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DTC U0230: Power Gate CAN timeout
 
 
caution
  • If DTC No.U0230 is set in the ETACS-ECU, always diagnose the CAN main bus line.
  • Before replacing the ECU, ensure that the power supply circuit, the ground circuit and the communication circuit are normal.
 
 
DIAGNOSTIC FUNCTION
If no signal from the power liftgate control unit can be received, ETACS-ECU sets DTC No. U0230.
 
 
DTC SET CONDITION
After the following statuses continue for 5 seconds, if the communication with the power liftgate control unit cannot be established for 2,500 ms or more, ETACS-ECU determines that a problem has occurred.
  • No abnormality is present to the network.
  • Electric motor switch is in the ON position.
  • No abnormality is present to the power supply fuse (IOD fuse), or the odometer value is at 80.5 km (50.0 miles) or more.
  • ETACS-ECU system voltage is at 10 - 16 V.
 
 
TROUBLESHOOTING HINTS
  • The power liftgate control unit may be defective
  • The ETACS-ECU may be defective
  • The CAN bus line may be defective
 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-IIISE), diagnose the CAN bus line.
(1)
cautionTo prevent damage to scan tool (M.U.T.-IIISE), always turn off the power supply mode of the electric motor switch before connecting or disconnecting scan tool (M.U.T.-IIISE).
Connect scan tool (M.U.T.-IIISE). Refer to "How to connect the Scan Tool (M.U.T.-IIISE) ."
(2) Press the electric motor switch to turn on the power supply mode.
(3) Diagnose the CAN bus line.
(4) Press the electric motor switch to turn off the power supply mode.
Is the CAN bus line found to be normal?
Go to Step 2.
Repair the CAN bus lines. (Refer to GROUP 54C - Diagnosis .)
 
STEP 2. Using scan tool (M.U.T.-IIISE), read the power liftgate control unit DTC.
Check if a DTC is set in the power liftgate control unit.
Is the DTC set?
Diagnose the power liftgate control system (Refer to GROUP 42A - Troubleshooting ).
Go to Step 3.
 
STEP 3. Using scan tool (M.U.T.-IIISE), read the A/C DTC.
Check if DTC No. U0230 is set in A/C-ECU.
Is the DTC set?
Go to Step 4.
Go to Step 5.
 
STEP 4. Recheck for DTC.
Check again if the DTC is set in ETACS-ECU.
(1) Erase the DTC.
(2) Press the electric motor switch to turn the power supply mode from "OFF" to "ON."
(3) Check if the DTC is set.
Is the DTC set?
Replace the power liftgate control unit.
A poor connection, open circuit or other intermittent malfunction in the CAN bus line between the power liftgate control unit and the ETACS-ECU (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).
 
STEP 5. Recheck for DTC.
Check again if the DTC is set in ETACS-ECU.
(1) Erase the DTC.
(2) Press the electric motor switch to turn the power supply mode from "OFF" to "ON."
(3) Check if the DTC is set.
Is the DTC set?
Replace the ETACS-ECU.
A poor connection, open circuit or other intermittent malfunction in the CAN bus line between the power liftgate control unit and the ETACS-ECU (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).