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.
Front Acceleration Sensor: Inspection
- INSPECT ACCELERATION SENSOR ASSEMBLY
- Connect 3 1.5 V dry batteries in series.
- Connect terminal 3 (SGB) to the batteries' positive (+) terminal, and terminal 2 (SGG) to the negative (-) terminal.
- Measure the voltage of the sensor.
Standard voltage
ACCELERATION SENSOR ASSEMBLYTester Connection Sensor Condition Specified Condition 1 (SGRR)-2 (SGND) Sensor stationary Approx. 2.25 V Sensor is tilted Change between approx. 0.9 to 2.3 V NOTE:- Do not apply a voltage of more than 6 V.
- Do not drop the acceleration sensor. If it is dropped, replace it with a new one.
- The acceleration sensor removed from the vehicle must not be placed upside down.
HINT:
When the acceleration sensor is tilted, it may output a different value.
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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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