TSRM/MK4 Supra/Repair Manual
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p.065

SRS/Supplemental Restraint System — Dtc 13 Short in D Squib Circuit (Between D+ Wire Harness and D− Wire Harness), page 66

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p.067
Dtc 13 Short in D Squib Circuit (Between D+ Wire Harness and D− Wire Harness) — MK4 Supra Supplemental Restraint System, page 66
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Page text (OCR transcript)
RS–66
SUPPLEMENTAL RESTRAINT SYSTEM – TROUBLESHOOTING

DTC 13 Short in D Squib Circuit (Between D+ Wire Harness and D−
Wire Harness)

CIRCUIT DESCRIPTION

The D squib circuit consists of the center airbag sensor assembly, spiral cable and steering wheel pad.
It causes the airbag to deploy when the airbag deployment conditions are satisfied.
For details of the function of each component, see FUNCTION OF COMPONENTS on page RS–4.
Diagnostic trouble code 13 is recorded when a short is detected in the D+ wire harness and D− wire harness
of the squib circuit.

DTC No. | Diagnosis

13
• Short circuit between D+ wire harness and D− wire harness of squib.
• D squib malfunction.
• Spiral cable malfunction.
• Center airbag sensor assembly malfunction.

WIRING DIAGRAM

Center Airbag
Sensor Assembly

Power
Source

Airbag Squib: D squib
(Steering Wheel Pad)

1          Y          3
                    D+
Spiral
Cable
              L          4
2                      D−

Safing
Sensor

To Front
Airbag
Sensor

R07091