DTC U0100: Engine ECU CAN timeout; DTC U0101 T/M ECU CAN timeout; DTC U0114 AWD ECU CAN timeout; DTC U0126 Steering angle sensor CAN timeout; DTC U0141 ETACS-ECU CAN timeout; DTC U0317 EPB CAN timeout; DTC U15A0 ACC/FCM ECU CAN timeout; DTC U15A5 FCM/LDW/AHB CAN timeout: Diagnosis

STEP 1. Scan tool (M.U.T.-III) CAN bus diagnostics
CAUTION: To prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-III).
1. Connect scan tool (M.U.T.-III). Refer to "How to connect the Scan Tool (M.U.T.-III) ABS WARNING LIGHT, ASC WARNING/OPERATION LIGHT, BRAKE WARNING LIGHT AND BRAKE AUTO HOLD INDICATOR CHECK ."
2. Turn the ignition switch to the "ON" position.
3. Diagnose the CAN bus line.
4. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the check result normal?

YES: Go to Step 2.

NO: Repair the CAN bus lines (Refer to - CAN BUS DIAGNOSTICS TABLE ). On completion, go to Step 4.
STEP 2. Check whether the DTC is set again.
Q: Is DTC U0100, U0101, U0114, U0126, U0141, U0317, U15A0 or U15A5 set?

YES: Go to Step 3.

NO: The procedure is complete.
STEP 3. Scan tool (M.U.T.-III) other system DTC
Use scan tool (M.U.T.-III) to check that other DTC is set in the ECU corresponding to the relevant diagnosis.

Q: Is other DTC set?

YES: Troubleshoot for the relevant DTC.

NO: Go to Step 4.
STEP 4. Scan tool (M.U.T.-III) DTC
Use scan tool (M.U.T.-III) to check if the same DTC (time-out) is set in the other ECU.

Q: Is any DTC set?

YES (DTC U0100 is set): Replace the ECM (Refer to - ENGINE CONTROL MODULE (ECM) <2.4L ENGINE>, - ENGINE CONTROL MODULE (ECM) <3.0L ENGINE>).

YES (DTC U0101 is set): Replace the TCM (Refer to - TCM <CVT> or - TCM <A/T>).

YES (DTC U0114 is set): Replace AWD-ECU (Refer to AWD-ECU ) <Vehicles without S-AWC> or AWC-ECU (Refer to - AWC-ECU ) <CVT (Vehicles with S-AWC)> or Refer to - AWC-ECU ) <A/T (Vehicles with S-AWC)>.

YES (DTC U0126 is set): Replace steering wheel sensor (Refer to STEERING WHEEL SENSOR ).

YES (DTC U0141 is set): Replace the ETACS-ECU (Refer to - ETACS ).

YES (DTC U0317 is set): Replace the electric parking brake ECU (Refer to - ELECTRIC PARKING BRAKE ECU ).

YES (DTC U15A0 is set): Replace the ACC-ECU (Refer to - ADAPTIVE CRUISE CONTROL SYSTEM (ACC) ).

YES (DTC U15A5 is set): Replace the FCM/LDW/AHB-ECU (Refer to STEERING WHEEL SENSOR ).

NO (No DTC is set.): Go to Step 5.
STEP 5. Check whether the DTC is set again.
Erase the DTC.

Q: Is DTC U0100, U0101, U0114, U0126, U0141, U0317, U15A0 or U15A5 set?

YES: Replace the hydraulic unit (integrated with ASC-ECU) (Refer to HYDRAULIC UNIT ).

NO: The procedure is complete.