SPN 3510/FMI 3 This diagnosis typically means the 5 V sensor supply bank 2 circuit failed high.‪ This fault indicates that the MCM detects a…

SPN 3509/FMI 4 This diagnosis typically means the 5 V sensor supply bank 1 circuit failed low.‪ This fault indicates that the MCM detects a…

SPN 3510/FMI 2 This fault indicates that the throttle pedal supply is receiving erratic data.‪ Check as follows:‪ Disconnect the Accelerator Pedal (AP). Turn the…

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…