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.
Primary Speed Sensor: Inspection
- Remove the instrument panel lower cover. Refer to REMOVAL .
- Set the probe of oscilloscope to TCM harness connector.
Connector & terminal
(B54) No. 6 (+) - No. 1 (-):
- Start and warm up the engine.
- Lift up the vehicle.CAUTION: Lift up the vehicle until the tire bottom is 0.3 m (0.98 ft) or more above the ground.
- Shift the select lever to "D" range.
- Check the waveform of primary speed sensor with engine idling running.
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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