24H Motor Grader Transmission Electronic Control System And Hydraulic Calibrations Caterpillar

The CAT Data Link is an input/output of the transmission ECM. The Data Link communicates with other electronic control modules (ECM) on the machine or with a service tool. The Data Link is bidirectional. This allows the transmission ECM to input information and this allows the ECM to output information. The Data Link is not a visible component. The Data Link consists of the following parts: internal ECM circuits, the related harness wiring and the service tool connector. The CAT Data Link connects to J1-3 and J1-9 of the ECM.

A large amount of information is available on the CAT Data Link. The transmission ECM and the Caterpillar Monitoring System require the use of certain data that is sent back and forth on the CAT Data Link. The following list contains some of the information that is sent by the transmission ECM. This information is used or displayed by the Caterpillar Monitoring System:

• The status of the gear is shown on the monitor.

• The status of the parking brake is used by the monitor.

• The angle of articulation is shown on the monitor.

• Machine speed is shown on the monitor.

• The position of the shift lever is used by the monitor.

• The displacement angle of the ripper is shown on the monitor.

• Diagnostic service codes are shown on the monitor.

Note: All electronic control modules that use the CAT Data Link have a module identifier (MID). Examples of the module identifiers (MID) are listed below:

Transmission Electronic Control System ... 081

Caterpillar Monitoring System ... 030