LDWS Switch Inspection

WARNING: This page is about a different car, the 2014 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

The LDWS switch is integrated with the cluster switch.
For the LDWS switch removal/installation, refer to CLUSTER SWITCH REMOVAL/INSTALLATION . (See CLUSTER SWITCH REMOVAL/INSTALLATION .)

Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5] .)
Remove the LDWS switch. (See LOWS SWITCH REMOVAL/INSTALLATION .)
Verify that the resistance between LDWS switches B and C is as indicated in the table.

Fig 1: LDWS Switches - Circuit Diagram
Courtesy of MAZDA MOTORS CORP.
- If the resistance cannot be verified as indicated in the table, replace the cluster switch.
Apply battery positive voltage to LDWS switch terminal J, and connect terminal I to ground.
Verify that the LED illuminates.
- If there is any malfunction, replace the cluster switch.
  
  Fig 2: Applying Battery Positive Voltage To LDWS Switch Terminal
  Courtesy of MAZDA MOTORS CORP.