AD55B Underground Articulated Truck Power Train Electronic Control System Caterpillar

Use the Caterpillar Monitoring System or use the Electronic Technician (ET) in order to determine the diagnostic codes for the Power Train/Chassis Electronic Control Module (ECM). After determining the diagnostic codes, refer to the corresponding test procedure for more information. Perform the procedure that corresponds to the diagnostic code (CID and FMI). The following table is a list of possible diagnostic codes for the Power Train/Chassis ECM.

Table 1

Diagnostic Codes For The ECM (1)
For troubleshooting, see the procedure with the same number for the CID and the FMI.
CID-FMI	Description
CID 0041 - 8 V Supply
FMI 03	Voltage above normal
FMI 04	Voltage below normal
CID 0070 - Brake Switch (Parking)
FMI 03	Voltage above normal
FMI 04	Voltage below normal
CID 0127 - Pressure Sensor (Transmission Oil)
FMI 03	Voltage above normal
FMI 04	Voltage below normal
CID 0144 - Alarm Relay (Backup)
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
CID 0168 - Electrical System Voltage
FMI 02	Incorrect signal
FMI 03	Voltage above normal
FMI 04	Voltage below normal
CID 0177 - Temperature Sensor (Transmission Oil)
FMI 03	Voltage above normal
FMI 04	Voltage below normal
FMI 08	Abnormal signal
CID 0190 - Speed Sensor (Engine)
FMI 02	Incorrect signal
FMI 08	Abnormal signal
CID 0298 - Pressure Switch (Service Brake Oil)
FMI 03	Voltage above normal
FMI 04	Voltage below normal
FMI 08	Abnormal signal
CID 0444 - Magnetic Switch (Start Relay)
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
CID 0457 - Temperature Sensor (Brake Oil)
FMI 03	Voltage above normal
FMI 04	Voltage below normal
FMI 08	Abnormal signal
CID 0562 - Caterpillar Monitoring System Control
FMI 02	Incorrect signal
FMI 09	Abnormal update
FMI 12	Bad device
CID 0585 - Speed Sensor (No. 1) (Transmission Output)
FMI 02	Incorrect signal
FMI 08	Abnormal signal
CID 0590 - Electronic Control Module (Engine)
FMI 02	Incorrect signal
FMI 09	Abnormal update
FMI 12	Bad device
CID 0627 - Pressure Switch (Parking Brake Oil)
FMI 03	Voltage above normal
FMI 04	Voltage below normal
CID 0669 - Speed Sensor (Torque Converter Output)
FMI 02	Incorrect signal
FMI 08	Abnormal signal
CID 0673 - Speed Sensor (No. 2) (Transmission Output)
FMI 02	Incorrect signal
FMI 08	Abnormal signal
CID 0681 - Solenoid Valve (Parking Brake) (No. 1)
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
CID 0702 - Position Sensor (Shift Lever)
FMI 02	Incorrect signal
CID 0709 - Solenoid Valve (Lockup Clutch)
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
FMI 11	Failure mode not identifiable
CID 0712 - Lamp (Retarder Control)
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
CID 0718 - Transmission System
FMI 13	Out of calibration
CID 0724 - Proportioning Solenoid (Hoist) (Raise)
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
CID 0725 - Proportioning Solenoid (Hoist) (Lower)
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
CID 0773 - Position Sensor (Hoist Lever)
FMI 03	Voltage above normal
FMI 04	Voltage below normal
FMI 08	Abnormal signal
CID 0826 - Temperature Sensor (Torque Converter Oil)
FMI 03	Voltage above normal
FMI 04	Voltage below normal
FMI 08	Abnormal signal
CID 0967 - Machine Application
FMI 02	Incorrect signal
FMI 09	Abnormal update
CID 1175 - Position Sensor (Body)
FMI 03	Voltage above normal
FMI 04	Voltage below normal
FMI 08	Abnormal signal
CID 1227 - Position Sensor (Retarder Lever)
FMI 03	Voltage above normal
FMI 04	Voltage below normal
FMI 08	Abnormal signal
CID 1236 - Lamp (Body Up)
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
CID 1279 - Proportioning Solenoid (Hoist) (Eject)
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
CID 1280 - Proportioning Solenoid (Hoist) (Retract)
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
CID 1283 - Position Sensor (Ejector Lever)
FMI 03	Voltage above normal
FMI 04	Voltage below normal
FMI 08	Abnormal signal
CID 1326 - ECM Location Code
FMI 02	Incorrect signal
CID 1401 - Solenoid Valve (Transmission Clutch) (No. 1)
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
FMI 11	Failure mode not identifiable
CID 1402 - Solenoid Valve (Transmission Clutch) (No. 2)
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
FMI 11	Failure mode not identifiable
CID 1403 - Solenoid Valve (Transmission Clutch) (No. 3)
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
FMI 11	Failure mode not identifiable
CID 1404 - Solenoid Valve (Transmission Clutch) (No. 4)
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
FMI 11	Failure mode not identifiable
CID 1405 - Solenoid Valve (Transmission Clutch) (No. 5)
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
FMI 11	Failure mode not identifiable
CID 1406 - Solenoid Valve (Transmission Clutch) (No. 6)
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
FMI 11	Failure mode not identifiable
CID 1407 - Solenoid Valve (Transmission Clutch) (No. 7)
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
FMI 11	Failure mode not identifiable
CID 1496 - Pressure Switch (Front Service Brake and Retarder)
FMI 03	Voltage above normal
FMI 04	Voltage below Normal
CID 1605- Solenoid Valve (Front Auto Retarder Supply)
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
CID 1606 - Solenoid Valve (Rear Auto Retarder Supply)
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
CID 1607 - Solenoid Valve (Front Auto Retarder Control)
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
CID 1608 - Solenoid Valve (Rear Auto Retarder Control)
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
CID 1610 - Solenoid Valve (Parking Brake) (No. 2)
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
CID 1640 - Pressure Switch (Rear Service Brake and Retarder)
FMI 03	Voltage above normal
FMI 04	Voltage below normal
CID 1674 - Solenoid Return (No.1)
FMI 05	Current below normal
CID 1675 - Solenoid Return (No.2)
FMI 05	Current below normal
CID 1695 - Dual Speed Control
FMI 03	Voltage above normal
FMI 04	Voltage below normal
CID 2177 - Implement and Steering Solenoid
FMI 03	Voltage above normal
FMI 05	Current below normal
FMI 06	Current above normal
CID 3716 - Torque Limiting Control
FMI 03	Voltage above normal
FMI 04	voltage below normal

( 1 )

For the Power Train/Chassis ECM, the MID is 027. This table pertains only to diagnostic codes with a MID of 027.

Note: This table shows the diagnostic codes for the Power Train/Chassis ECM only. The diagnostic codes for the Power Train/Chassis ECM are shown on the display area of the Caterpillar Monitoring System. The information of the diagnostic code for the Power Train/Chassis ECM is transferred via the CAT Data Link to the Caterpillar Monitoring System. This diagnostic information is shown when the Caterpillar Monitoring System is in the service mode. The module identifier (MID) tells the service person the Power Train/Chassis ECM that is sending the diagnostic code. The MID for the Power Train/Chassis ECM is 027. This Service Manual Module is used only for diagnostic codes with a MID of a 027. The Electrical System Schematic Supplement shows the module identifier (MID) codes of any other electronic controls on a machine. Information for electronic troubleshooting of the diagnostic codes (MID is not 027) can be found in the service manual for that system.