Switch Inspection

WARNING: This page is about a different car, the 2018 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 TCS OFF switch. (See TCS OFF SWITCH REMOVAL/INSTALLATION .)
Verify that the resistance between the TCS OFF switch terminals D and E is as indicated in the table.
- If not as indicated in the table, replace the TCS OFF switch.

Fig 1: TCS OFF Switch Connector Terminals And Connector End View

Courtesy of MAZDA MOTORS CORP.