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DTC C1631: ETACS CAN Data (not received)
 
 
caution
  • If there is any problem in the CAN bus lines, an incorrect DTC may be set. Prior to this diagnosis, diagnose the CAN bus lines.
  • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
 
 
OPERATION
AWC-ECU communicates with the ETACS-ECU via the CAN bus lines.
 
 
DTC SET CONDITIONS
This DTC is set when the CAN signal of the ETACS-ECU cannot be received.
 
 
PROBABLE CAUSES
  • Malfunction of the CAN bus line
  • Damaged connectors (ETACS-ECU)
  • ETACS-ECU malfunction
  • Malfunction of AWC-ECU

 
 
DIAGNOSIS
STEP 1. Scan tool (M.U.T.-IIISE) CAN bus diagnostics.
Use scan tool (M.U.T.-IIISE) to perform the CAN bus diagnosis.
Is the check result normal?
Go to Step 2.
Repair the CAN bus lines (Refer to GROUP 54C - Diagnosis, Can Bus Diagnostics Table ).
 
STEP 2. Scan tool (M.U.T.-IIISE) other system DTC.
Check the ETACS DTC (Refer to GROUP 54A - Diagnosis, Diagnostic Trouble Code Chart ).
Is the DTC set?
Perform the relevant troubleshooting.
Go to Step 3.
 
STEP 3. Check whether the DTC is set again.
Is the DTC C1631 set?
Replace the AWC-ECU (Refer to ).
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).