With Bluetooth System

Switch the ignition OFF (LOCK).
Disconnect the negative battery cable and wait for 1 min or more.
Remove the driver-side air bag module. (See DRIVER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM] .) (See DRIVER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .)
Disconnect the clock spring connector.
Verify the resistance between the clock spring connector terminals.

Fig 1: Identifying Clock Spring Connector Terminals
- If not within the specification, replace the steering switch.
  
  Fig 2: Clock Spring Connector Terminals Resistance Chart
Apply battery positive voltage to clock spring connector terminal 4O (with standard deployment control system) /5O (with two-step deployment control system), and connect terminal 4E (with standard deployment control system) /5E (with two-step deployment control system) to ground.

Fig 3: Applying Battery Positive Voltage To Clock Spring Connector Terminal 4O/5O And Connect Terminal 4E/5E To Ground
Verify that the LED illuminates.
- If the LED does not illuminate, replace the steering switch.