LDWS Switch Inspection

WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
Remove the LDWS switch. (See LDWS SWITCH REMOVAL/INSTALLATION .)
Verify that the resistance between LDWS switches B and C is as indicated in the chart.

Fig 1: LDWS Switch - Circuit Diagram
Courtesy of MAZDA MOTORS CORP.
- If the resistance cannot be verified as indicated in the chart, replace the cluster switch.
Apply battery positive voltage to LDWS switch terminal J, and connect terminal I to ground.

Fig 2: Applying Battery Positive Voltage To LDWS Switch Terminal J
Courtesy of MAZDA MOTORS CORP.
Verify that the LED illuminates.
- If there is any malfunction, replace the cluster switch.