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.

Professional Workshop Service Manual & Technical Specifications

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

Specify the **applicable** lubrication requirements for the O-rings during AC system assembly? keyboard_arrow_down

Compressor oil ND-OIL 8 or equivalent is recommended for lubricating O-rings during AC system reassembly, ensuring a proper seal and component longevity.

What is the **exact** testing parameters for the defogger system continuity? keyboard_arrow_down

For defogger relay continuity, a constant connection between terminals 1 and 2 should show continuity, while applying B+ between terminals 1 and 2 should result in continuity between terminals 3 and 5.

Calculate the **specific** diagnostic procedures for the power window motor PTC operation? keyboard_arrow_down

For the front door PTC operation, disconnect the master switch and apply battery voltage to terminal 2 and the wire harness side connector's terminal 1; expect an operation noise within 4 to 90 seconds for normal function.

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Reviews (3)

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The detailed repair procedures helped me fix my AC without a hitch. Customer support was incredibly responsive when I had questions!
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Rated 4 out of 5 stars
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This manual made diagnosing my AC issues a breeze. The download was quick and hassle-free!