caution | If diagnosis code B1423 is set in the SRS-ECU, always diagnose the CAN bus lines. |
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?
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Go to Step 2 |
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Repair the CAN bus lines (Refer to GROUP 54D, Diagnosis-Can Bus Diagnostic Chart ). |
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STEP 2. Recheck for diagnosis code. |
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?
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Go to Step 3. |
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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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STEP 3. Check the side-airbag module (RH). |
(1)Disconnect the negative battery terminal. |
(2)Disconnect the side-airbag module (RH) connector E-127 (Refer to GROUP 52A, Front Seat Assembly ). |
STEP 4. Check the side-airbag module (RH) circuit. Voltage measurement at the SRS-ECU connector D-23. |
(1)Disconnect the negative battery terminal. |
(2)Disconnect SRS-ECU connector D-23. |
(3)
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(4)
(5)Connect the negative battery terminal. (6)Turn the ignition switch to the "ON" position. (7)
OK: 1 V or less Q.
Is the check result normal?Go to Step 5.Repair the harness wires between SRS-ECU connector D-23 (terminal No.57 and 58) and side-airbag module (RH) connector E-127 (terminal No.2 and 1). |
STEP 5. Check whether the diagnosis code is reset. |
Q.
Is diagnosis code B1423 set?
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Replace the SRS-ECU (Refer to ). |
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An intermittent malfunction is suspected (Refer to GROUP 00, How to Cope with Intermittent Malfunction ). |
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