| 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.
Inspection 1. Ignition "ON". 2. Turn on the head lamp switch. 3. Check that the aim of the head lamp changes smoothly when the head lamp leveling device switch is turned on. 4. If it does not operate well, check the connector and terminals to make sure that they are connected.
Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the head up display bezel (A). 3. Remove the instrument cluster. (Refer to Indicators And Guages - "Instrument Cluster") 4. Remove the head up display unit bracket (A) after loosening the mounting nuts.