Code No. U0155 Meter CAN
timeout
caution |
- If the diagnosis
code No. U0155 is set, be sure to diagnose the CAN bus line.
- Before replacing the ECU, combination meter or sensor, ensure that the power supply circuit,
the earth circuit and the communication circuit are normal.
- When the illuminated licence plate is installed, the sensors may not operate because
of noise from the plate. (When the ultrasonic noise is received, the bass toned buzzer sound
continuously. When the ultrasonic noise stops, the normal operation will be resumed immediately.)
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DIAGNOSTIC FUNCTION
The corner sensor/back sensor-ECU sets diagnosis code No.U0155 when it cannot receive
signals from the combination meter.
JUDGEMENT CRITERIA
The corner sensor/back sensor-ECU cannot receive the signal from the combination meter
via the CAN bus line.
PROBABLE CAUSES
- Malfunction of CAN bus line
- Malfunction of combination meter
- Malfunction of corner sensor/back sensor-ECU
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 GROUP 54C - Troubleshooting - CAN
Bus Diagnosis Chart ).
STEP 2. M.U.T.-III other system diagnosis code
Check if diagnosis code is set to the combination meter.
Q.
Is the diagnosis code set?
Troubleshoot the combination meter. Refer to .
Go to Step 3.
STEP 3. Check the M.U.T.-III Diagnosis code for other systems
Check if the diagnosis code No. U0155 is set to ETACS-ECU.
Q.
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 to the corner sensor/back sensor-ECU.
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(1)Erase the diagnosis code.
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(2)Turn the ignition switch from the LOCK (OFF) position to the ON position.
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(3)Check if the diagnosis code is set.
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Q.
Is the diagnosis code set?
Replace the combination meter.
A poor connection, open circuit, or other intermittent malfunction in the CAN
bus line between the corner sensor/back sensor-ECU and the combination meter (Refer to GROUP
00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with
Intermittent Malfunction ).
STEP 5. Diagnosis code recheck
Check again if the diagnosis code is set to the corner sensor/back sensor-ECU.
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(1)Erase the diagnosis code.
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(2)Turn the ignition switch from the LOCK (OFF) position to the ON position.
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(3)Check if the diagnosis code is set.
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Q.
Is the diagnosis code set?
Replace the corner sensor/back sensor-ECU.
A poor connection, open circuit, or other intermittent malfunction in the CAN
bus line between the corner sensor/back sensor-ECU and the combination meter (Refer to GROUP
00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with
Intermittent Malfunction ).