Code No.U0151 SRS-ABG CAN timeout
caution |
- If diagnosis code U0151 is set in the combination meter, always diagnose the CAN bus lines.
- Whenever the ECU is replaced, ensure that the communication circuit is normal.
|
TROUBLE JUDGEMENT
The combination meter sets diagnosis code No.U0151 when it cannot receive signals from the SRS-ECU.
JUDGEMENT CRITERIA
With the ignition switch is at ON position, diagnosis code No. U1190 is not set and diagnosis code No. U1195 is not set, if the communication with SRS-ECU cannot be established for 2500 ms or more, the combination meter determines that a problem has occurred.
PROBABLE CAUSES
- Malfunction of the combination meter
- Malfunction of the SRS-ECU
- Malfunction of wiring harness or connector
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
).
STEP 2. M.U.T.-III other system diagnosis code
Check that the SRS-ECU sets a diagnosis code.
Q.
Is the diagnosis code set?
Diagnose the SRS-ECU (Refer to GROUP 52B - Troubleshooting
).
Go to Step 3.
STEP 3. Check whether the diagnosis code is set again.
Check again if the diagnosis code is set in the combination meter.
|
(1)Erase the diagnosis code.
|
|
(2)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
|
|
(3)On completion, check that the diagnosis code is set again.
|
Q.
Is the diagnosis code set?
Replace the SRS-ECU (Refer to GROUP 52B - SRS-ECU
) and then go to Step 4.
A poor connection, open circuit or other intermittent malfunction is present in the CAN bus lines between the SRS-ECU and the combination meter (Refer to GROUP 00 - How to use troubleshooting/Inspection Service Points
).
STEP 4. Check whether the diagnosis code is set again.
Check again if the diagnosis code is set in the combination meter.
|
(1)Erase the diagnosis code.
|
|
(2)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
|
|
(3)On completion, check that the diagnosis code is set again.
|
Q.
Is the diagnosis code set?
Replace the combination meter (Refer to
) and then go to Step 5.
A poor connection, open circuit or other intermittent malfunction is present in the CAN bus lines between the SRS-ECU and the combination meter (Refer to GROUP 00 - How to use troubleshooting/Inspection Service Points
).
STEP 5. Check whether the diagnosis code is set again.
Recheck if the diagnosis code is set in the combination meter.
|
(1)Erase the diagnosis code.
|
|
(2)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
|
|
(3)On completion, check that the diagnosis code is set again.
|
Q.
Is the diagnosis code set?
Return to Step 1.
The procedure is complete.