AB/SRS Airbag — Short in Squib Circuit (Between D+ Wire Harness and D- Wire Harness), page 48

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Short in Squib Circuit (Between D+ Wire Harness and D- Wire Harness) — MK3 Supra SRS Airbag, page 48
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Page text (OCR transcript)
AB-48                                    SRS AIRBAG — Troubleshooting

Diag.Code | 13 | Short in Squib Circuit (Between D+ Wire Harness and D- Wire Harness)

CIRCUIT DESCRIPTION

The squib circuit consists of the center airbag sensor assembly, spiral cable and the steering wheel pad (squib). 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 AB-7. Diagnostic code 13 is recorded when a short is detected in the D+ wire harness and D- wire harness of the squib circuit.

Code. No. | Diagnosis

13 | · Short circuit between D+ wire harness and D- wire harness of squib.
    · Squib malfunction.
    · Spiral cable malfunction.
    · Center airbag sensor assembly malfunction.

DIAGNOSTIC CHART

1 | Preparation.

2 | Check squib circuit. | NG → Go to step 5 on next page.
   | OK

3 | Check center airbag sensor assembly. | NG → Replace center airbag sensor assembly.
   | OK

4 | Check squib. | NG → Replace steering wheel pad.
   | OK

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.