Code No. B1519: SRS-ECU Connector Lock Out of Order
caution |
If diagnosis code B1519 is set in the SRS-ECU, always
diagnose the CAN main bus line.
|
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
|
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 54D, Diagnosis ).
|
|
|
|
STEP 2. Check whether the diagnosis code is reset.
|
|
Check again if the diagnosis code is
set.
|
|
(1)Erase the diagnosis code.
|
|
(2)Ignition: "LOCK" (OFF) position to "ON"
|
|
(3)On completion, check that the diagnosis code is not
reset.
|
|
Q.
Is the diagnosis code 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 D-23, D-24 and
D-25.
|
|
Q.
Are connectors correctly engaged?
|
|
Go to Step 4.
|
|
|
|
Engage the connectors correctly.
Then go to Step 5.
|
|
|
|
STEP 4. Connector check: SRS-ECU connector D-23, D-24 and
D-25.
|
|
(1)Disconnect the negative battery terminal.
|
|
(2)Disconnect SRS-ECU connectors D-23, D-24 and
D-25.
|
|
(3)Check the connector lock switch terminal
inside the harness side connector for improper contact or
deformation.
Q.
Are the SRS-ECU connector D-23, D-24 and D-25 in good condition?
Erase
the diagnosis code from 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 D-23, D-24 and D-25. Then go to Step 5.
|
|
STEP 5. Check whether the diagnosis code is reset.
|
|
Q.
Is diagnosis code B1519 set?
|
|
There
is no action to be taken.
|
|
|
|
The
procedure is complete (If no malfunctions are found in all steps, an
intermittent malfunction is suspected). Refer to GROUP 00, How to Cope with
Intermittent Malfunction .
|
|
|