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.
Cold Start Injector Time Switch
Disconnect switch connector. Note terminal identification. See Fig 1. Using ohmmeter, check resistance between terminals "STA" & "STJ" at appropriate temperature. See COLD START INJECTOR TIME SWITCH SPECIFICATIONS table. Check resistance between terminal "STA" and ground. Replace switch if not within specification.
| Condition | Resistance - Ohms | |
|---|---|---|
| 3S-FE | ||
| Below 86°F (30°C) | 20-40 | |
| Above 104°F (40°C) | 40-60 | |
| To Ground | 20-80 | |
| 2VZ-FE | ||
| Below 59°F (15°C) | 25-45 | |
| Above 86°F (30°C) | 65-85 | |
| To Ground | 25-85 | |
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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.
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