(7) Cat Data Link + Table 1 Troubleshooting Test Stepsġ. J61 and P61 terminals that are associated with the Cat Data Link P1 terminals that are associated with the Cat Data Link This information will not be available if communication fails between the ECM and Cat ET. Cat ET can also be used to configure the ECM parameters. The ECM communicates with Cat ET in order to share status information and diagnostic information. The Cat Data Link is the standard data link that is used by the ECM to communicate with Cat ET. If you are experiencing problems with communications between Cat® Electronic Technician (ET) and the Electronic Control Module (ECM), refer to troubleshooting without a diagnostic code Troubleshooting, “Electronic Service Tool Will Not Communicate with ECM” before you use this procedure. Note: This procedure checks for an open circuit or for a short circuit in the Cat Data Link.
