FAN-BLOWER 1235978 - Caterpillar

Electronic Control Module (ECM)
Illustration 1 g03648787
Mounting location for the control modules (1) Electronic control module 1 (2) Electronic control module 2 (3) Electronic control module 3 (4) Controller 4Pin Locations
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Machine ECM Connector (42-Pin)The Cat Data Link is used to provide a connection for the service tool for troubleshooting, testing, and calibrations. The data link is bidirectional. The data link allows the ECM to receive information. The data link also allows the ECM to send information.
Table 1
Electronic Control Module 1    
Pin Location    Function    Description    
4     Output     Grapple Open/Close A (Pin 2), Grapple Open/Close B (Pin 2)    
5     Output     Grapple Rotate A (Pin 2), Grapple Rotate B (Pin 2)    
18     Output     Grapple Open/Close A (Pin 1)    
19     Output     Grapple Rotate A (Pin 1)    
32     Output     Grapple Open/Close B (Pin 1)    
33     Output     Grapple Rotate B (Pin 1)    Outputs
The ECM responds to decisions by sending electrical signals to the outputs. The outputs can create an action or the outputs can provide information to the operator or the service technician.Solenoids
On/Off Solenoids
Illustration 3 g01158530
Table 2
Rated Voltage     24 VDC    
Coil Resistance     32.0 3.2Ω (T=20° C)    CAN Data Link
J1939
The IQAN-MDL2 uses a CAN-bus to communicate with the IQAN expansion modules and other systems. The CAN-bus is a robust communication protocol. The unit has four (4) CAN buses, CAN-A through CAN-D. The buses may be configured using IQAN software to be SAE J1939 defined CAN protocol. Any of the CAN buses may be used for communication and diagnostics. A CAN communication card is required for your PC to use this feature.