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.
Test 13, Check PWR GND To EDIS Module
Turn key off. Disconnect ECA. Install EDIS diagnostic cable, and connect it to breakout box, EDIS module and coil pack. Do not connect VR sensor tee. Connect diagnostic cable negative lead to battery negative terminal, leaving positive lead disconnected. Set diagnostic cable box switch to 4/6 CYLINDER position. Set DVOM to 2-k/ohm scale. Measure resistance between breakout box pins No. J27 (PWR GND) and J7 (BAT -).
If resistance is less than 5 ohms, go to next test. If resistance is greater than 5 ohms, repair open circuit. Remove all test equipment, and reconnect all components. Check for fault codes. If vehicle still does not start, go to next test.
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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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