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Home >> Toyota >> 2012 >> Highlander Hybrid >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning (Automatic) (Diagnostic Codes & Circuit Tests) (Hybrid) >> AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System) >> DTC B1497/97: BUS IC Communication Malfunction >> Description

DTC B1497/97: BUS IC Communication Malfunction: Description

The air conditioning harness connects the air conditioning amplifier and the servos. The air conditioning amplifier supplies power and sends operation instructions to each servo through a communication / driver IC and wiring assembly called the air conditioning harness. Each servo sends damper position information to the air conditioning amplifier.

DTC No. DTC Detection Condition Trouble Area
B1497/97 Communication line error or open
  • Air conditioning harness
  • Air conditioning amplifier
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