Lexus IS250 · Service Manual BODY ELECTRICAL

DATA LIST / ACTIVE TEST

System information


DATA LIST
According to the Data List displayed by the intelligent tester, you can read the values of the switches, sensors, actuators and so on without parts removal. Reading the Data List as the first step of troubleshooting is one method to shorten work time.

  1. Warm up the engine.

  2. Turn the ignition switch off.

  3. C123647E01
    Connect the intelligent tester to the DLC3.

  4. Engine switch on (IG).

  5. Enter following menus: Diagnosis / Body / Combination Meter / Data List.

    Combination Meter 
    ITEM
    		 Measurement Item/Range (Display)
    		 Normal Condition
    		 Diagnostic Note
    Vehicle Speed Meter
    		 Vehicle speed/Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph)
    		 Almost same as actual vehicle speed (When driving)
    		 -
    Fuel Input
    		 Fuel input signal Min.: 0, Max. 255
    		 Fuel gauge indicates (F): 35
    		 -
    Fuel gauge indicates (3/4): 85
    		 -
    Fuel gauge indicates (1/2): 145
    		 -
    Fuel gauge indicates (1/4): 186
    		 -
    Fuel gauge indicates (E): 205
    		 -
    Light Control Rheostat
    		 Light Control Rheostat/Min.: 0, Max.: 255
    		 Light control rheostat switch is Dark (0) → Bright (255)
    		 -
    ODO/TRIP Change Switch
    		 ODO/TRIP switch is ON/OFF
    		 ON: Switch is pushed
    OFF: Switch is released
    		 -
    Trip Rest Switch
    		 TRIP/RESET switch is ON/OFF
    		 ON: Switch is pushed
    OFF: Switch is released
    		 -
    Tail Cancel Switch
    		 TAIL CANCEL switch is ON/OFF
    		 ON: Switch is pushed
    OFF: Switch is released
    		 -

    HINT:
    The tail cancel switch is used to cancel the link between taillight operation and dimming of the combination of the combination meter.

    ABS/VSC/TRC 
    ITEM
    		 Measurement Item/Range (Display)
    		 Normal Condition
    		 Diagnostic Note
    FR/FL/RR/RL Wheel Speed
    		 Vehicle speed/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    		 Almost same as actual vehicle speed (When driving)
    		 -
    Vehicle Speed
    		 Vehicle speed/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    		 Almost same as actual vehicle speed (When driving)
    		 -
    Shift Lever Position
    		 A/T shift position P/R/N/D/B
    		 Same as actual shift position
    		 -
    Parking Brake SW
    		 Parking brake switch is ON/OFF
    		 ON: Parking brake is on
    OFF: Parking brake is released
    		 -
    Engine 
    ITEM
    		 Measurement Item/Range (Display)
    		 Normal Condition
    		 Diagnostic Note
    Vehicle Spd
    		 Vehicle speed/Min.: -256 km/h (-159 mph), Max.: 254 km/h (158 mph)
    		 Almost same as actual vehicle speed (When driving)
    		 -
    Engine Coolant Temp
    		 Coolant temperature/Min.: -40°C (-40°F), Max.: 140°C (284°F)
    		 After warming up: 80 to 95°C (176 to 203°F)
    		 If the value is "-40°C (-40°F) or "140°C (284°F), sensor circuit is open or shorted.


ACTIVE TEST
Performing the Active Test using the intelligent tester allows the meters, indicators and so on to operate without parts removal. Performing the Active Test as the first step of troubleshooting is one way to shorten labor time.
It is possible to display the Data List on the intelligent tester during the Active Test.

  1. C123647E01
    Connect the intelligent tester to the DLC3.

  2. Engine switch on (IG).

  3. Enter following menus: Diagnosis / Body / Combination Meter / Active Test.

    Combination Meter 
    Item
    		 Test Details
    		 Diagnostic Note
    Speed Meter Operation
    		 0, 40 (24), 80 (48), 120 (72), 160 (96), 200 (120) km/h (mph)
    		 -
    Tacho Meter Operation
    		 0, 1,000, 2,000, 3,000, 4,000, 5,000, 6,000, 7,000 (rpm)
    		-
    Fuel Meter Operation
    		 EMPTY, 1/2, FULL
    		 -
    Water Temperature Meter Operation
    		 LOW, NORMAL, HIGH
    		 -
    A/T Indicator Operation (*1)
    		 P, R, N, D, 4, 3, 2, L indicator light (OFF/ON)
    		 -
    Indicat. Lamp Brake
    		 BRAKE warning light (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Indicat. Lamp Charge
    		 CHARGE warning light (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Indicat. Lamp D-seat Belt
    		 D-SEAT BELT indicator light (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Indicat. Lamp P-seat Belt
    		 P-SEAT BELT indicator light (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Indicat. Lamp Door
    		 DOOR warning light (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Indicat. Lamp Fuel
    		 FUEL warning light (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Indicat. Lamp ECT PWR (*1)
    		 ECT PWR indicator light (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Indicat. Lamp ECT SNOW (*1)
    		 ECT SNOW indicator light (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Indicat. Lamp Cruise
    		 CRUISE indicator light (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Indicat. Lamp Tail
    		 TAIL indicator light (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Indicat. Lamp Fr FOG
    		 Fr FOG indicator light (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Indicat. Lamp Rr FOG
    		 Rr FOG indicator light (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Indicat. Lamp Beam
    		 BEAM indicator light (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Indicat. Lamp Airbag
    		 AIRBAG indicator light (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Indicat. Lamp Slip
    		 SLIP indicator light (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Indicat. Lamp ABS
    		 ABS indicator light (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Indicat. ODO/TRIP Display
    		 ODO/TRIP display (OFF/BLINK or ON)
    		 Confirm that the vehicle is stopped, engine idling
    Key Remained Buzzer
    		 Key reminder buzzer (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Light Remained Buzzer
    		 Light reminder warning buzzer (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Sports Shift Reject Buzzer (*1)
    		 Sports shift reject buzzer (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Warning Buzzer
    		 Warning buzzer (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Indicat. Clearance Sonar LCD (*2)
    		 All the LCD for clearance sonar in the multi-display (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    A/T Indicator Operation (*1)
    		 A/T 6, 5, 4, 3, 2, L indicator light (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Indicat. AFS (*3)
    		 AFS OFF indicator light (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Indicat. EPS (*4)
    		 EPS indicator light (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Indicat. ECB
    		 ECB indicator light (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Master Warning
    		 MASTER WARNING light (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Multi-Display
    		 All the dot in the multi-information display (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Indicat. PRECRASH (*5)
    		 PRECRASH indicator light (OFF/ON)
    		 Confirm that the vehicle is stopped, engine idling
    Integrated J/B 
    Item
    		 Test Details
    		 Diagnostic Note
    Dimmer Signal
    		 Auto dimmer signal (OFF/ON)
    		 -
    *1: for Automatic Transmission
    *2: with Clearance Sonar System
    *3: with Intelligent AFS
    *4: with Power Tilt and Power Telescopic
    *5: with Pre-crash Safety System

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