Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Data List / Active Test

DATA LIST / ACTIVE TEST

DATA LIST

HINT:

Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

NOTICE:

In the following table, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Air Conditioner / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Air Conditioner > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

FR Seat Heater Temperature

Front seat RH side seat heater temperature

-29.7°C to 59.55°C

Within range from 35 to 42°C (95 to 108°F)

Front seat heater is on

FL Seat Heater Temperature

Front seat LH side seat heater temperature

-29.7°C to 59.55°C

Within range from 35 to 42°C (95 to 108°F)

Front seat heater is on

RR Seat Heater Temperature

Rear seat RH side seat heater temperature

-29.7°C to 59.55°C

Within range from 35 to 42°C (95 to 108°F)

Rear seat heater is on

RL Seat Heater Temperature

Rear seat LH side seat heater temperature

-29.7°C to 59.55°C

Within range from 35 to 42°C (95 to 108°F)

Rear seat heater is on

Number of Trouble Codes

Number of trouble codes

0 to 255

Number of DTCs will be displayed

-

    Dtc Check / Clear
    DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Air Conditioner / T ...

    Lost Communication with Rear Panel LIN (B14B3)
    DESCRIPTION The refreshing seat switch (for rear side)*1 or rear seat heater switch*2 communicates with the air conditioning amplifier assembly via LIN communication. If the LIN communication system i ...

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