Circuit Description

When diagnosis switch terminal is shorted or connected to the ground with ignition switch ON, DTC is indicated by flashing of 2WD/4WD indicator only in the following cases.

• Normal DTC is indicated if no malfunction DTC is detected in the 4WD control module.
• A history malfunction DTC is indicated by flashing of the 4WD indicator if a current malfunction DTC is not detected at that point although a history malfunction DTC is stored in memory.