Monitor DTC Status

Engine

Engine Control - U0001 CAN Communication Malfunction - Monitor Scantool Data

Monitor Scantool Data

1. Connect scantool to Data Link Connector (DLC).
2. Warm up the engine to normal operating temperature.
3. Monitor the "CAN" parameters on the scantool.
- Check the value of current data displayed normally.
- Check "Transaxle Range Switch" and "Torque Required from TCU" parameters among ECU's current data. (AT vehicle only)
- Check "TPS", "RPM", and "Idle Status" parameters among TCU's current data. (AT vehicle only)
- Check "RPM" and "TPS" parameters among ABS's current data. (ABS or ESP vehicle only)
4. Are the parameters displayed correctly?
YES
1) Fault is intermittent caused by poor contact in the sensor's and/or ECM's connector or was repaired and ECM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of vehicle Repair" procedure.
NO
1) Go to "Terminal & Connector Inspection" procedure.