PLATE 2426912 - Caterpillar

Programmable Parameters
The Electronic Ignition System's control module (EIS control module) and the Electronic Control Module (ECM) have several parameters that can be programmed for the individual installation. The Digital Diagnostic Tool (DDT) or the Caterpillar Electronic Technician (ET) is necessary for programming the parameters.The parameters are grouped into the following two menus on the DDT: "Engine Arrangement" and "Engine Performance". Refer to Table 1 for the names of each parameter.Refer to Systems Operation/Testing and Adjusting, "Electronic Control System Parameters" for the descriptions of the parameters.
Table 1
Programmable Parameters for the Electronic Ignition System (EIS)    
   DDT    Cat ET    
EIS     "DET SENSORS"     "Number of Detonation Sensors"    
EIS     "SPEED TIMING MAP"     "Rating Number"    
EIS     "LOAD TIMING MAP"     "Engine Load Timing Map"    
EIS     "ENGINE TYPE"     "Engine Configuration"    
"Timing"    
EIS     "DES ENG TIMING"     "Desired Engine Ignition Timing"    "Engine Type"
The "Engine Type" determines the firing order and the correct engine bank angle. After programming, the EIS control module will check the configuration of the transformer during start-up in order to determine if the correct "Engine Type" has been entered. If the configuration type is incorrect a 328-02 Number of Cylinders mismatch will be generated. The DDT will display "Undeterminded".Detonation Sensors
The EIS control module must be programmed for the number of detonation sensors that is used on the engine. After programming, the EIS control module will check the sensors in order to determine if the number that is entered is correct. If the number is incorrect a diagnostic code will be generated.Note: The number of detonation sensors that can be programmed into the EIS is zero, one, or two. The default value is set at two.Engine Performance Parameters
The speed timing map parameter allows the customer to select one of six timing maps. The timing maps are based on the maximum operating speed of the engine. These timing maps provide speed sensitive timing. Speed sensitive timing offers better engine performance under changes in the speed.Table 2 lists the six numbers for the maps and the corresponding maximum engine speeds. The default speed timing map is 01. Details of each timing map are given in the tables below.
Table 2
Map Number     Engine Speed    
00     No selection    
01     1200 RPM    
02     1100 RPM    
03     1000 RPM    
04     1400 RPM    
05     1500 RPM    
06     1800 RPM    Load Timing Map
The "Load Timing Map" parameter allows the customer to enable the "Load Sensitive Timing Map". This parameter also allows the customer to disable the "Load Sensitive Timing Map".Map 01
The engine timing is advanced by six degrees when the intake manifold pressure approaches 50 kPa (7 psi). The timing retards back to zero degrees advance as the intake manifold pressure approaches 100 kPa (14 psi).Map 02
The engine timing is retarded by six degrees when the intake manifold pressure approaches 50 kPa (7 psi). The engine timing will