[Previous][Next]
DTC U0245: NAVI/DISP. AUDIO CAN timeout
 
 
caution
  • If DTC U0245 is set, be sure to diagnose the CAN bus line.
  • When replacing the ECU, always check that the communication circuit is normal.
 
 
DIAGNOSTIC FUNCTION
If no signal from multivision display can be received, KOS-ECU stores DTC U0245.
 
 
DTC SET CONDITION
Check Conditions
  • When all the following conditions are met.
    1. Electric motor switch: ON
    2. ETACS-ECU system voltage is at 10 to 16 V.
Judgment Criterion
  • After the following condition is met, 2,500 ms or more have elapsed.
    1. CAN signal from multivision display cannot be received.
 
 
TROUBLESHOOTING HINTS
  • Malfunction of the CAN bus line
  • Multivision display malfunction
  • Malfunction of multivision display power supply circuit
  • Error in option coding setting of ETACS-ECU (replacement with the navigation unit not compatible with CAN communication)
  • Malfunction of KOS-ECU
 
 
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 the power supply mode of the electric motor switch to the OFF before connecting or disconnecting scan tool (M.U.T.-IIISE).
Connect scan tool (M.U.T.-IIISE). Refer to "How to connect scan tool (M.U.T.-IIISE) ."
(2) Turn the power supply mode of the electric motor switch to ON.
(3) Diagnose the CAN bus line.
(4) Turn the power supply mode of the electric motor switch to OFF.
Is the CAN bus line found to be normal?
Go to Step 2.
Repair the CAN bus line (Refer to GROUP 54C, Diagnosis ).
 
STEP 2. Using scan tool (M.U.T.-IIISE), read the other system diagnostic trouble code.
Check if the DTC is set in the multivision display.
(1)
cautionTo prevent damage to scan tool (M.U.T.-IIISE), always turn the power supply mode of the electric motor switch to the OFF before connecting or disconnecting scan tool (M.U.T.-IIISE).
Connect scan tool (M.U.T.-IIISE). Refer to "How to connect scan tool (M.U.T.-IIISE) ."
(2) Erase the DTC.
(3) Turn the power supply mode of the electric motor switch to ON.
(4) Check if DTC is set.
(5) Turn the power supply mode of the electric motor switch to OFF.
Is the DTC set?
Perform troubleshooting for the multivision display (Refer to GROUP 54A, Smartphone Link Display Audio - Diagnosis ).
Go to Step 3.
 
STEP 3. Using scan tool (M.U.T.-IIISE), read the other system diagnostic trouble code.
Check if the DTC U245 is set in the combination meter.
(1)
cautionTo prevent damage to scan tool (M.U.T.-IIISE), always turn the power supply mode of the electric motor switch to the OFF before connecting or disconnecting scan tool (M.U.T.-IIISE).
Connect scan tool (M.U.T.-IIISE). Refer to "How to connect scan tool (M.U.T.-IIISE) ."
(2) Turn the power supply mode of the electric motor switch to ON.
(3) Check if DTC is set.
(4) Turn the power supply mode of the electric motor switch to OFF.
Is the DTC set?
Go to Step 4.
Go to Step 5.
 
STEP 4. Recheck for diagnostic trouble code.
Check again if the DTC is set in the KOS-ECU.
(1) Erase the DTC.
(2) Turn the power supply mode of the electric motor switch from OFF to ON.
(3) Check if DTC is set.
(4) Turn the power supply mode of the electric motor switch from ON to OFF.
Is the DTC set?
Replace the multivision display (Refer to GROUP 54A, Smartphone Link Display Audio - Smartphone link display audio ).
A poor connection, open circuit or other intermittent malfunction is present in the CAN bus lines between the multivision display and the KOS-ECU (Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
 
STEP 5. Recheck for diagnostic trouble code.
Check again if the DTC is set in the KOS-ECU.
(1) Erase the DTC.
(2) Turn the power supply mode of the electric motor switch from OFF to ON.
(3) Check if DTC is set.
(4) Turn the power supply mode of the electric motor switch from ON to OFF.
Is the DTC set?
Replace KOS-ECU and register the ID codes (Refer to ).
A poor connection, open circuit or other intermittent malfunction is present in the CAN bus lines between the multivision display and the KOS-ECU (Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).