With Manufacturer's Scan Tool

Erasing the DTC
1. Turn the ignition switch OFF.
2. Short the SCS line to body ground.
3. Turn the ignition switch ON (II). (at this point, the AFS indicator comes on for 2 seconds and initializing for 1.5 seconds.)
4. Within 3 seconds after the indicator turns off, push and hold the AFS switch.
5. Within 3 seconds after the indicator comes on, release the switch.
6. Within 3 seconds after the indicator turns off, push the switch one time.
7. Make sure the indicator blink 2 times. If the indicator does not blink, repeat from the step 1.