Steering Switch Inspection

WARNING: This page is about a different car, the 2018 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

Handling the driver-side air bag module improperly can accidentally operate (deploy) the air bag module, which may seriously injure you. Read the service warnings and cautions before handling the air bag module. (See AIR BAG SYSTEM SERVICE WARNINGS [TWO-STEP DEPLOYMENT CONTROL SYSTEM - US/CANADA SPEC.] .) (See AIR BAG SYSTEM SERVICE CAUTIONS [TWO-STEP DEPLOYMENT CONTROL SYSTEM - US/CANADA SPEC.] .)

Switch the ignition OFF (LOCK).
Disconnect the negative battery terminal and wait for 1 min or more. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Remove the driver-side air bag module. (See DRIVER-SIDE AIR BAG MODULE REMOVAL [TWO-STEP DEPLOYMENT CONTROL SYSTEM - US/CANADA SPEC.] .) (See DRIVER-SIDE AIR BAG MODULE INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM - US/CANADA SPEC.] .)
Remove the steering wheel. (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION .)
Verify that the resistance and continuity between the steering switch terminals is as indicated in the table.

Fig 1: Steering Switch Circuit Diagram
Courtesy of MAZDA MOTORS CORP.
- If not as indicated in the table, replace the steering switch. (See STEERING SWITCH REMOVAL/INSTALLATION .)
Fig 2: Steering Switch Terminals Resistance Chart (1 Of 3)
Courtesy of MAZDA MOTORS CORP.

Fig 3: Steering Switch Terminals Resistance Chart (2 Of 3)
Courtesy of MAZDA MOTORS CORP.

Fig 4: Steering Switch Terminals Resistance Chart (3 Of 3)
Courtesy of MAZDA MOTORS CORP.
Apply battery positive voltage to steering switch terminal F, and connect terminal B to ground.

Fig 5: Applying Battery Positive Voltage To Steering Switch Terminal F
Courtesy of MAZDA MOTORS CORP.
Verify that the LED illuminates.
- If the LED does not illuminate, replace the steering switch. (See STEERING SWITCH REMOVAL/INSTALLATION .)