Code No.U0155
Meter CAN timeout
caution |
- If diagnosis
code No. U0155 is set, be sure to diagnose the CAN bus line.
- When replacing the ECU, always check that the communication circuit is normal.
|
DIAGNOSIS FUNCTION
If no signal from the combination meter can be received, KOS&OSS-ECU sets diagnosis
code No. U0155.
PROBABLE CAUSES
- Malfunction of CAN bus line
- Combination meter malfunction
- Malfunction of KOS&OSS-ECU
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III CAN bus diagnostics
Use M.U.T.-III to diagnose the CAN bus lines.
Q.
Is the check result normal?
Go to Step 2.
Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting
).
STEP 2. M.U.T.-III other system diagnosis code
Check if any diagnosis code is set in the combination meter.
Q.
Is the diagnosis code set?
Perform troubleshooting for the combination meter (Refer to GROUP 54A - Combination Meter - Troubleshooting
).
Go to Step 3.
STEP 3. M.U.T.-III other system diagnosis code
Check if diagnosis code No.U0155 is set in the engine-ECU.
Q.
Is the diagnosis code set?
Go to Step 4.
Go to Step 5.
STEP 4. Check whether the diagnosis code is set again.
Recheck if the diagnosis code is set in the KOS&OSS-ECU.
|
(1)Erase the diagnosis code.
|
|
(2)Turn the power supply mode of the engine switch from "OFF" to "ON".
|
|
(3)Check if the diagnosis code is set.
|
Q.
Is the diagnosis code set?
Replace the combination meter.
A poor connection, open circuit or other intermittent malfunction is present in
the CAN bus lines between the combination meter and the KOS&OSS-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.
Recheck if the diagnosis code is set.
|
(1)Erase the diagnosis code.
|
|
(2)Turn the power supply mode of the engine switch from "OFF" to "ON".
|
|
(3)Check if the diagnosis code is set.
|
Q.
Is the diagnosis code set?
Replace KOS&OSS-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 combination meter and the KOS&OSS-ECU (Refer to GROUP
00 - How to Use Troubleshooting/Inspection Service Points - How to
Cope with Intermittent Malfunction
).