1997-2001 Lexus GS 300, GS 400 Air Conditioning System Service Manual

Comprehensive service data for Lexus GS 300/400 models covering AC system components, procedures, and troubleshooting. Publication C4085-91017.

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Lexus Car manual preview - 1997-2001 Lexus GS 300, GS 400 Air Conditioning System Service Manual
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Document Details

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Document Number / Seller:
25326 / Harold Robinson
File Size:
98.58 MB
File Type:
ZIP
Language:
English
Pages:
5000+
Printable:
Yes
Category:
Car
Last updated / verified
Jun 24, 2025

Models Covered & Key Technical Specifications

Lexus GS 300 / GS 400 (JT8BD68S1V0035262) – 1997-2001 Air Conditioning System Manual | Automotive Suite.

  • Measured Interference Fit: 10 N-m is specified as the torque for compressor mounting fasteners Requirements.
  • Established Circuit Specs: For diagnostic purposes, 4.1 N-m is measured at the expansion valve connections Threshold.
  • Factory Climate Parameters: 100 degrees C controls the fan speed for high-temperature operation Mapping.
  • Approved Physical Specs: The compressor requires 26 N-m for the rear mounting bolts Configuration.
  • Reference Coupling Torques: 52 N-m -- signifies the torque for the compressor bracket Benchmarks.
  • Critical End Play: The drive belt tensioner governs the proper belt tension Range.

Manual Description & Preview

Applied Maintenance Air Conditioning System Manual: Lexus GS 300/400 manual Parts-Reference

Coverage-Scope: AC System components, Diagnostics, and Repair Procedures // Coverage-Scope: Car / Lexus AC Logic // Coverage-Scope: System procedures and specifications.

Performance-Element System-Path Calibration-Standards
Compressor and Magnetic Clutch Refrigerant Line Torque specifications up to 72 N-m.
Condenser Air Conditioning Unit Mounting torque up to 12.3 N-m.
Evaporator Components O-ring lubrication for assembly.
Heater Radiator Air Conditioning Unit Components Bolt torque of 4.1 N-m specified.
Blower Motor Defogger System Wiring harness inspection.
Expansion Valve Sensor and Actuator Control Diagnostic procedures for various sensors.

OEM specifications cover the entire air conditioning system. This manual details component locations, removal, installation, and inspection procedures. It includes diagrams for the compressor, condenser, evaporator, and other AC system parts. Specific torque values are provided for most connections to ensure Proper assembly and system integrity. The manual also outlines troubleshooting steps and diagnostic checks for common issues.

Torque specifications are documented for various components to ensure proper vibration dampening and system integrity.

FAQ

Which specific document version and publication reference identifies this 1997-2001 Lexus GS 300 and GS 400 Air Conditioning System Service Manual? keyboard_arrow_down

Publication is identified as the 2000 Lexus GS300/GS400 RM718U service manual.

Are wiring diagrams and connector pinout references included for the climate control systems within this manual? keyboard_arrow_down

Manual includes component location diagrams for sensors, relays, and servomotors to assist with identifying electrical connections. Detailed descriptions of the air conditioning system and control components are provided in the relevant sections.

Is there a breakdown diagram for the A/C unit and heater radiator components? keyboard_arrow_down

Document contains exploded views illustrating the assembly of the A/C unit, heater radiator, and associated ducting.

What kind of specification tables are provided regarding refrigerant charging and fastener tightening? keyboard_arrow_down

Manual lists specified refrigerant amounts and torque values for various hose, tube, and compressor connections in dedicated tables. These sections summarize technical data for the refrigeration system components.

Does the manual cover chapter scope for major air conditioning systems like the compressor, evaporator, and drive belt assembly? keyboard_arrow_down

Document includes comprehensive chapters covering the inspection and component breakdown for the refrigeration lines, evaporator, and heater unit. It also features specific sections detailing the on-vehicle inspection and configuration of the drive belt for both GS 300 and GS 400 models. Each section provides references to parts and operational parameters for these major systems.

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