CHECK FOR INTERMITTENT PROBLEMS HINT: Inspect the vehicle ECM using check mode. Intermittent problems are easier to detect with the Techstream when the ECM is in check mode. In check mode, the ECM uses 1 trip detection logic, which is more sensitive to malfunctions than normal mode (default), which uses 2 trip detection logic.
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Toyota Avalon Service & Repair Manual > Front Evaporator Temperature Sensor: Components
COMPONENTS ILLUSTRATION *A for A25A-FXS - - *1 AIR CONDITIONING HARNESS ASSEMBLY *2 COOLER EXPANSION VALVE *3 COOLING UNIT PARTS *4 HEATER CLAMP *5 HEATER PIPE GROMMET *6 HEATER RADIATOR UNIT SUB-ASSEMBLY *7 NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY *8 NO. 1 COOLER EVAPORATOR SUB-ASS ...