Room light switch

WARNING: This page is about a different car, the 2017 Mazda CX-9. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Remove the front map light. (See FRONT MAP LIGHT REMOVAL/INSTALLATION .)
Verify that the continuity between the front map light terminals is as indicated in the table.

Fig 1: Front Map Light Terminals Continuity Chart - Room Light Switch
Courtesy of MAZDA MOTORS CORP.

Fig 2: Front Map Light Circuit Diagram - Room Light Switch
Courtesy of MAZDA MOTORS CORP.
- If not as indicated in the table, replace the front map light. (See FRONT MAP LIGHT REMOVAL/INSTALLATION .)
Operate the room light switch to the DOOR position and measure the resistance between the front map light terminals H and G.

Fig 3: Room Light Switch Circuit Diagram

Courtesy of MAZDA MOTORS CORP.

Room light switch resistance

Approx. 150 ohms
If not within the specification, replace the front map light. (See FRONT MAP LIGHT REMOVAL/INSTALLATION .)