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Home >> Toyota >> 2022 >> Avalon XLE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 65 (Air Conditioning System - Diagnostic Codes & Symptom Tests (Hybrid)) >> AIR CONDITIONING SYSTEM (for HV Model) >> Circuit Tests >> ECO Switch Circuit [04/2018 -] >> Description

ECO Switch Circuit [04/2018 -]: Description

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When the ECO switch assembly (electric parking brake switch assembly) is operated, the air conditioning amplifier assembly receives a signal and enables or disables ECO mode control of the air conditioning system.

Symptom Factor
When ECO switch assembly (electric parking brake switch assembly) is operated, blower speed does not change
  • Air conditioning amplifier assembly malfunction
  • ECO switch assembly (electric parking brake switch assembly) malfunction
  • Harness or connector