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.
Power Circuit Checks
Connect a voltmeter between ignition ECU pin No. 5 (Red wire on 240 Series or Brown wire on 740 and 940 Series) and ground. Voltmeter should indicate 12 volts. If voltage is not present, check wire from ignition ECU connector to in-line fuse located on left shock tower (240 Series) or check circuit between ignition ECU pin No. 5 and fuse box (740 and 940 Series).
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.