LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2004 >> ES 330 >> Repair and Diagnosis >> External Pages >> Different car >> Section 307 (Air Conditioning System - Diagnostics) >> Air Conditioning System >> IG Power Source Circuit >> Inspection Procedure
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Inspection Procedure

WARNING: This page is about a different car, the 2005 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FUSE (HTR) 
    1. Remove the HTR fuse from the driver side J/B.
    2. Check for the continuity of HTR fuse.
    1. NG: REPLACE FUSE 
    2. OK: GO TO NEXT STEP 
  2. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - BATTERY) 
    1. Remove the A/C amplifier with connectors being connected.
    2. Turn the ignition switch to the "ON" position.
    3. Measure the voltage between terminal IG of A/C amplifier and body ground.

      Standard: 10 to 14 V 

    Fig 1: Checking Harness & Connector (Air Conditioning Amplifier - Battery)
    G02629548Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  
scientia non olet · About LEMON Manuals