Description of On-Board Diagnostics

General Troubleshooting Information

Self-diagnostic Function
The self-diagnostic function of the adaptive front lighting control system detects system problems. This information can be retrieved by displaying DTCs with the AFS indicator.

Displaying the DTC (use only if the HDS is unavailable)
1. Turn the ignition switch OFF.
2. Short the SCS line to body ground.
3. Turn the ignition switch ON (II). (In this point, the AFS indicator comes on for 2 seconds.)
4. Within 3 seconds after the indicator turns off, push the AFS OFF switch three times.
5. Within 6 seconds after the indicator turns off, the indicator starts to indicate the DTCs.
- If there is a DTC, the indicator starts to blink.
- If there is no DTCs, the indicator comes on and stays on.

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.