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Mazda 3 Service Manual: Vehicle Speed Sensor (VSS) Inspection [FS5 A EL]

Mazda 3 Service Manual / Drivetrain / Sensors, Switches, Relays / Vehicle Speed Sensor (VSS) Inspection [FS5 A EL]

On-Vehicle Inspection

1. Inspect the power supply circuit for the VSS.

a. Remove the insulator from the transaxle.


b. Disconnect the VSS connector.


c. Switch the ignition to ON (engine off).

d. Measure the voltage at VSS connector terminal A (harness-side).


e. Switch the ignition to off.

f. Connect the VSS connector.

2. Inspect the GND circuit for the VSS.

a. Switch the ignition to off.

b. Measure the voltage at VSS connector terminal C (harness-side).


3. Inspect the signal circuit for the VSS.

a. Connect the oscilloscope to the following TCM connector terminals and set it as below.

b. Start the engine.

c. Measure the wave form when the following conditions are met.


Sensors, Switches, Relays
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Vehicle Speed Sensor (VSS) Removal/Installation [FS5 A EL]
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About this Owner Information
Document Applicability Owner information is updated regularly to reflect updates to your vehicle. However, in some cases, recently released features may not be described. To display information about recently released features, view the Release Notes on the touchscreen. Release Notes are disp ...

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