850026T 1 Mercury PISTON ASSEMBLY

Customer Parameter Lockout
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, factory passwords are required to change the parameter. Also, once a parameter is locked out, factory passwords are required to unlock the parameter.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 customer. This procedure 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 changeThe following customer parameters are available for lockout:
"A/C Pressure Switch Fan-On Time"
"Battery Monitor and Engine Control Voltage "
"Battery Monitor and Low Idle Engine Speed"
"High Cruise Control Speed Set Limit"
"High Speed Range Axle Ratio"
"Low Speed Range Axle Ratio"
"Max PTO Vehicle Speed"
"Soft Vehicle Speed Limit"
"Top Engine Limit"
"Transmission Style"
"Two Speed Axle Switch"
"Vehicle ID"
"Vehicle Speed Cal (J1939-ABS)"
"Vehicle Speed Cal (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 service tool display.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.Customer Specified Parameters Table
Table 1
Customer Specified Parameters
ECM Parameter Possible Values Default Value
Engine Rating Parameter
"Rating Number" Dependent on engine power -
Vehicle ID
"Vehicle ID" 17 Digits
Available characters are dependent on the service tool that is used. Not Programmed
+Truck Manufacturer
"Truck Manufacturer"
(C7 Engines) GM
Other Not Programmed
"Truck Model Type"
(C7 Engines) GM 530/540
GMT-560 GM 530/540
Vehicle Speed Parameters
"Vehicle Speed Calibration" GM: 2485 to 238080 PPKM (4000 to 384000 PPM)
Other: 2485 to 238080 PPKM (4000 to 384000 PPM) 19884 PPKM (32000 PPM)
Not Programmed
"Vehicle Speed CAL (J1939-Trans)" 0 to 43000 rev per km (0 to 65000 rev per mile) Not Programmed
"Vehicle Speed CAL (J1939-ABS)" 0 to 6.550 Not Programmed
"Vehicle Speed Limit (VSL)" GM: 48 to 121 km/h (30 to 75 mph)
Other: 48 to 204 km/h (30 to 127 mph) GM: 121 km/h (75 mph)
Other: 204 km/h (127 mph)
"VSL Protection" 1700 to TEL rpm TEL rpm
"Tachometer Calibration" (2.0 to 500.0 PPR) GM 530/540: (17.5 PPR)
GMT-560: (2.0 PPR)
Other: (134.0 PPR)
"Soft Vehicle Speed Limit" Yes
No No
"Low Speed Range Axle Ratio" 0.00 to 19.99 0.00
"High Speed Range Axle Ratio" 0.0 to 9.99 0.00
Cruise Control Parameters
"Low Cruise Control Speed Set Limit" GM: 40 to 121 km/h (25 to 75 mph)
Other: 24 to 204 km/h (15 to 127 mph) GM: 40 km/h (25 mph)
Other: 204 km/h (127 mph)
"High Cruise Control Speed Set Limit" GM: 48 to 121 km/h (30 to 75 mph)
Other: 32 to 204 km/h (20 to 127 mph) GM: 121 km/h (75 mph)
Other: 204 km/h (127 mph)
"Engine Brake Mode" Coast
Latch
Manual Manual
"Cruise/Idle/PTO Switch Configuration" Set/Decel-Res/Accel
Set/Accel-Res/Decel GM: Set/Decel
Other: Set/Accel
"Soft Cruise Control" Yes
No GM: No
Other: Yes
"Auto Retarder in Cruise (0 = Off)" 5 to 16 km/h (3 to 10 mph) 0 km/h (0 mph)
Idle Parameters
"Idle Vehicle Speed Limit" 2 to 24 km/h (1 to 15 mph) 2 km/h (1 mph)
"Idle RPM Limit" 700 to TEL rpm TEL rpm
"Idle/PTO RPM Ramp Rate" (5 to 1000 rpm/sec) (50 rpm/sec)
"Idle/PTO Bump RPM" 5 to 500 rpm 20 rpm
"Fast Idle RPM 1" 700 to TEL rpm 1000 rpm
"Fast Idle RPM 2" 700 to TEL rpm 0 rpm
"Warm up Mode Idle Speed" 700 to 1400 rpm 1000 rpm
PTO Parameters
"PTO Configuration" Off
Cab Switches
Remote Switches
Remote Throttle Off
"PTO Top Engine Limit" 700 to TEL rpm TEL rpm
"PTO Engine RPM Set Speed" Low idle to PTO TEL rpm 0 rpm
"PTO Engine RPM Set Speed A" Low Idle to PTO TEL rpm 0 rpm
"PTO Engine RPM Set Speed B" Low Idle to PTO TEL rpm 0 rpm
"PTO to Set Speed" Yes
No No
"Maximum PTO Enable Speed" 700 to TEL rpm TEL rpm
"PTO Cab Controls RPM Limit" Low idle rpm
TEL rpm
PTO TEL rpm TEL rpm
"PTO Kickout Vehicle Speed Limit" 2 to 204 km/h (1 to 127 mph) 2 km/h (1 mph)
Maximum PTO Vehicle Speed 5 to 204 km/h (3 to 127 mph) 204 km/h (127 mph)
"Torque Limit" 135 N m (100 lb ft) to Rated Torque 2712 N m (2000 lb ft)
"PTO Shutdown Time"&nbs