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.
Pinpoint Test B4: Circuit Short/VAPS Check
Leave VAPS control module disconnected. Disconnect battery. Set VOM on 200-k/ohm scale. Measure resistance between Yellow/Blue wire in VAPS control module connector and chassis ground. Measure resistance between Yellow/Blue wire and Black/Green wire. If resistance is greater than 10 k/ohms, proceed to PINPOINT TEST Q1 -PINPOINT TEST Q7 . If resistance is NOT as specified, repair Yellow/Blue wire between coil and control module for short to ground.
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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.