TSRM/MK3 Supra/Repair Manual
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AB/SRS Airbag — Diag.Code 41 Malfunction Stored in Memory, page 73

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p.074
Diag.Code 41 Malfunction Stored in Memory — MK3 Supra SRS Airbag, page 73
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Page text (OCR transcript)
SRS AIRBAG - Troubleshooting                                                AB-73

Diag.Code    41    Malfunction Stored in Memory

CIRCUIT DESCRIPTION

If a malfunction occurs in the airbag system, malfunction codes 11 to 31 may be output, and when the battery is disconnected after the malfunction is repaired, malfunction codes 11 to 31 will be cleared, but code 41 will be output instead.

So long as the cancellation operation for a malfunction stored in memory (See page AB-31) is not performed, code 41 is stored in the center airbag sensor assembly and the airbag warning light remains lit up.

Code No.                          Diagnosis

41        · Malfunction recorded in memory.
          · Center airbag sensor assembly malfunction.

DIAGNOSTIC CHART

1    Check operation of airbag warning light.    OK → System is normal.
                    ↓
                   NG

2    Is diagnostic code 41 output again?    YES → Check harness between ECU-B
                    ↓                            fuse and center airbag sensor
                   NO                             assembly. If normal, replace
                                                  center airbag sensor assembly.
     Perform troubleshooting according to
     malfunction code output.

WIRING DIAGRAM

                                                  Center Airbag Sensor Assembly
                    ┌─────────────┐
                    │             │              +B ─┬─►├
                    │   ECU-B     ├────────►
        ┌───────────┤             │     Airbag Warning Light
        │           └─────────────┘
        │
    Engine
     Fuse  ├┤ ALT
   Link Box ├┘
        │
     Battery ├┤+
             │
            ═╧═

                                                                            AB0163