Code No.U0151
SRS-ABG CAN timeout
caution |
- If diagnosis
code No. U0151 is set, be sure to diagnose the CAN bus line.
- When replacing the ECU, always check that the communication circuit is normal.
|
DIAGNOSTIC FUNCTION
If the signal from SRS-ECU cannot be received, the combination meter sets diagnosis
code No. U0151.
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 CAN bus line
- Malfunction of the SRS-ECU
- Malfunction of the combination meter
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
).
Repair the CAN bus line and go to Step 5.
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.
|
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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.
|
Q.
Is the diagnosis code set?
Replace the 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.
|
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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.
|
Q.
Is the diagnosis code set?
Replace the combination meter. 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.
|
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(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.