ACTIVE TORQUE CONTROL 4WD SYSTEM DATA LIST / ACTIVE TEST

Tech Tips

Using the intelligent tester 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.

Note

In the table below, 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.


  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".

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      4WD Warning Light

      Master Warning Light and Multi-information Display/

      OFF or ON

      OFF: Master warning light and Multi-information display off

      ON: Master warning light and Multi-information display on

      		 -
      Stop Light SW

      Stop Light Switch /

      OFF or ON

      OFF: Brake pedal released

      ON: Brake pedal depressed

      		 -
      Forward and Rearward G

      Deceleration sensor (Forward and Rearward G) /

      Min.: -25.10 m/s2

      Max.: 24.90 m/s2

      		Approximately 0 +/-0.13 while stationary -
      FR Wheel Speed

      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 Speed

      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 Speed

      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 Speed

      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 Solenoid Current

      SLC Solenoid (transfer control solenoid) Current /

      Min.: 0 A

      Max.: 3 A

      Min.: 0 A

      Max.: 3 A

      		 -
      Number of DTC

      Number of DTCs /

      0 to 255

      		 0 to 255 -

  2. ACTIVE TEST OF 4WD CONTROL

    Tech Tips

    Using the intelligent tester to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.


    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".

      Tester Display Test Part Control Range Diagnostic Note
      4WD Warning Light Master Warning Light and Multi-information Display

      ON: Master warning light and Multi-information display on

      OFF: Master warning light and Multi-information display off

      		 Observe combination meter