TSRM/MK4 Supra/Repair Manual
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SRS/Supplemental Restraint System — Check D squib., page 77

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p.078
Check D squib. — MK4 Supra Supplemental Restraint System, page 77
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Page text (OCR transcript)
RS–77

SUPPLEMENTAL RESTRAINT SYSTEM – TROUBLESHOOTING

6  Check D squib.

Center Airbag
P squib          Sensor Assembly

D squib
         Spiral
         Cable

ACC    ON

or

DLC 1

                              Code 14
         E₁      Tc

DLC 2

   Tc      E₁

R05896
AB0118 AB0119
lel-23-1-A FI1391
S-17-1

P  (1) Turn ignition switch to LOCK.
   (2) Disconnect negative (–) terminal cable from the
       battery, and wait at least 90 seconds.
   (3) Connect steering wheel pad connector.
   (4) Connect negative (–) terminal cable to battery,
       and wait at least 2 seconds.

C  (1) Turn ignition switch to ACC or ON and wait at
       least 20 seconds.
   (2) Clear malfunction code stored in memory. (See
       page RS–47)
   (3) Turn ignition switch to LOCK, and wait at least
       20 seconds.
   (4) Turn ignition switch to ACC or ON, and wait at
       least 20 seconds.
   (5) Using SST, connect terminals Tc and E₁ of DLC1
       and DLC2.
       SST 09843–18020
   (6) Check diagnostic trouble code.

OK  Diagnostic trouble code 14 is not output.

Hint  Codes other than code 14 may be output at this
      time, but they are not relevant to this check.

OK

NG  Replace steering wheel pad.

From the results of the above inspection, the malfunctioning part can now be considered normal. To make
sure of this, use the simulation method to check.