Customer parameters may be changed repeatedly as a customer's operation changes or as new drivers are assigned to a truck. Customer passwords are required to change these parameters. The customer password must be programmed into the Engine Control Module (ECM).
The following information is a brief description of the customer specified parameters. The following parameter values are included with the descriptions:
- Minimum
- Maximum
- Default
The tables show values in an approximate range for metric units that is followed by the metric conversion to English units. The exact range of the parameter in metric units depends on the service tool that is being used. Each tool may use slightly different conversion factors.
The customer parameter lockout is available in order to restrict access to changing some of the available parameters. Locking out a parameter requires customer passwords (if used). Once a parameter is locked out, the parameter can not be changed until the parameter is unlocked.
If a lockable parameter is not locked out, factory passwords are not required. A locked out parameter restricts the parameter from being changed directly by the operator. This helps vehicle owners that are encountering problems with operators that are obtaining customer passwords and altering some of these parameters.
A locked out parameter also provides an audit trail. The audit trail can be used to determine the following information:
- Time of change
- Operator during change
The following C15 customer parameters are available for lockout:
- Multi-Torque Ratio
- Vehicle Speed Calibration
- Vehicle Speed Cal (J1939 - Trans)
- Vehicle Speed Cal (J1939 - ABS)
- Vehicle Speed Limit
- VSL Protection
- Soft Vehicle Speed Limit
- Two Speed Axle - Low Speed Range Axle Ratio
- Nominal Axle Ratio - High Speed Range Axle Ratio
- Low Cruise Control Set Speed Limit
- High Cruise Control Set Speed Limit
- Adaptive Cruise Control Enable
- Transmission Style
- Top Gear Ratio
- Top Gear Minus One Ratio
- Top Gear Minus Two Ratio
- A/C Switch Fan On-Time
- Engine Retarder Delay
- Engine Monitoring Lamps
- Engine Coolant Temperature Derate Enable Status Prior to DEC 03
- Vehicle Overspeed Threshold
- Driver Reward Enable
- Fan Control Type
The following C13 (with A4 ECM) customer parameters are available for lockout:
- Adaptive Cruise Control Enable
- Default Torque Limit Master Source Address
- Driver Reward Enable
- Engine Monitoring Lamps
- Engine Retarder Delay
- Fan Control Type
- High Cruise Control Speed Set Limit
- High Speed Range Axle Ratio
- Low Cruise Control Speed Set Limit
- Low Speed Range Axle Ratio
- Multi-Torque Ratio
- Soft Vehicle Speed Limit
- Top Gear Minus One Ratio
- Top Gear Minus Two Ratio
- Top Gear Ratio
- Transmission Style
- Vehicle Overspeed Threshold
- Vehicle Speed Calibration (J1939-ABS)
- Vehicle Speed Calibration (J1939-Trans)
- Vehicle Speed Calibration
- Vehicle Speed Limit
- VSL Protection
When an attempt to change a locked out parameter occurs, the factory password screen will come up. If changing the parameter is required, follow the instructions on the Caterpillar Electronic Technician (ET).
Factory passwords are also required to change a parameter from a locked parameter to an unlocked parameter. If more than one parameter is locked out, and each one needs to be unlocked, one factory password is required.