Sensor Output Value Inspection

CAUTION:

Resistance inspection using other testers may cause damage to the ABS wheel-speed sensor internal circuit. Be sure to use the M-MDS or equivalent to inspect the ABS wheel-speed sensor.

Turn the ignition switch off.
Connect the M-MDS or equivalent to the DLC-2.

Fig 1: Locating DLC-2 Connector
Courtesy of MAZDA MOTORS CORP.
Select the following PIDs using the M-MDS or equivalent:
- LF_WSPD
  (LF wheel-speed sensor)
- RF_WSPD
  (RF wheel-speed sensor)
Start the engine and drive the vehicle.
Verify that the display of the M-MDS or equivalent shows the same value as the speedometer.
- If there is any malfunction, replace the front ABS wheel-speed sensor.