LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2006 >> GS 300 AWD >> Repair and Diagnosis >> Transmission >> Transfer Case >> Transfer >> Four Wheel Drive Control System >> Data List / Active Test
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Data List / Active Test

HINT:

By accessing the DATA LIST displayed on the intelligent tester, you can perform such functions as reading the values of switches and sensors without removing any parts. Reading the DATA LIST is the first step in troubleshooting and is one method to shorten labor time.

  1. DATA LIST OF 4WD CONTROL ECU 
    1. Connect the intelligent tester to the DLC3.
    2. Turn the engine switch on (IG).
    3. Following the display on the intelligent tester, select "DATA LIST".
      DATA LIST

      Item Measurement Item/Range (Display) Normal Condition Diagnostic Note
      4WD WARN LAMP 4WD Indicator Light / OFF or ON OFF: 4WD indicator light off
      ON: 4WD indicator light on
      -
      SLIP INDI LAMP Slip Indicator Light / OFF or ON OFF: SLIP indicator light off
      ON: SLIP indicator light on
      -
      STOP LAMP SW Stop Light Switch / OFF or ON OFF: Brake pedal released
      ON: Brake pedal depressed
      -
      STEERING ANGLE Steering Angle Value / Min.: -3276.8 deg, Max.: 3276.7 deg Min.: -3276.8 deg
      Max.: 3276.7 deg
      -
      FR WHEEL SPD FR Wheel Speed / Min.: 0 mph (0 km/h), Max.: 202 mph (326.4 km/h) Min.: 0 mph (0 km/h), Max.: 202 mph (326.4 km/h) Almost no difference from the speedometer
      FL WHEEL SPD FL Wheel Speed / Min.: 0 mph (0 km/h), Max.: 202 mph (326.4 km/h) Min.: 0 mph (0 km/h), Max.: 202 mph (326.4 km/h) Almost no difference from the speedometer
      RR WHEEL SPD RR Wheel Speed / Min.: 0 mph (0 km/h), Max.: 202 mph (326.4 km/h) Min.: 0 mph (0 km/h), Max.: 202 mph (326.4 km/h) Almost no difference from the speedometer
      RL WHEEL SPD RL Wheel Speed / Min.: 0 mph (0 km/h), Max.: 202 mph (326.4 km/h) Min.: 0 mph (0 km/h), Max.: 202 mph (326.4 km/h) Almost no difference from the speedometer
      SLC CUR SLC Solenoid (transfer control solenoid) Current / Min.: 0 A Max.: 1 A Min.: 0 A
      Max.: 1 A
      -
      #DTC Number of DTCs / 0 to 255 0 to 255 -
  2. ACTIVE TEST OF 4WD CONTROL 

    HINT:

    Performing the ACTIVE TEST using the intelligent tester allows the relay, actuator, etc. 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 during the ACTIVE TEST.

    1. Connect the intelligent tester to the DLC3.
    2. Turn the engine switch on (IG).
    3. Following the display on the intelligent tester, select "ACTIVE TEST".
      ACTIVE TEST

      Item Vehicle Condition / Test Details Diagnostic Note
      4WD WARN LAMP 4WD Indicator Light ON / OFF
      ON: 4WD indicator light on
      OFF: 4WD indicator light off
      Observe multi-information display
      SLIP INDI LAMP SLIP Indicator Light / ON: SLIP indicator light on
      OFF: SLIP indicator light off
      Observe multi-information display