ECM Will Not Communicate with Other Systems or Display Modules
- Electronic Control Module (ECM)
- Electrical connectors
- CAT Data Link
- CAN Data Link
- Connect the Caterpillar Electronic Technician (ET) to the service tool connector. If the ECM does not communicate with Cat ET, refer to Troubleshooting, "Electronic Service Tool Will Not Communicate with ECM".
- Ensure that the following items are correctly installed and undamaged. Refer to Troubleshooting, "Inspecting Electrical Connectors".
- J1/P1 and J2P2 ECM connectors
- Customer connectors
- Wiring to display modules
- Wiring to other control modules
- Troubleshoot the CAT Data Link for possible problems. Refer to Troubleshooting, "Cat Data Link".
- Troubleshoot the CAN Data Link for possible problems. Refer to Troubleshooting, "CAN Data Link".
Caterpillar Information System:
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