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Bit Code Definitions
from Cat C-10 C-12 C-15 C-16 Truck Engines Electrical &Electronic Application & Installation Guide Manual
20.14 Bit Code Definitions
Status Definition: Parameter Name Indication Indication
Engine Status Code Definitions (PID 2):
Bit 7 Low Oil Pressure 0 = not active 1 = active
Bit 6 Powertrain Data Link 0 = not active 1 = active
Bit 5 undefined 0 = not active 1 = active
Bit 4 undefined 0 = not active 1 = active
Bit 3 Cold Mode 0 = not active 1 = active
Bit 2 Road Speed Limit 0 = not active 1 = active
Bit 1 Top Engine Limit 0 = not active 1 = active
Bit 0 Engine Shutdown 0 = not active 1 = active
Bit code definitions for Cruise Control Status (PID 85), Engine Brake Status (PID 121), Parking Brake Switch (PID 70), Idle Shutdown Status (PID 71), Road Speed Limit Status (PID 83), and Power Take Off Status (PID 89) are as per SAE J1587 definitions.
NOTE: The Caterpillar service tools follow the SAE/ATA J1587 and J1708 standards in all communications.
Service tool interfacing is done using the escape provision defined in SAE J1587. The escape information is considered proprietary and is, therefore, not described here.
