Code No.U0155
Meter CAN Timeout
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- If diagnosis
code No. U0155 is set, be sure to diagnose the CAN bus line.
- Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.
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TROUBLE JUDGEMENT
If signal from the combination meter cannot be received for 2500 milliseconds or more,
the gateway-ECU sets diagnosis code No. U0155.
PROBABLE CAUSES
- Malfunction of the combination meter
- Malfunction of the gateway-ECU
- Malfunction of the CAN bus
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III CAN bus diagnostics
Use the 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 
). Repair the
CN bus line and go to Step 6.
STEP 2. Check the M.U.T.-III Diagnosis code for other systems
Check that the combination meter set a diagnosis code.
Q.
Is the diagnosis code set?
Diagnose the combination meter (Refer to GROUP 54A - Combination Meter, Troubleshooting).
Go to Step 3.
STEP 3. Check the M.U.T.-III Diagnosis code for other systems
Check if diagnosis code No. U1108 is set in ETACS-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.
Check again if the diagnosis code is set in the gateway-ECU.
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(1)Erase the diagnosis code.
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(2)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
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(3)On completion, check that the diagnosis code is set again.
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Q.
Is the diagnosis code set?
Replace the combination meter (Refer to GROUP 54A - Combination Meter),
and then go to Step 6.
A poor connection, open circuit or other intermittent malfunction is present in
the CAN bus lines between the combination meter and the gateway-ECU (Refer to GROUP 00, How
to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent
Malfunctions).
STEP 5. Check whether the diagnosis code is set again.
Check again if the diagnosis code is set in the gateway-ECU.
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(1)Erase the diagnosis code.
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(2)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
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(3)On completion, check that the diagnosis code is not set again.
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Q.
Is the diagnosis code set?
Replace the gateway-ECU (Refer to ), and then
go to Step 6.
A poor connection, open circuit or other intermittent malfunction is present in
the CAN bus lines between the combination meter and the gateway-ECU (Refer to GROUP 00, How
to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent
Malfunctions).
STEP 6. Check whether the diagnosis code is set again.
Recheck if the diagnosis code is set in the gateway-ECU.
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(1)Erase the diagnosis code.
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(2)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
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(3)On completion, check that the diagnosis code is set again.
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Q.
Is the diagnosis code set?
Return to Step 1.
The procedure is complete.