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.
Ground Circuits
Ground circuits for PCM are located at PCM terminals No. 24, 25, 33, 76, 77 and 103. PCM is located in right rear of engine compartment. To check PCM ground circuits, check for continuity between ground and PCM ground terminals. See TEST EQUIPMENT in PIN VOLTAGE/PID VALUE CHARTS article for equipment to be used. If continuity does not exist, locate and repair open in ground circuit as necessary. See appropriate wiring diagram in WIRING DIAGRAMS article.
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.
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