Mazda 2: Vehicle Speed Sensor (VSS)
VEHICLE SPEED SENSOR (VSS) INSPECTION
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.
On-Vehicle Inspection
1. Inspect the power supply circuit for the VSS.
- Disconnect the VSS connector.

- Switch the ignition to ON.
- Measure the voltage at VSS connector terminal A (harness side).

- If there is any malfunction, repair wiring harness between VSS
and main relay.
VSS specification
- Switch the ignition to off.
- Connect the VSS connector.
2. Inspect the GND circuit for the VSS.
- Switch the ignition to off.
- Measure the voltage at VSS connector terminal C (harness side).

- If there is any malfunction, repair wiring harness between VSS
and GND.
VSS specification
3. Inspect the signal circuit for the VSS.
- Connect the oscilloscope to the following PCM connector terminals and
set it as
below.
- (+) lead: PCM terminal 1AX
- (-) lead: negative battery terminal (-)
- Oscilloscope setting: 1 V/DIV (Y), 2 ms/DIV (X), DC range
- Start the engine.
- Measure the wave form when the following conditions are met.
- Vehicle speed: 30 km/h {19 mph}
- Gear position: 3 GR

- If there is any malfunction, replace the VSS. (See VEHICLE SPEED SENSOR
(VSS) REMOVAL/INSTALLATION).
VEHICLE SPEED 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 foreign materials are stuck to the VSS, disturbance by magnetic flux
can cause
sensor output to be abnormal and thereby negatively affect control. Make
sure that
foreign materials such as iron filings are not stuck to the VSS during
installation.
1. Disconnect the negative battery cable.
2. Remove in the order indicated in the table.
3. Install in the reverse order of removal.

- Connector
- VSS
- O-ring
READ NEXT:
SOLENOID VALVE INSPECTION
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
PCM INSPECTION
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
disconnecti
DRIVE PLATE REMOVAL/INSTALLATION
1. Remove the transaxle. (See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION).
2. Remove in the order indicated in the table.
3. Install in the reverse order of removal.
SEE MORE:
In severe collisions such as those described previously in "SRS Air Bag
Deployment
Criteria", the applicable SRS air bag equipment will deploy. However, in some
accidents,
the equipment may not deploy depending on the type of collision and its
severity.
Limitations to front/near f
Spare tyre and tools are stored in the locations illustrated in the diagram.
*1 The jack point attachment can be used by vehicle repair shops and road
assistance services.
Consult an Authorised Mazda Repairer for details.
Hatchback
Without spare tyre
Jack *
NOTE
Your vehicle may
© 2016-2023 Copyright www.ma2auto.com
