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HOMESERVICE MANUALSLEXUS2009ES 350 V6-3.5L (2GR-FE)REPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSAIR CONDITIONING SYSTEMHEATER CONTROL PANEL POWER SOURCE CIRCUIT
2009 Lexus ES 350 V6-3.5L (2GR-FE)

Heater Control Panel Power Source Circuit

2009 Lexus ES 350 V6-3.5L (2GR-FE)SECTION Heater Control Panel Power Source Circuit







AIR CONDITIONING SYSTEM: Heater Control Panel Power Source Circuit

Heater Control Panel Power Source Circuit

DESCRIPTION

Battery voltage is supplied to the A/C control assembly through the A/C fuse and A/C No. 2 fuse.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (IG+, +B - BODY GROUND)




(a) Disconnect the connector from the A/C control assembly.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (GND - BODY GROUND)




(a) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.