Mazda 6 manuals

Mazda 6 Service Manual: Vehicle speedometer sensor (vss) inspection

Mazda 6 Service Manual / Automatic transaxle / Automatic transaxle / Vehicle speedometer sensor (vss) inspection

Visual Inspection

1. Remove the VSS. (See VEHICLE SPEEDOMETER SENSOR (VSS) REMOVAL/INSTALLATION.)

2. Make sure that the sensor is free of any metallic shavings or particles.

3. Install the VSS. (See VEHICLE SPEEDOMETER SENSOR (VSS) REMOVAL/INSTALLATION.)

Wave profile Inspection

1. Remove the PCM. (See PCM REMOVAL/INSTALLATION.)

2. Connect WDS or equivalent to DLC connector.

3. Connect osilloscope test leads to the following PCM connector terminals.

4. Start the engine.

5. Monitor VSS PID.

6. Inspect wave profile.

- If wave profile or voltage are out of specifications, carry out the Open Circuit Inspection or Short Circuit Inspection


Power Supply Voltage Inspection

1. Disconnect the VSS connector.

2. Turn the ignition switch to ON.

3. Measure voltage at VSS connector terminal B (wiring harness side).

Specification
4.5-5.5 V


Open Circuit Inspection

Inspect the following circuit for open.

Short Circuit Inspection

Inspect the following circuit for short.


Sensor Rotor Inspection

1. Remove the VSS. (See VEHICLE SPEEDOMETER SENSOR (VSS) REMOVAL/INSTALLATION.)

2. Shift the selector lever to N position.

3. Inspect sensor rotor surface via VSS installation hole while rotating the front tire manually.

(1) Is sensor rotor free of damage and cracks?

(2) Is sensor rotor free of any metallic shavings or particles?

  • If sensor rotor is okay, replace the VSS.
  • If there is a problem, clean or replace the sensor rotor.
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Vehicle speedometer sensor (vss) removal/installation
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. If fo ...

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