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.
1985 Toyota MR2FACTORY OEM SERVICE PROCEDURE
IGNITOR Module Test
- Turn ignition on. Connect voltmeter negative lead to ground and positive lead to ignition coil positive terminal. Refer to Fig 1. Voltage reading should be 12 volts.
- With negative lead still attached to ground, connect voltmeter positive lead to ignition coil negative terminal. Refer to Fig 1. Voltage reading should be 12 volts. Unplug wiring harness connector from distributor.
- Using a 1.5-volt dry cell battery, connect battery positive pole to Pink wire terminal. See Fig 1. Connect battery negative pole to White wire terminal. DO NOT apply voltage for more than 5 seconds.
- Voltage at coil negative terminal should be as indicated in IGNITOR TEST VOLTAGE SPECIFICATIONS table. If not, replace ignitor.
IGNITOR TEST VOLTAGE SPECIFICATIONS
| Application | Volts |
|---|---|
| MR2 | 7-10 |
| Celica | 5-8 |
Factory Service Tools
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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.