C1617
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.
DIAGNOSTIC TROUBLE CODE SET CONDITIONS
The code is set when the signal necessary for AWC control cannot be received.
PROBABLE CAUSES
- The CAN bus line is defective.
- Malfunction of engine control module
- Malfunction of ASC-ECU
- Malfunction of steering wheel sensor
- Malfunction of the ETACS-ECU
- Malfunction of AWC-ECU
DIAGNOSTIC PROCEDURE
STEP 1. Scan tool CAN bus diagnostics
Using scan tool MB991958, diagnose the CAN bus lines.
Q. Is the check result normal?
YES Go to Step 3.
NO Repair the CAN bus lines. CAN Bus Diagnostics Chart.) After repairing the CAN bus line, go to Step 2.
STEP 2. Check whether the DTC is reset.
Q. Is DTC No. C1617 set?
YES Go to Step 3.
NO 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 Super All Wheel Control (S-AWC).)
Q. Is the DTC set?
YES Perform the relevant troubleshooting.
NO Go to Step 4.
STEP 4. Scan tool diagnostic trouble code
- Check the engine diagnostic trouble code. Multiport Fuel Injection (MFI) .)
- Check the ASC diagnostic trouble code. Active Stability Control System (ASC) .)
- Check the ETACS diagnostic trouble code. Electronic Time and Alarm Control System (ETACS) .)
Q. Is the DTC set?
YES Perform the relevant troubleshooting.
NO Go to Step 5.
STEP 5. Check whether the DTC is reset.
Q. Is DTC No. C1617 set?
YES Replace the AWC-ECU.(Refer to Active Center Differential (ACD).) Then go to Step 6.
NO Intermittent malfunction. How to Cope With Intermittent Malfunctions.)
STEP 6. Check whether the DTC is reset.
Q. Is DTC No. C1613 set?
YES Return to Step 1.
NO This diagnosis is complete.