Code No. B1426:
Malfunction of G-sensor inside right side impact sensor
Code No. B1436: Malfunction
of G-sensor inside left side impact sensor
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If diagnosis code No. B1426
or B1436 is stored in the SRS-ECU, be sure to diagnose the CAN bus line.
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TROUBLE JUDGEMENT
- Analogue G-sensor for side impact does not operate.
- Characteristics of analogue G-sensor for side impact are abnormal.
- Output of analogue G-sensor for side impact is abnormal.
PROBABLE CAUSES
- Malfunction of right side impact sensor (with code No. B1426)
- Malfunction of left side impact sensor (with code No. B1436)
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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. Side impact sensor check
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(1)Check that the negative battery terminal is disconnected. If the negative battery
terminal is connected, disconnect it.
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(2)A side impact sensor is checked in the following way.
- Replace the right side impact sensor {In case of code No. B1426
(Regardless of "Active" or "Stored" faults)} with the new part.
- Replace the left side impact sensor {In case of code No. B1436 (Regardless
of "Active" or "Stored" faults)} with the new part.
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(3)Connect the negative battery terminal.
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(4)After erasing the diagnosis code memory, check the diagnosis code again.
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(5)Disconnect the negative battery terminal.
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Q.
Is diagnosis code No. B1426 or B1436 stored?
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Go to Step 3.
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The procedure is complete.
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(1)Check that the negative battery terminal is disconnected. If the negative battery
terminal is connected, disconnect it.
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(2)Replace the SRS-ECU with a new one.
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(3)Connect the negative battery terminal.
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(4)After erasing the diagnosis code memory, check the diagnosis code again.
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(5)Disconnect the negative battery terminal.
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Q.
Is diagnosis code No. B1426 or B1436 stored?
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Return to Step 1.
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The procedure is complete.
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