI 14 SPN 3660/FMI 14 is typically an open circuit, short to ground or short to power.‪ Check as follows:‪ Check for multiple codes.…

SPN 3661/FMI 14 SPN 3661/FMI 14 is typically an open circuit, short to ground or short to power.‪ Check as follows:‪ Check for multiple codes.…