Air Conditioning System - Data List / Active Test
Connect the intelligent tester to the DLC3.
Air Conditioning System - Check Mode Procedure
By operating each of the A/C control switches as shown in the diagram below, it is possible to enter the diagnostic check mode.
Air Conditioning System - Dtc Check / Clear
Start the engine and warm it up.
Air Conditioning System - Diagnosis System
Check the DLC3.
The vehicle's ECM uses the ISO 9141-2 (Euro-OBD) / ISO 14230 (M-OBD) communication protocol. The terminal arrangement of DLC3 complies with ISO 15031-3 and matches the ISO 9141-2 / ISO 14230 format.
Air Conditioning System - Terminals Of Ecu
*1: Except 2AD-FHV
*2: For 2AD-FHV
*2: For 2AD-FHV
Air Conditioning System - Problem Symptoms Table
Lexus IS250 IS220d GSE20 ALE20 AIR CONDITIONING
Air Conditioning System - Customize Parameters
Lexus IS250 IS220d GSE20 ALE20 AIR CONDITIONING
Air Conditioning System - How To Proceed With Troubleshooting
Inspect the battery voltage.
- Standard voltage:
- 11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding.
Air Conditioning System - System Description
The air conditioning system has the following controls:
*1: Models with a 4GR-FSE
*2: Except 2AD-FHV
*1: Models with a 4GR-FSE
*2: Except 2AD-FHV
Air Conditioning System - System Diagram
Lexus IS250 IS220d GSE20 ALE20 AIR CONDITIONING