DIFFERENTIAL SYSTEM DATA LIST / ACTIVE TEST

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.

Tech Tips

Using the GTS 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.


  1. DATA LIST OF 4 WHEEL DRIVE CONTROL ECU


    1. Turn the ignition switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the GTS on.

    5. Enter the following menus: Powertrains / Four Wheel Drive / Data List.

    6. According to the display on the GTS, read the Data List.


      Powertrain > Four Wheel Drive > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      FR Wheel Speed Front wheel speed sensor RH reading

      Min.: 0.00 km/h (0.00 mph)

      Max.: 327.67 km/h (203.61 mph)

      		 Vehicle stopped: 0.00 km/h (0.00 mph) No large fluctuations when driving at a constant speed.
      FL Wheel Speed Front wheel speed sensor LH reading

      Min.: 0.00 km/h (0.00 mph)

      Max.: 327.67 km/h (203.61 mph)

      		 Vehicle stopped: 0.00 km/h (0.00 mph) No large fluctuations when driving at a constant speed.
      RR Wheel Speed Rear wheel speed sensor RH reading

      Min.: 0.00 km/h (0.00 mph)

      Max.: 327.67 km/h (203.61 mph)

      		 Vehicle stopped: 0.00 km/h (0.00 mph) No large fluctuations when driving at a constant speed.
      RL Wheel Speed Rear wheel speed sensor LH reading

      Min.: 0.00 km/h (0.00 mph)

      Max.: 327.67 km/h (203.61 mph)

      		 Vehicle stopped: 0.00 km/h (0.00 mph) No large fluctuations when driving at a constant speed.
      Vehicle Speed Maximum wheel speed sensor reading

      Min.: 0.00 km/h (0.00 mph)

      Max.: 327.67 km/h (203.61 mph)

      		 Vehicle stopped: 0.00 km/h (0.00 mph) No large fluctuations when driving at a constant speed.
      Rear Differential Lock Control SW (R) Differential lock switch status (differential lock switch input signal of R terminal on ECU side) ON or OFF

      ON: Switch pressed and held

      OFF: Switch not pressed

      		 -
      Rear Differential Lock Detection SW (SLS) Rear differential lock position switch (No. 1 transfer indicator switch) status (rear differential lock position switch (No. 1 transfer indicator switch) input signal of SLS terminal on ECU side) ON or OFF

      ON: Rear differential locked condition

      OFF: Rear differential free condition

      		 -
      IG SW Ignition switch status ON or OFF ON: Ignition switch ON -
      Rear Differential Lock Solenoid Target Current Differential lock coil drive circuit target current value

      Min.: 0.0 A

      Max.: 25.5 A

      Rear differential locked: 1.0 to 8.0 A

      Rear differential free: 0.1 A or less

      		 -
      Rear Differential Lock Solenoid Actual Current Differential lock coil drive circuit actual current value

      Min.: 0.0 A

      Max.: 25.5 A

      Rear differential locked: 1.0 to 8.0 A

      Rear differential free: 0.1 A or less

      		 -
      Motor Energization Status Signal Motor power signal status ON or OFF

      ON: Power supplied to motor

      OFF: Power not supplied to motor

      		 -
      C/C Cancel Request Cruise control cancellation signal status ON or OFF

      ON: Cruise control cancellation requested

      OFF: Cruise control cancellation not requested

      		 -
      Rear Differential Lock Status Signal Rear differential LOCK status signal ON or OFF

      ON: Rear differential locked condition

      OFF: Rear differential free condition

      		 -
      Buzzer Request Buzzer sounding request NO Sound, Sound(3 times) or Sound

      • NO Sound: Does not sound

      • Sound(3 times): Sounds 3 times

      • Sound: Sounds intermittently

      • Sounds 3 times: Sounds 3 times at 0.5 second intervals (0.5 seconds on and 0.5 seconds off)

      • Sounds intermittently: 0.5 second intervals (0.5 seconds on and 0.5 seconds off)
      Rear Differential Lock Indicator Request Rear differential lock indicator light request Blink4*, Blink3, Blink2, Blink1, ON or OFF

      • Blink3: Indicator light rapidly blinks

      • Blink2: Indicator light blinks 3 times

      • Blink1: Indicator light blinks

      • ON: Indicator light illuminates

      • OFF: Indicator light turns off

      • Blinking: 0.5 second intervals (0.5 seconds on and 0.5 seconds off)

      • Rapidly blinking: 0.25 second intervals (0.25 seconds on and 0.25 seconds off)

      *: Item not supported, therefore not displayed
      Rear Differential Lock Solenoid Energization Request Differential lock coil power command ON or OFF

      ON: Power supplied to differential lock coil

      OFF: Power not supplied to differential lock coil

      		 -
      IG Voltage IG monitor voltage

      Min.: 0.0 V

      Max.: 25.5 V

      		 11 to 14 V: Ignition switch ON -
      Rear Differential Lock Solenoid Voltage Differential lock coil drive circuit monitor voltage

      Min.: 0.0 V

      Max.: 25.5 V

      Rear differential locked: Higher than 3.5 V

      Rear differential free: 3.5 V or less

      		 -
      Rear Differential Lock Solenoid Duty Differential lock coil drive circuit duty

      Min.: 0%

      Max.: 255%

      Rear differential locked: 0 to 100%

      Rear differential free: 0%

      		 -
      Mode Status Mode transition condition Initial Control, Particular Control at Start-Up, Shift Settling Control at Start-Up, H2, H2->H4L(T/F Activating), H2->H4L(ADD Activating), H4L->H2(T/F Activating), H4L->H2(ADD Activating), H4L, H4L->L4L, L4L->H4L, L4L Rr Diff. Free, H4F->L4F, L4F->H4F, H4F, H4F->H4L, H4L->H4F, L4F, L4L Rr Diff. Free->Lock, L4L Rr Diff. Lock->Free, L4L Rr Diff. Lock, K1, K2, K3, K4, K5, K6, K7, K8, K9, K10, S01, S02, S03, S04, S05, S06, S07, S08, S09, S10, S11, S12, S13, S14, S15, S16, S17, S18, S19, S20, S21, S22, S23, S24, B1, B2, B3, B4, B5, B6, 2WD Rr Diff. Free, 2WD Rr Diff. Free->Lock, 2WD Rr Diff. Lock->Free or 2WD Rr Diff. Lock Displays transfer shift actuator, A.D.D. actuator and differential lock coil transition condition

      Tech Tips


      • K1 to K10: Control while switching prohibited

      • S01 to S24: Control while switching limited

      • B1 to B6: Control while switching again
      Rear Differential Lock Solenoid Differential lock coil ECU internal power status ON or OFF

      ON: Power supplied

      OFF: Power not supplied

      		 -
      CAN Signal Invalid Status by IG Voltage Low Whether CAN communication data is invalid due to IG voltage drop Valid or Inval Valid: IG voltage 9.5 V or higher Inval: IG voltage below 9.5 V
      SW Input Invalid Status by IG Voltage Low Whether actuator switch input is invalid due to IG voltage drop Valid or Inval Valid: IG voltage 7.1 V or higher Inval: IG voltage below 7.1 V
      Transfer Shift Invalid Status by IG Voltage Low Whether transfer shift actuator switching operation is invalid due to IG voltage drop Valid or Inval Valid: IG voltage 9.5 V or higher Inval: IG voltage below 9.5 V
      Number of DTC Number of DTCs stored

      Min.: 0

      Max.: 255

      		 0 -