Code No.B1519: SRS-ECU connector lock out of order
DIAGNOSIS CODE SET CONDITIONS
This diagnosis code is set if a poor connection at the SRS-ECU is detected.
PROBABLE CAUSES
- Damaged connectors
- Malfunction of the SRS-ECU
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STEP 1. M.U.T.-III CAN bus diagnostics
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Use M.U.T.-III to diagnose the CAN bus lines.
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Q.
Is the check result normal?
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 Go to Step 2.
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 Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting  ).
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STEP 2. Check whether the diagnosis code is set again.
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(1)Connect the negative battery terminal.
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(2)After erasing the diagnosis code memory, check the diagnosis code again.
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(3)Disconnect the negative battery terminal.
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Q.
Is diagnosis code B1519 set?
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Go to Step 3.
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The diagnosis is complete (diagnosis code No. B1519 is set due to improper engaged connector).
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STEP 3. Check at the SRS-ECU connector.
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(1)Disconnect the SRS-ECU connector.
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(2)Check the connector lock switch terminal inside the harness side connector for improper contact or deformation.
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Q.
Is the connector lock switch normal?
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Go to Step 4.
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Replace the connector.
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STEP 4. Check whether the diagnosis code is set again.
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Q.
Is diagnosis code No. B1519 set?
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Replace SRS-ECU (Refer to ).
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Intermittent Malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).
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