Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Lexus >> 2009 >> LS 460L AWD >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning >> PTC Heater Assembly >> Inspection

PTC Heater Assembly: Inspection

  1. INSPECT PTC HEATER ASSEMBLY 
    1. Measure the resistance according to the value(s) in the table below.

    Standard resistance 

    RESISTANCE REFERENCE CHART

    Tester Connection Condition Specified Condition
    A-1 - B-1 23 to 25°C (73 to 77°F) 0.5 to 2.5 Ω
    A-2 - B-1 23 to 25°C (73 to 77°F) 0.5 to 2.5 Ω
    A-2 - B-2 23 to 25°C (73 to 77°F) 0.5 to 2.5 Ω
    A-3 - B-2 23 to 25°C (73 to 77°F) 0.5 to 2.5 Ω

    If the result is not as specified, replace the PTC heater assembly.

    Fig 1: Identifying PTC Heater Assembly Connector Terminals
    G04950671Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
scientia non olet · About Mike's Workshop Manuals