| Circuit Diagram |

Signal Waveform
Inspection 1. Turn the ignition switch OFF. 2. Disconnect the HO2S connector. 3. Measure resistance between the HO2S terminals 1 and 2. 4.
Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the photo & auto light sensor. (Refer to Windshield Wiper/Washer - "Rain Sensor") Installation 1. Install the auto light sensor. 2. Connect the negative (-) battery terminal.
Inspection 1. Check the condenser fins for clogging and damage. If they are clogged, clean them with water, and blow them with compressed air. If they are bent, gently bend them using a screwdriver or pliers. 2. Check the condenser connections for leakage, and repair or replace it, if required.