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Air Conditioning System (Diagnostics - Introduction): Other Lexus GS IV

CUSTOMIZE PARAMETERS [03/2012 - ]

  1. CUSTOMIZE AIR CONDITIONING SYSTEM HINT: The following items can be customized. NOTE: When the customer requests a change in a function, first make sure that the function can be customized. Be sure to make a note of the current settings before customizing. When troubleshooting a function, first make sure that the function is set to the default setting. Customizing with the Techstream Connect the Techstream. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Customize Setting /. Select the setting by referring to the table below. AIR CONDITIONER Tester Display Default Content Setting Relevant ECU Set Temperature Shift Normal Function to perform control with the shifted temperature versus the displayed temperature. -2C, -1C, Normal, +1C, +2C Air Conditioning Amplifier Assembly Compressor Mode Automatic Enables or disables the function which automatically turns the air conditioning on according to the state of the AUTO switch. Automatic or Manual Air Conditioning Amplifier Assembly Air Inlet Mode Automatic Enables or disables the function which automatically switches between recirculation and fresh air modes when the AUTO switch is on. Automatic or Manual Air Conditioning Amplifier Assembly Foot/DEF Auto Mode ON Function to turn the airflow from FOOT/DEF ON automatically when AUTO switch is on. ON or OFF Air Conditioning Amplifier Assembly Foot/DEF Automatic Blow Up Function ON Function to increase the blower level automatically when the defroster is on. ON or OFF Air Conditioning Amplifier Assembly Ambient Temperature Shift Normal Function to display shifted ambient temperature versus actual ambient temperature. -3C, -2C, -1C, Normal, +1C, +2C, +3C Air Conditioning Amplifier Assembly Emission Gas Sensor Shift Normal Function to change the sensitivity of the smog ventilation sensor. Much Less, Less, Little Less, Normal, Little More, More, Much More Air Conditioning Amplifier Assembly Add Foot Air in FACE Mode ON When the FACE mode is selected, an additional amount of air blown to the foot area. Selecting OFF will cancel this additional air flow. ON or OFF Air Conditioning Amplifier Assembly ECO MODE Cancel OFF Function to cancel the ECO mode drive when item is ON. ON or OFF Air Conditioning Amplifier Assembly Noise and Vibration Reduction OFF Function to change the speed of the compressor when item is ON. ON or OFF Air Conditioning Amplifier Assembly Refrigerant Shortage Check ON Function to cancel the refrigerant shortage check (check performed during normal operation) when item is OFF. ON or OFF Air Conditioning Amplifier Assembly Fan speed increment control Normal Function to define how fast the AC blower goes to target speed when first activating the air conditioning system. Slow, Normal, Fast Air Conditioning Amplifier Assembly Customizing using the multi-display (for 8 Inch) or accessory meter assembly (for 12.3 Inch) Turn the power switch on (IG). Enter the following menus: Setup / Vehicle / Vehicle Customization / Climate Settings /. Select the setting by referring to the table below: CLIMATE SETTINGS Display Default Content Setting Relevant ECU Smog Sensor Sensitivity 0 Changes the sensitivity of the exhaust gas sensor. -2, -1, 0, +1, +2 Air conditioning amplifier assembly Auto A/C Mode On Enables or disables the function which automatically turns the air conditioning on according to the state of the AUTO switch. On or Off Air conditioning amplifier assembly Efficient Ventilation Mode On Enables or disables the function which automatically switches between recirculation and fresh air modes when the AUTO switch is on. On or Off Air conditioning amplifier assembly

INITIALIZATION [03/2012 - ]

  1. INITIALIZATION SERVO MOTOR Turn the power switch off. Connect the Techstream to the DLC3. Turn the power switch on (IG). Press the blower OFF switch. Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Utility / Servomotor Initialization. According to the Techstream display, perform servo motor initialization. HINT: During initialization, the AUTO indicator light comes on, and then goes off when initialization has finished. According to the Techstream display, select the "Exit" switch to finish initialization.