VEHICLE SPEED SENSOR (VSS) INSPECTION [FN4A-EL]
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Visual Inspection
1. Remove the VSS. (See VEHICLE SPEED SENSOR (VSS) REMOVAL/INSTALLATION [FN4A-EL].)
2. Make sure that the sensor is free of any metallic shavings or particles.
3. Install the VSS. (See VEHICLE SPEED SENSOR (VSS) REMOVAL/INSTALLATION [FN4A-EL].)
Wave profile Inspection
1. Remove the PCM. (See PCM REMOVAL/INSTALLATION [ZY].)
2. Connect WDS or equivalent to DLC-2.
3. Connect oscilloscope test leads to the following PCM connector terminals.
4. Start the engine.
5. Monitor VSS PID.
6. Inspect wave profile.
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Power Supply Voltage Inspection
1. Disconnect the VSS connector.
2. Turn the ignition switch to ON.
3. Measure voltage at VSS connector terminal A (wiring harness side).
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Open Circuit Inspection
1. Inspect the following circuit for open.
Short Circuit Inspection
1. Inspect the following circuit for short.
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Sensor Rotor Inspection
1. Remove the VSS. (See VEHICLE SPEED SENSOR (VSS) REMOVAL/INSTALLATION [FN4A-EL].)
2. Shift the selector lever to N position.
3. Inspect sensor rotor surface via VSS installation hole while rotating the front tire manually.