Resistance Inspection

WARNING: This page is about a different car, the 2017 Mazda 3. 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 .)
Remove the following parts:
1. Front scuff plate (See FRONT SCUFF PLATE REMOVAL/INSTALLATION .)
2. Front side trim (See FRONT SIDE TRIM REMOVAL/INSTALLATION .)
3. Cluster switch (See CLUSTER SWITCH REMOVAL/INSTALLATION .)
Measure the resistance between cluster switch terminals B and C under the following conditions:
- Resistance with LDWS switch pressed and held
  - 187.61-191.39 ohms
- Resistance with any switches not pressed
  - 1, 139.99-1, 163.01 ohms
Fig 1: Circuit Diagram With LDWS Switch Pressed And Held
Courtesy of MAZDA MOTORS CORP.
- If not within the specification, replace the cluster switch.