STEERING COLUMN GP 1211991 - Caterpillar

Control Port (Data Link)
The communication adapter will communicate with Electronic Control Modules (ECM) when connected with the correct application service cable listed below: 7X1570 ... Communication Adapter to CAT data link7X1412 ... Communication Adapter to ATA data linkThe communication links available at this port are the internal fuse protected SAE J1708 protocol over an EIA RS485 data link (ATA), and the proprietary CAT data link.Service Tool Port (Data Link)
The communication adapter will communicate with service tools such as the Electronic Control Analyzer Programmer (ECAP) or Digital Diagnostic Tool (DDT), or a personal computer (PC) when connected with the correct application service cable listed below: 7X1420 ... Communication Adapter to ECAP (Plastic .. PORT 1)7X1851 ... Communication Adapter to ECAP (Metal .. PORT 1)7X1688 ... Communication Adapter to RS232 (PC)The communication links available at this port are the internal fuse protected SAE J1708 protocol over an EIA RS485 data link (ATA), the proprietary CAT data link, and the RS232 data link.Power
Electrical power for the communication adapter can be sourced from an external vehicle battery or any DC voltage source from 11 to 45 volts at 0.5 amps using the correct application service cable. The power input and ground are fuse protected at 2 amps internal to the communication adapter.Service Program Module Installation
The NEXG4523 Service Program Module (SPM) for the Communications Adapter must be ordered separately through the Caterpillar Literature System.
The service program module is packaged in a container to protect it from static discharge.Before touching the module in the container, or removing from the Communication Adapter, be sure to discharge any static electricity in your body by touching a grounded surface.Use care when opening to prevent damage to the Service Program Module.
1. Place 7X1701 Communication Adapter (1) face down on a clean and level surface. 2. Remove six screws (2) holding cover (3) in place and remove cover for access to the 7X1701 Communication Adapter's circuit board (4).3. Locate Service Program Module Socket (5) on circuit board (4).
Use only finger pressure to remove or install a Service Program Module.The use of any mechanical tool can damage the program module and/or socket.
4. Install Service Program Module (6) from Conversion Group into empty socket (5). The Service Program Modules and sockets are keyed so that they can only be installed in the correct (seated) position.5. Reinstall cover panel (3) using six screws (2).Decal Installation
1. Place Communication Adapter (1) face down on a clean and level surface.2. Remove paper backing of Communication Adapter Back Graphic Decal (2) and install on Communication Adapter back cover.Internal Fuse Removal/Test/Replacement
Fuse Removal (For 7X1571 Fuse and 7X1569 Fuse Only)
1. Place 7X1701 Communication Adapter (1) face down on a clean and level surface. 2. Remove six screws (2) holding cover (3) in place and remove cover for access to fuse compartment and fuse location identifier F1, F2, and F3.3. Slide connector panel (4) to one side.4. Locate three fuses in fuse compartment (5).5. Remove the suspect fuse.Fuse Test (For 7X1571 Fuse and 7X1569