Back-Up Light 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 .)
Remove the front under cover No. 2. (See FRONT UNDER COVER No. 2 REMOVAL/INSTALLATION .)
Remove the back-up light switch. (See BACK-UP LIGHT SWITCH REMOVAL/INSTALLATION [C66M-R] .)
Verify that the continuity between the back-up light switch terminals is as indicated in the chart.

Fig 1: Checking Continuity Between Back-Up Light Switch Terminals

Courtesy of MAZDA MOTORS CORP.

Fig 2: Back-Up Light Switch Terminals Continuity Chart

Courtesy of MAZDA MOTORS CORP.

If not as indicated in the chart, replace the back-up light switch.