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DTC B1519: SRS-ECU connector lock out of order
 
 
cautionIf DTC B1519 is set in the SRS-ECU, always diagnose the CAN main bus line.
 
 
DTC SET CONDITIONS
This DTC is set if a poor connection at the SRS-ECU is detected.
 
 
PROBABLE CAUSES
  • Damaged connectors
  • Malfunction of the SRS-ECU
 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-IIISE), diagnose the CAN bus line.
(1)
cautionTo prevent damage to scan tool (M.U.T.-IIISE), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-IIISE).
Connect scan tool (M.U.T.-IIISE). Refer to "How to connect the scan tool ."
(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the CAN bus line found to be normal?
Go to Step 2.
Repair the CAN bus line (Refer to GROUP 54C, Diagnosis ).
 
STEP 2. Using scan tool (M.U.T.-IIISE), check whether the DTC is set again.
Check again if the DTC is set.
(1) Erase the diagnostic trouble code.
(2) Ignition: "LOCK" (OFF) position to "ON"
(3) On completion, check that the DTC is not set again.
Is the DTC set?
Go to Step 3.
There is an intermittent malfunction such as poor engaged connector(s) or open circuit (Refer to GROUP 00, How to Cope with Intermittent Malfunction ).
 
STEP 3. Connector check: SRS-ECU connector
Are connectors correctly engaged?
Go to Step 4.
Engage the connectors correctly.
 
STEP 4. Connector check: SRS-ECU harness side connector.
(1) Disconnect the negative battery terminal.
(2) Disconnect SRS-ECU harness side connectors.
(3) Check the connector lock switch terminal inside the harness side connector for improper contact or deformation.
Are the SRS-ECU harness side connector in good condition?
Erase the DTC from memory, and check the diagnostic trouble code. If DTC B1519 sets, replace the SRS-ECU (Refer to ).
Replace the SRS-ECU connector (Refer to ).