THUMB GP 4511525 - Caterpillar

Idle Validation
All analog throttles and digital throttles can have an idle validation switch. If this parameter is programmed to "Yes", the ECM will look for this switch input on pin J1:22 for Idle Validation Switch 1 (IVS1) and J1:40 for Idle Validation Switch 2 (IVS2).
Table 4
Values    Default    
No
Yes     Yes    Idle Validation Minimum Off (Open) Threshold
This parameter is the minimum throttle percentage that will be detected by the ECM when the IVS is ON (Closed).If the ECM detects a throttle percentage below this value with the idle validation switch OFF (Open), a fault code will be generated 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 Min OFF     OFF     Minimum Position     Raise IVS fault     Force throttle demand to minimum    
TPS< IVS Min OFF     ON     Throttle Position     No fault     Normal operation    
Table 6
Range    Default    
0 to 100%     21%    Idle Validation Maximum On (Closed) Threshold
This parameter 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 7 and Table 8.
Table 7
Throttle Position Sensor (TPS)     Idle Validation Switch (IVS)     Throttle Demand Output     Fault Status     Comment    
TPS> IVS Max ON     OFF     Throttle Position     No fault     Normal operation    
TPS< IVS Min Off     ON     Minimum Position     Raise IVS fault     Force throttle demand to minimum    
Table 8
Range    Default    
0 to 100%     25%    Lower Dead Zone
This parameter is a throttle range above the initial lower position limit before the engine will increase in rpm.
Table 9
Range    Default    
0 to 100%     5%    Upper Dead Zone
This parameter is a throttle range that is below the initial upper position limit that does not allow the engine speed to increase.
Table 10
Range    Default    
0 to 100%     5%    Initial Upper Position Limit
This parameter 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 11
Range    Default    
0 to 100%     70%    Upper Position Limit
This parameter 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 12
Range    Default    
0 to 100%     85%    Upper Diagnostic Limit
This parameter is the minimum throttle percentage that