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DTC C1617: AWC CAN Main Data System (Data Not Received)


caution
  • If there is any problem in the CAN bus lines, an incorrect diagnostic trouble code 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 receives various data from ECU via CAN communication.

DTC SET CONDITIONS


The code is set when the signal necessary for AWC control cannot be received.

PROBABLE CAUSES



DIAGNOSTIC PROCEDURE

STEP 1. Scan tool CAN bus diagnostics
Using scan tool MB991958, diagnose the CAN bus lines.

Q. Is the check result normal?
Go to Step 3.
Repair the CAN bus lines. (Refer to GROUP 54C - Troubleshooting ). After repairing the CAN bus line, go to Step 2.

STEP 2. Check whether the DTC is reset.

Q. Is DTC No. C1617 set?
Go to Step 3.
This diagnosis is complete.

STEP 3. Scan tool diagnostic trouble code
Check if the AWC-related DTC No.U0100, U0101, U0121, U0126, or U0141 is set. (Refer to ).

Q. Is the DTC set?
Perform the relevant troubleshooting.
Go to Step 4.

STEP 4. Scan tool diagnostic trouble code

  • Check the engine diagnostic trouble code. (Refer to GROUP 13B - Troubleshooting ).
  • Check the ASC diagnostic trouble code. (Refer to GROUP 35C - Troubleshooting ).
  • Check the ETACS diagnostic trouble code. (Refer to GROUP 54A - Troubleshooting ).

Q. Is the DTC set?
Perform the relevant troubleshooting.
Go to Step 5.

STEP 5. Check whether the DTC is reset.

Q. Is DTC No. C1617 set?
Replace the AWC-ECU. (Refer to ). Then go to Step 6.
Intermittent malfunction. (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).

STEP 6. Check whether the DTC is reset.

Q. Is DTC No. C1617 set?
Return to Step 1.
This diagnosis is complete.