Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA1996T100 SR5, 4WD, STANDARDREPAIR AND DIAGNOSISRESTRAINTSAIR BAG, SRSAIR BAG RESTRAINT SYSTEMTESTING - DIAGNOSTICCODE 15
1996 Toyota T100 SR5, 4WD, Standard
Code 15
1996 Toyota T100 SR5, 4WD, StandardSECTION Code 15
- Disconnect negative battery cable. Wait at least 90 seconds. Remove steering wheel pad. See STEERING WHEEL PAD & SPIRAL CABLE under REMOVAL & INSTALLATION.
- Disconnect center air bag sensor connector. At center air bag sensor connector, measure resistance between terminals +SR and -SR, and between terminals +SL and -SL. See Figure. If resistance is not 755-885 ohms, go to step 7). If resistance is 755-885 ohms: Go to step 4)
- Reconnect negative battery cable. Turn ignition switch to ON position. Measure voltage between body ground and terminals +SR and +SL of center air bag sensor connector. If voltage is one volt or more, replace harness between center air bag sensor and front air bag sensor or repair front air bag sensor connector. If voltage is less than one volt, go to next step.
- Turn ignition switch to LOCK position. Disconnect negative battery cable. Reconnect center air bag sensor connector. Connect a jumper wire between terminals of spiral cable upper connector.
- Reconnect negative battery cable. Wait at least 2 seconds. Turn ignition switch to ACC or ON position. Wait at least 20 seconds. Clear codes. See CLEARING CODES under SELF-DIAGNOSTIC. Turn ignition switch to LOCK position. Wait at least 20 seconds. Turn ignition switch to ACC or ON position. Wait at least 20 seconds.
- Use Wiring Check Harness (09843-18020) to connect terminals Tc and E1 of DLC. See Figure. If CODE 15 is displayed, replace center air bag sensor. If CODE 15 is not displayed, system is functioning properly at this time. Check for intermittent fault. See AIR BAG WARNING LIGHT INTERMITTENT under DIAGNOSIS.
- Disconnect left front air bag sensor connector. At left front air bag sensor connector (connector half that leads to front air bag sensor), measure resistance between terminals +S and +A , +S and -S, and -S and -A . See Figure. Measured resistance should be as specified in table. See FRONT AIR BAG SENSOR RESISTANCE . Repeat procedure on right front air bag sensor. If resistances are not as specified, replace front air bag sensor.
- If resistances are okay, disconnect center air bag sensor connector. At center air bag sensor connector, connect a jumper wire between terminals +SR and -SR, and another jumper wire between terminals +SL and -SL.
- At front air bag sensor connector (connector half that leads to front air bag sensor), measure resistance between terminals +SR and -SR (right sensor), and between terminals +SL and -SL (left sensor).
- If resistance is less than one ohm, replace front air bag sensor connector. If resistance is one ohm or more, replace harness between center air bag sensor and front air bag sensor or repair front air bag sensor connector.
FRONT AIR BAG SENSOR RESISTANCE
| Model | Terminals | Resistance (Ohms) |
|---|---|---|
| T100 | +S - -A | Less Than 1 |
| * | +S - -S | Greater Than 1,000,000 |
| * | +S - -A | 755 - 855 |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.