VEHICLE SPEED SENSOR (VSS) INSPECTION [AY6A-EL]

CAUTION:
- Water or foreign objects entering the connector can cause a poor connection or corrosion. Be sure not to drop water or foreign objects on the connector when disconnecting it.
- Do not damage the terminals.

On-Vehicle Inspection

1. Disconnect the negative battery cable.

2. Remove the fresh-air duct and air cleaner component as a single unit. Service and Repair

3. Remove the TCM. Service and Repair

4. Measure the no continuity between coupler component terminals B19 and GND, B20 and GND.

- If there is any malfunction, inspect the coupler component for continuity. Testing and Inspection
- If the coupler component is normal, perform an off-vehicle inspection of VSS.

VSS specification

5. Measure the continuity between coupler component terminals B19 and B20.

Off-Vehicle Inspection

1. Connect the VSS terminal 2 to the battery positive terminal, connect the battery negative terminal to VSS terminal 1 through an ammeter set to a resistance of 100 ohm.

NOTE:
- Inspect with a tester that can indicate more than 10 megohms and confirm that the value is more than 1 megohm.

2. Measure the current while waving a magnet back and forth over the top of the VSS (less than 5 mm {0.2 in}).

- If there is any malfunction, replace the VSS.

VSS specification

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.

Safety Warning

Vehicle Speed Sensor: Testing and Inspection

Use the Manual With the Right Hardware

When to See a Mechanic

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