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.
Starter Switch Signal: 2.5TL
Backprobing, measure voltage between PCM 26-pin connector terminal No. 26 (Brown/Black wire) and the PCM 16-pin connector terminal No. 5 (Blue/Red wire) with ignition switch in START position. See Figure. If battery voltage is present, starter signal is okay. If battery voltage is not present, inspect STARTER SIGNAL fuse No. 9 (7.5-amp), located in underdash fuse/relay box. If fuse is okay, repair open in Blue/Red wire between PCM 16-pin connector and STARTER SIGNAL fuse No. 9. If fuse is blown, repair short in Blue/Red wire between PCM 16-pin connector and STARTER SIGNAL fuse No. 9 or PGM-FI main relay. Replace STARTER SIGNAL fuse No. 9.
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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.