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.
Sensor Power Supply2 Circuit: Description
ECM supplies a voltage of 5 V to some of the sensors systematically divided into 2 groups, respectively. Accordingly, when a short circuit develops in a sensor power source, a malfunction may occur simultaneously in the sensors belonging to the same group as the short-circuited sensor.
Sensor power supply 1
- CMP sensor (PHASE) (bank 1)
- Exhaust valve timing control position sensor (bank 1)
- Manifold absolute pressure (MAP) sensor
- Engine oil pressure sensor
Sensor power supply 2
- CKP sensor (POS)
- Mass air flow sensor (bank 1) (bank 2)
- Battery current sensor
- CMP sensor (PHASE) (bank 2)
- Exhaust valve timing control position sensor (bank 2)
- Refrigerant pressure sensor
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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.