VEHICLE SPEED SENSOR (VSS) INSPECTION [AY6A-EL, AY6AX-EL]

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  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. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZI-3.7].)

3. Remove the TCM. (See TCM REMOVAL/INSTALLATION [AY6A-EL, AY6AX-EL].)

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

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  • If there is any malfunction, inspect the coupler component for continuity. (See COUPLER COMPONENT INSPECTION [AY6A-EL, AY6AX-EL].)
  • If the coupler component is normal, perform an off-vehicle inspection of VSS. (See Off-Vehicle Inspection.)

VSS specification

Terminal | Continuity
--- | ---
B19—GND | No continuity
B20—GND | No continuity

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

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  • If there is any malfunction, inspect the coupler component for continuity. (See COUPLER COMPONENT INSPECTION [AY6A-EL, AY6AX-EL].)
  • If the coupler component is normal, perform an off-vehicle inspection of VSS. (See Off-Vehicle Inspection.)

VSS specification

Terminal | Continuity
--- | ---
B19—B20 | Continuity

Off-Vehicle Inspection

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

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  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}).

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  • If there is any malfunction, replace the VSS.

VSS specification

Signal | Current (mA)
--- | ---
High | 12.0—16.0
Low | 4.0—8.0