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Use the M.U.T.-III to diagnose the CAN bus
lines.
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Q.
Is the check result normal?
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Repair
the CAN bus line (Refer to GROUP 54F, Diagnosis ).
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Check again if the diagnosis code is
set.
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(1)Erase the diagnosis code.
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(2)Ignition: LOCK (OFF) position to ON
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(3)On completion, check that the diagnosis code is not
reset.
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Q.
Is the diagnosis code set?
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There
is an intermittent malfunction such as poor engaged connector(s) or open
circuit (Refer to GROUP 00, How to Cope with Intermittent Malfunction ).
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![](../../../img/52/AC313383AB00ENG.png)
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Q.
Are connectors correctly engaged?
Go to Step 4.
Engage the
connectors correctly. Then go to Step 5.
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![](../../../img/52/AC313383AB00ENG.png)
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(1)Disconnect SRS-ECU connectors C-118, C-119
and C-120.
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![](../../../img/52/AC301599AB00ENG.png)
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(2)Check the connector lock switch terminal
inside the harness side connector for improper contact or
deformation.
Q.
Are the SRS-ECU connector C-118, C-119 and C-120 in good condition?
Erase
the diagnosis code memory, and check the diagnosis code. If diagnosis code
B1519 sets, replace the SRS-ECU (Refer to ). Then go to Step 5.
Replace the
SRS-ECU connector C-118, C-119 and C-120. Then go to Step 5.
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Q.
Is diagnosis code B1519 set?
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There
is no action to be taken.
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The
procedure is complete (If no malfunctions are found in all steps, an
intermittent malfunction is suspected). Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points .
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