[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
54 -CHASSIS ELECTRICAL > 54A-CHASSIS ELECTRICAL > RADIO AND CD PLAYER > DIAGNOSIS CODE PROCEDURES > CODE No.U0164 A/C-ECU CAN TIMEOUT
Code No.U0164 A/C CAN timeout
 
 
caution
  • If diagnosis code No. U0164 is set, be sure to diagnose the CAN bus line.
  • When replacing the radio and CD player, always check that the communication circuit is normal.
 
 
DIAGNOSTIC FUNCTION
If the signal from heater controller assembly (A/C-ECU) cannot be received, the radio and CD player sets diagnosis code No. U0164.
 
 
 
JUDGEMENT CRITERIA
With the statuses that the ignition switch is at "ON" position, system voltage is 10 - 16 V (data from ETACS-ECU), and there is no malfunction to the power supply fuse (IOD fuse), or odometer value is 80.5 km or more, if the communication with A/C-ECU cannot be established for 2,500 ms or more, the radio and CD player determines that a problem has occurred.
 
 
 
PROBABLE CAUSES
  • Malfunction of CAN bus line
  • Malfunction of heater controller assembly
  • Malfunction of radio and CD player
 
 
 
 
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-IIISE CAN bus diagnostics.
Use the M.U.T.-IIISE to diagnose the CAN bus lines.
Is the check result normal?
Go to Step 2.
Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting ).
 
STEP 2. M.U.T.-IIISE other system diagnosis code.
Check if diagnosis code is set in the A/C-ECU.
Is the diagnosis code set?
Troubleshoot the A/C-ECU (Refer to GROUP 55 - Troubleshooting ).
Go to Step 3.
 
STEP 3. Check the M.U.T.-IIISE Diagnosis code for other systems.
Check if diagnosis code No. U0164 is set in ETACS-ECU.
Is the diagnosis code set?
Go to Step 4.
Go to Step 5.
 
STEP 4. Diagnosis code recheck
Check again if the diagnosis code is set in the radio and CD player.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the "LOCK" (OFF) position to the "ON" position.
(3) Check if the diagnosis code is set.
Is the diagnosis code set?
Replace the heater controller assembly.
A poor connection, open circuit or other intermittent malfunction in the CAN bus line between the radio and CD player and the heater controller assembly (A/C-ECU). (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction .)
 
STEP 5. Check whether the diagnosis code is set again.
Check again if the diagnosis code is set in the radio and CD player.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the "LOCK" (OFF) position to the "ON" position.
(3) Check if diagnosis code is set.
Is the diagnosis code set?
Replace the radio and CD player.
A poor connection, open circuit or other intermittent malfunction in the CAN bus line between the radio and CD player and the heater controller assembly (A/C-ECU). (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction .)