U1221

DTC U1221 CAN-HS ECM NO-RECEIVE DATA

DTC DETECTING CONDITION:
Defective ECM. (If error is in the main harness, DTC P0600 CAN communication link is input simultaneously.)

NOTE: When more than two DTCs are displayed. Refer to LAN(diag)-30,DTC TABLE, LIST, List of Diagnostic Trouble Code (DTC). Diagnostic Procedure with Diagnostic Trouble Code (DTC)

TROUBLE SYMPTOM:
- Malfunction indicator light illuminates.
- "Er HC" is displayed in odo/trip meter.
- P1718 (TCM) and C0057 (VDCCM) are output.

Wiring Diagram:

Step 1-7:

Step 8-10: