773E and 777D Off-Highway Truck/Tractor Object Detection System (Two Cameras) Caterpillar

Diagnostic Code List

Usage:

773E ASK

Diagnostic Codes

Use the Caterpillar Electronic Technician (Cat ET) or the display of the object detection system in order to determine the object detection system diagnostic codes. 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 tables is a list of possible diagnostic codes for the object detection system.

Note: Table 1 shows the diagnostic codes for the object detection system display only. The module identifier (MID) indicates to the service personnel that the ECM is sending the diagnostic code. The MID for the display of the object detection system is MID 134. The Electrical System Schematic shows the module identifier (MID) codes of any other electronic controls on a machine. Information for electronic troubleshooting of the diagnostic codes other than MID 134 can be found in the service manual for that system.

Off-Highway Truck

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Table 1
Component	Diagnostic Code	Type of Failure	Possible Cause
CAN Data Link	247-9	CAN Data Link Not Communicating	Abnormal update rate on the CAN data link. Object detection system disabled. System reactivates when all CAN parameters are available.
Battery Supply	168-3	Voltage Above Normal	System Voltage Above Normal. There is a possible issue with the charging system. Object detection system and warnings disabled until system voltage returns below threshold.
Battery Supply	168-4	Voltage Below Normal	System Voltage Below Normal. There is a possible issue with the charging system. Object detection system and warnings disabled until system voltage returns above threshold.
CDL Fault	248-9	Cat Data Link not communicating	Abnormal update rate on the CAT Data link Object detection system disabled. System reactivates when all CAN parameters are available.
Object Detection Sensor #2	3318-9	Medium Range Object Detection Sensor #2 : Abnormal Update Rate	No data from Rear Object Detection Sensor. Object detection system and warnings disabled until fault is fixed.
Object Detection Sensor #2	3318-12	Medium Range Object Detection Sensor #2 : Failure	Rear Object Detection Sensor detects failure. Object detection system and warnings disabled until fault is fixed.
Object Detection Sensor #3	3319-9	Medium Range Object Detection Sensor #3 : Abnormal Update Rate	No data from Front Object Detection Sensor. Object detection system and warnings disabled until fault is fixed.
Object Detection Sensor #3	3319-12	Medium Range Object Detection Sensor #3 : Failure	Front Object Detection Sensor detects failure. Object detection system and warnings disabled until fault is fixed.