SPIDER AS-FAN 1420811 - Caterpillar

Idle Validation Maximum On (Closed) Threshold
This is the maximum throttle percentage that will be detected by the ECM when the idle validation switch (IVS) is OFF (Open) . When the idle validation switch is OFF (Open) and the ECM detects a signal that is higher than the programmed value for IVS Max ON, the ECM will generate a fault code and the engine will remain at idle.Refer to Table 5 and Table 6.
Table 5
Throttle Position Sensor (TPS)     Idle Validation Switch (IVS)     Throttle Demand Output     Fault Status     Comment    
TPS> IVS Max ON     OFF     Throttle Position     Clear unexpected idle     Normal operation    
TPS< IVS Min Off     ON     Minimum Position     Raise unexpected idle.     Force throttle demand to minimum    
Table 6
Range    Default    
0 to 100%     25%    Lower Diagnostic Limit
This is the minimum throttle percentage that should be detected by the ECM in normal operation when the pedal is in the "off" position. A value below this limit will generate a short circuit diagnostic code. The range of this diagnostic detection area is from 0 percent to the programmed value for the lower position limit.
Table 7
Range    Default    
0 to 100%     5%    Upper Diagnostic Limit
This is the minimum throttle percentage that is detected by the ECM in normal operation when the pedal is in the maximum position. A value above this limit will generate an open circuit diagnostic code. The range of this diagnostic detection area is from the programmed value of the upper position limit to 100 percent.
Table 8
Range    Default    
0 to 100%     95%    Lower Position Limit
This is the minimum throttle percentage that will be interpreted by the ECM as zero throttle. This parameter is used with the value of initial lower position limit to make an allowance for manufacturing tolerances between different pedals.
Table 9
Range    Default    
0 to 100%     10%    Upper Position Limit
This is the maximum throttle percentage that will be interpreted by the ECM as full throttle. This parameter is used with the value of the initial upper position limit to make an allowance for manufacturing tolerances between different pedals.
Table 10
Range    Default    
0 to 100%     85%    Initial Lower Position Limit
This is the maximum throttle percentage that will be interpreted by the ECM as zero throttle. This parameter is used with the value of the lower position limit to make an allowance for manufacturing tolerances between different pedals.
Table 11
Range    Default    
0 to 100%     20%    Initial Upper Position Limit
This is the minimum throttle percentage that will be interpreted by the ECM as full throttle. This parameter is used with the value of the upper position limit to make an allowance for manufacturing tolerances between different pedals.
Table 12
Range    Default    
0 to 100%     70%    Lower Dead Zone
This is a throttle range above the initial lower position limit before the engine will increase