793F CMD Off-Highway Truck/Tractor Braking System Caterpillar


Diagnostic Code List

Usage:

793F CMD RBT
The following table lists the diagnostic codes for the Brake ECM (MID 116). When a diagnostic code becomes active, refer to the Troubleshooting section of this manual for a specific troubleshooting procedure.

Table 1
Brake ECM Diagnostic Code List (MID 116) 
CID-FMI  Description 
CID 0041 - 8 VDC Supply 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, open circuit 
CID 0168 - Electrical System Voltage 
FMI 02  Data erratic, intermittent, or incorrect 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, open circuit 
CID 0190 - Engine Speed Sensor 
FMI 02  Data erratic, intermittent, or incorrect 
FMI 08  Abnormal frequency, pulse width, or period 
CID 0247 - SAE J1939 Data Link 
FMI 9  Abnormal Update Rate 
FMI 14  Special Instruction 
CID 0248 - Cat Data Link 
FMI 09  Abnormal Update Rate 
CID 0269 - Sensor Power Supply (10V) 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, open circuit 
CID 0291 - Engine Cooling Fan Solenoid 
FMI 03  Voltage above normal, shorted high 
FMI 05  Current below normal, open circuit 
FMI 06  Current above normal, grounded circuit 
CID 0296 - Transmission Control 
FMI 09  Abnormal Update Rate 
FMI 14  Special Instruction 
CID 0468 - Service Brake Pedal Position 
FMI 03  Voltage above normal 
FMI 04  Voltage below normal 
FMI 08  Abnormal frequency, pulse width, or period 
CID 0544 - Engine Cooling Fan Speed Sensor 
FMI 02  Data erratic, intermittent, or incorrect 
CID 0590 - Engine Control Module 
FMI 09  Abnormal update rate 
FMI 14  Special Instruction (Re-Flash Software) 
CID 605 - Wheel Speed Sensor #1 
FMI 02  Data erratic, intermittent, or incorrect 
CID 606 - Wheel Speed Sensor #2 
FMI 02  Data erratic, intermittent, or incorrect 
CID 0607 - Wheel Speed Sensor #3 (left wheel) 
FMI 02  Data erratic, intermittent, or incorrect 
CID 0608 - Wheel Speed Sensor #4 (right wheel) 
FMI 02  Data erratic, intermittent, or incorrect 
CID 0681 - Parking Brake Solenoid 
FMI 03  Voltage above normal, shorted high 
FMI 05  Current below normal, open circuit 
FMI 06  Current above normal, grounded circuit 
CID 0689 - Left Brake Solenoid 
FMI 03  Voltage above normal, shorted high 
FMI 05  Current below normal, open circuit 
FMI 06  Current above normal, grounded circuit 
CID 0690 - Right Brake Solenoid 
FMI 03  Voltage above normal, shorted high 
FMI 05  Current below normal, open circuit 
FMI 06  Current above normal, grounded circuit 
CID 0713 - Auto Retarder ON/OFF Switch 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, shorted low 
CID 0719 - TCS Proportional Solenoid 
FMI 03  Voltage above normal, shorted high 
FMI 05  Current below normal, open circuit 
FMI 06  Current above normal, grounded circuit 
CID 0766 - Differential (Axle) Lube Pressure Sensor 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, shorted low 
FMI 08  Abnormal frequency, pulse width, or period 
CID 0779 - Cab Air Temperature Sensor 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, open circuit 
CID 0796 - Differential (Axle) High Speed Fan Solenoid 
FMI 03  Voltage above normal, shorted high 
FMI 05  Current below normal, open circuit 
FMI 06  Current above normal, grounded circuit 
CID 0835 - Differential (Axle) Oil Temperature Sensor 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, bad connection 
FMI 08  Abnormal frequency, pulse width, or period 
CID 0852 - Brake Oil Temperature Sensor (Right Front) 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, bad connection 
FMI 08  Abnormal frequency, pulse width, or period 
CID 0853 - Brake Oil Temperature Sensor (Left Front) 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, bad connection 
FMI 08  Abnormal frequency, pulse width, or period 
CID 0854 - Brake Oil Temperature Sensor (Right Rear) 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, bad connection 
FMI 08  Abnormal frequency, pulse width, or period 
CID 0855 - Brake Oil Temperature Sensor (Left Rear) 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, bad connection 
FMI 08  Abnormal frequency, pulse width, or period 
CID 0967 - Machine Application 
FMI 09  Abnormal update rate 
CID 1089 - VIMS Analysis Control Module 
FMI 09  Abnormal update rate 
FMI 14  Special Instruction 
CID 1225 - Left Rear Parking Brake Oil Pressure Sensor 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, bad connection 
FMI 08  Abnormal frequency, pulse width, or period 
CID 1226 - Right Rear Parking Brake Oil Pressure Sensor 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, bad connection 
FMI 08  Abnormal frequency, pulse width, or period 
CID 1227 - Retarder Lever (Switch) 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, bad connection 
FMI 08  Abnormal frequency, pulse width, or period 
CID 1229 - Brake Cooling Pump Speed Sensor 
FMI 02  Data erratic, intermittent, or incorrect 
CID 1230 - Brake Cooling Pump Drive Solenoid 
FMI 03  Voltage above normal, shorted high 
FMI 05  Current below normal, open circuit 
FMI 06  Current above normal, grounded circuit 
CID 1232 - Final Drive Oil Bypass Solenoid 
FMI 03  Voltage above normal, shorted high 
FMI 05  Current below normal, open circuit 
FMI 06  Current above normal, grounded circuit 
CID 1273 - Chassis Control Module 
FMI 09  Abnormal update rate 
FMI 14  Special Instruction (Re-Flash Software) 
CID 1326 - ECM Location Code 
FMI 02  Data erratic, intermittent, or incorrect 
CID 1437 - Rear Axle Pump Drive Oil Divert Solenoid 
FMI 03  Voltage above normal, shorted high 
FMI 05  Current below normal, open circuit 
FMI 06  Abnormal frequency, pulse width, or period 
CID 1482 - 10 VDC Sensor Power Supply 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, bad connection 
CID 1603 - Machine Control Module 
FMI 09  Abnormal update rate 
FMI 14  Special Instruction (Re-Flash Software) 
CID 1607 - Front ARC Control Solenoid 
FMI 03  Voltage above normal, shorted high 
FMI 05  Current below normal, open circuit 
FMI 06  Current above normal, grounded circuit 
FMI 13  Out of Calibration 
CID 1608 - Rear ARC Control Solenoid 
FMI 03  Voltage above normal, shorted high 
FMI 05  Current below normal, open circuit 
FMI 06  Current above normal, grounded circuit 
FMI 13  Out of Calibration 
CID 1674 - Solenoid Return #1 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, open circuit 
FMI 05  Current below normal, open circuit 
CID 1893 - Inertial Measurement Sensor 
FMI 02  Data erratic, intermittent, or incorrect 
FMI 09  Abnormal Update Rate 
FMI 14  Special Instruction 
CID 1961 - Service Brake Accumulator Pressure Sensor 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, open circuit 
FMI 08  Abnormal frequency, pulse width, or period 
FMI 20  Data drifted high 
CID 1962 - Brake Pump Pressure Sensor 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, open circuit 
FMI 08  Abnormal frequency, pulse width, or period 
FMI 20  Data drifted high 
CID 1963 - Brake Pump Unloader Solenoid 
FMI 03  Voltage above normal, shorted high 
FMI 05  Current below normal, open circuit 
FMI 06  Current above normal, grounded circuit 
CID - 2448 - Graphical Display Module 
FMI 09  Abnormal update rate 
FMI 14  Special Instruction (Re-Flash Software) 
CID 2659 - Cab Air Temperature Control Switch 
FMI 02  Data erratic, intermittent, or incorrect 
CID 2661 - Cab Air Temperature Control 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, open circuit 
CID 2663 - Cab Ventilation Duct Temperature Sensor 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, open circuit 
CID 2671 - Air Conditioner Compressor Clutch Solenoid 
CID 2683 - Secondary Brake Pedal Position Sensor 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, open circuit 
FMI 08  Abnormal frequency, pulse width, or period 
CID 2813 - Secondary Brake Accumulator Pressure Sensor 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, open circuit 
FMI 08  Abnormal frequency, pulse width, or period 
FMI 20  Data drifted high 
CID 3440 - Front Service Brake Oil Pressure Sensor 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, open circuit 
FMI 08  Abnormal frequency, pulse width, or period 
CID 3442 - Rear Service Brake Oil Pressure Sensor 
FMI 03  Voltage above normal, shorted high 
FMI 04  Voltage below normal, open circuit 
FMI 08  Abnormal frequency, pulse width, or period 

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