LIN Communication System (Diagnostics - Introduction): Overview Lexus GX J150

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1. DOOR BUS LINES
2. CERTIFICATION ECU LINES
3. AIR CONDITIONING BUS LINES
4. WINDSHIELD WIPER BUS LINES
5. LIGHTING BUS LINES (w/ Adaptive Front-lighting System)
6. MULTI-TERRAIN MONITOR BUS LINES

SYSTEM DESCRIPTION

1. LIN COMMUNICATION SYSTEM DESCRIPTION The LIN communication system is used for communication between the components in the tables below. If communication cannot be performed through LIN communication because of a break in the communication lines or some other reason, the master control ECU of the relevant system stores DTCs. Refer to the table below about the communication bus lines and connected components. HINT: Each component has a fail-safe function which activates to maintain the minimum performance of the system and protect the system. In the following table, "o" indicates that the function applies, and "-" indicates that it does not. DOOR BUS LINES Component Master Control LIN Communication DTC Output Function Main body ECU (multiplex network body ECU) o o Multiplex network master switch assembly - - Front power window regulator motor assembly LH - - Front power window regulator motor assembly RH - - Rear power window regulator motor assembly LH - - Rear power window regulator motor assembly RH - - Sliding roof drive gear sub-assembly - - CERTIFICATION BUS LINES Component Master Control LIN Communication DTC Output Function Certification ECU o o Power management control ECU - o Steering lock actuator assembly (steering lock ECU) - - ID code box - - LIGHTING BUS LINES (W/ ADAPTIVE FRONT-LIGHTING SYSTEM) Component Master Control LIN Communication DTC Output Function Headlight swivel ECU assembly (AFS ECU) o o Headlight reflector LH (headlight swivel motor LH) - - Headlight leveling motor LH - - Headlight reflector RH (headlight swivel motor RH) - - Headlight leveling motor RH - - Inner rear view mirror assembly (automatic high beam sensor) - - AIR CONDITIONING BUS LINES Component Master Control LIN Communication DTC Output Function Air conditioning amplifier assembly o - Heater control switch board*1 - - No. 2 air conditioning control assembly*2 - - *1: w/o Navigation System *2: w/ Rear Air Conditioning System WINDSHIELD WIPER BUS LINES Component Master Control LIN Communication DTC Output Function Windshield wiper switch assembly o - Rain sensor - - MULTI-TERRAIN MONITOR BUS LINES Component Master Control LIN Communication DTC Output Function Driving support switch control ECU o o Combination meter assembly - - Accessory meter assembly* - - *: w/o Navigation System