| Circuit Diagram |

Component Location 1. Auto light sensor 2. Head lamps 3. Lighting switch (Auto) 4. Tail lamps 5. IBU (Integrated Body Control Unit)
Description It's a system that uses illumination sensor to automatically turn ON the tail lamp and head lamp based on the change in surrounding environment's illumination condition.
Repair procedures Replacement 1. Remove the rear heater & A/C unit. (Refer to Rear Heater - "Rear Heater Unit") 2. Loosen the mounting screws, remove the rear heater & A/C unit cover (A) and evaporator core (B).
Inspection 1. Turn the ignition switch ON. 2. Manually operate the control switch and measure the voltage of the blower motor. 3. Select the control switch to raise the voltage until it reaches high speed.