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Home >> Lexus >> 2000 >> ES 300 >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Automatic A/C-Heater Systems >> System Tests >> Accessory Power Circuit

Accessory Power Circuit

  1. Turn ignition on. Inspect HEATER fuse, located under left side of instrument panel. If fuse is okay, go to next step. If fuse is blown, correct cause and replace fuse.
  2. Turn ignition off. Remove ashtray. Remove A/C control assembly, leaving harness connectors connected. Turn ignition on. Backprobe A/C control assembly connector between ground and terminal A14-26 (Blue/Black wire). See Figure. If battery voltage does not exist, repair Blue/Black wire between connector and HEATER fuse.
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