TOUCH SELECT 2-4 AND HIGH-LOW SYSTEM > ON-VEHICLE INSPECTION

for Preparation Click here



1. INSPECT INDICATOR LIGHT


  1. 4HI Indicator Light:

    1. Turn the ignition switch ON.

    2. Change the 4WD control switch from 2WD to 4H.



      3. C159463

    3. Check the 4HI indicator light.

      OK:
      Switch Condition
      		Specified Condition
      2WD to 4H
      		4HI indicator light comes on or 4HI indicator light comes on after it is blinking
      If there is a malfunction, inspect the switch, ECU, transfer shift actuator and A.D.D. actuator. If the system is normal, there may be a malfunction in the CAN communication system or combination meter. In this case, first check the CAN communication system (Click here). Then check the combination meter (Click here).


  1. 4LO Indicator Light:

    1. Turn the ignition switch ON.

    2. Change the 4WD control switch from 2WD to 4H. Then change it from 4H to 4L after the 4HI indicator light illuminates (after 4H switch completion).



      3. C159462

    3. Check the 4LO indicator light.

      OK:
      Switch Condition
      		Specified Condition
      After 2WD to 4WD HIGH switch completion, 4H to 4L
      		4LO indicator light comes on or 4LO indicator light comes on after it is blinking
      If there is a malfunction, inspect the switch, ECU and actuator. If the system is normal, the combination meter may be malfunctioning.


2. INSPECT FUSE (4WD)

  1. Remove the 4WD fuse from the main body ECU.

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    4WD fuse
    		Always
    		Below 1 Ω
    If a fuse is blown, inspect the harness connected to the fuse for a short circuit, and repair or replace the harness or replace the fuse.


3. INSPECT 4WD CONTROL ECU (POWER SUPPLY)


    C160037E01

  1. Measure the voltage according to the value(s) in the table below.

    Standard voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    A26-3 (IG) - Body ground
    		Ignition switch ON
    		11 to 14 V
    If there is a malfunction, inspect the harness or connector. If the harness is malfunctioning, repair or replace harness or connector. If the harness or connector is normal, replace the 4WD control ECU (Click here).

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A26-4 (GND) - Body ground
    		Always
    		Below 1 Ω
    If there is a malfunction, repair or replace the harness or connector.


4. INSPECT 4WD CONTROL ECU (4WD CONTROL SWITCH)


    C160037E03

  1. Measure the voltage according to the value(s) in the table below.

    Standard voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    A25-11 (2-4) - Body ground
    		Ignition switch ON
    4WD control switch 2WD position
    		Below 1.5 V
    Ignition switch ON
    4WD control switch 4H position
    		Below 1.5 V
    Ignition switch ON
    4WD control switch 4L position
    		10.5 to 14 V
    A25-13 (LO) - Body ground
    		Ignition switch ON
    4WD control switch 2WD position
    		10.5 to 14 V
    Ignition switch ON
    4WD control switch 4H position
    		Below 1.5 V
    Ignition switch ON
    4WD control switch 4L position
    		Below 1.5 V
    If there is a malfunction, check the power supply. If the power supply is normal, inspect the 4WD control switch (Click here).


5. INSPECT 2WD-4WD TRANSFER SHIFT ACTUATOR

HINT:
After inspecting the power supply or 4WD control switch, inspect the 2WD-4WD transfer shift actuator.


  1. Check the harness and connector (ECU - 2WD-4WD transfer shift actuator).

    1. Disconnect the D67 actuator connector.

    2. Disconnect the A25 and A26 ECU connectors.



    3. Measure the resistance according to the value(s) in the table below.


      C160151E05

      Standard resistance:
      Tester Connection
      		Condition
      		Specified Condition
      A25-6 (TL1) - D67-4 (TL1)
      		Always
      		Below 1 Ω
      A25-6 (TL1) - Body ground
      		Always
      		10 kΩ or higher
      A25-8 (TL3) - D67-5 (TL3)
      		Always
      		Below 1 Ω
      A25-8 (TL3) - Body ground
      		Always
      		10 kΩ or higher
      A25-14 (4WD) - D67-3 (CDL)
      		Always
      		Below 1 Ω
      A25-14 (4WD) - Body ground
      		Always
      		10 kΩ or higher
      A26-7 (TM2) - D67-2 (TM2)
      		Always
      		Below 1 Ω
      A26-7 (TM2) - Body ground
      		Always
      		10 kΩ or higher
      A26-8 (TM1) - D67-1 (TM1)
      		Always
      		Below 1 Ω
      A26-8 (TM1) - Body ground
      		Always
      		10 kΩ or higher
      D67-7 (GND1) - Body ground
      		Always
      		Below 1 Ω
      If there is a malfunction, repair or replace harness or connector. If the harness or connector is normal, check the ECU output voltage.


  1. Check the 4WD control ECU (2WD-4WD transfer shift actuator).

    1. Connect the A25 and A26 ECU connectors.

    2. Connect the D67 actuator connector.



      3. C160037E04

    3. Measure the voltage according to the value(s) in the table below.

      Standard voltage:
      Tester Connection
      		Switch Condition
      		Specified Condition
      A26-8 (TM1) - A26-4 (GND)
      		Ignition switch ON
      4WD control switch 2WD → 4H position
      (during transfer shift actuator 2WD to 4WD HIGH switching operation)
      		10 to 14 V
      Ignition switch ON
      4WD control switch 2WD → 4H position
      (transfer shift actuator 2WD to 4WD HIGH switching operation stopped)
      		Below 1.5 V
      A26-7 (TM2) - A26-4 (GND)
      		Ignition switch ON
      4WD control switch 4H → 2WD position
      (during transfer shift actuator 4WD HIGH to 2WD switching operation)
      		10 to 14 V
      Ignition switch ON
      4WD control switch 4H → 2WD position
      (transfer shift actuator 4WD HIGH to 2WD switching operation stopped)
      		Below 1.5 V
      A25-6 (TL1) - A26-4 (GND)
      		Ignition switch ON
      4WD control switch 2WD position
      		Below 1.5 V
      Ignition switch ON
      4WD control switch 2WD → 4H position
      		10.5 to 14 V
      A25-8 (TL3) - A26-4 (GND)
      		Ignition switch ON
      4WD control switch 2WD position
      		11 to 14 V
      Ignition switch ON
      4WD control switch 2WD → 4H position
      		Below 1.5 V
      A25-14 (4WD) - A26-4 (GND)
      		Ignition switch ON
      4WD control switch 2WD position
      		9.5 to 14 V
      Ignition switch ON
      4WD control switch 2WD → 4H position
      		Below 1.5 V
      If there is a malfunction, determine if the malfunction is on the ECU side or the actuator side by disconnecting the connector of the 2WD-4WD transfer shift actuator, and then checking the ECU output voltage.


  1. Check the 4WD control ECU.

    1. Disconnect the D67 actuator connector.

    2. Connect the A25 and A26 ECU connectors.



      3. C160506E02

    3. Measure the voltage according to the value(s) in the table below.

      Standard voltage:
      Tester Connection
      		Switch Condition
      		Specified Condition
      D67-3 (CDL) - D67-7 (GND1)
      		Ignition switch ON
      		9.5 to 14 V
      D67-4 (TL1) - D67-7 (GND1)
      		Ignition switch ON
      		10.5 to 14 V
      D67-5 (TL3) - D67-7 (GND1)
      		Ignition switch ON
      		10.5 to 14 V
      If there is a malfunction, replace the 4WD control ECU (Click here). If the voltage is normal, inspect the 2WD-4WD transfer shift actuator, as the voltage applied to the motor cannot be measured.


  1. Inspect the 2WD-4WD transfer shift actuator.

    1. Remove the transfer shift actuator (Click here).



    2. Check the 2WD to 4WD HIGH switch.
      Connect lines via a relay as shown in the illustration, then check that the actuator fork moves from the 2WD to 4WD HIGH position.

      NOTICE:
      1. Make sure to perform this inspection with the actuator removed from the vehicle. If this inspection is performed with the actuator installed to the vehicle, the actuator will be damaged.
      2. When inspecting the actuator, make sure to operate it with the lines connected via a relay. If the lines are not connected via a relay and battery voltage is directly applied to the actuator, the actuator will be damaged.

      HINT:
      When inspecting the operation described above, use the BACK P/W NO. 2 relay.


      C212019E01

      1. After the 2WD to 4WD HIGH switch is complete, inspect the 4WD detection switch and limit switch.

        Standard resistance:
        Tester Connection
        		Condition
        		Specified Condition
        3 (CDL) - 7 (GND1)
        		After 2WD to 4WD HIGH switch is complete
        		Below 1 Ω
        4 (TL1) - 7 (GND1)
        		After 2WD to 4WD HIGH switch is complete
        		100 kΩ or higher
        5 (TL3) - 7 (GND1)
        		After 2WD to 4WD HIGH switch is complete
        		Below 1 Ω


    3. Check the 4WD HIGH to 2WD switch.
      Connect lines via a relay as shown in the illustration, then check that the actuator fork moves from the 4WD HIGH to 2WD position.


      C212020E01

      1. After the 4WD HIGH to 2WD switch is complete, inspect the 4WD detection switch and limit switch.

        Standard resistance:
        Tester Connection
        		Condition
        		Specified Condition
        3 (CDL) - 7 (GND1)
        		After 4WD HIGH to 2WD switch is complete
        		100 kΩ or higher
        4 (TL1) - 7 (GND1)
        		After 4WD HIGH to 2WD switch is complete
        		Below 1 Ω
        5 (TL3) - 7 (GND1)
        		After 4WD HIGH to 2WD switch is complete
        		100 kΩ or higher
        If there is a malfunction, replace the transfer shift actuator (Click here). If the transfer shift actuator is normal, replace the 4WD control ECU (Click here).


6. INSPECT A.D.D. ACTUATOR

HINT:
After inspecting the 2WD-4WD transfer shift actuator, inspect the A.D.D. actuator.


  1. Check the harness and connector (ECU - A.D.D. actuator).

    1. Disconnect the A25 and A26 ECU connectors.

    2. Disconnect the G1 actuator connector.



    3. Measure the resistance according to the value(s) in the table below.


      C160320E01

      Standard resistance:
      Tester Connection
      		Condition
      		Specified Condition
      A25-9 (DL1) - G1-6 (DL1)
      		Always
      		Below 1 Ω
      A25-9 (DL1) - Body ground
      		Always
      		100 kΩ or higher
      A25-10 (DL2) - G1-5 (DL2)
      		Always
      		Below 1 Ω
      A25-10 (DL2) - Body ground
      		Always
      		100 kΩ or higher
      A25-15 (ADD) - G1-3 (ADD)
      		Always
      		Below 1 Ω
      A25-15 (ADD) - Body ground
      		Always
      		100 kΩ or higher
      A26-1 (DM1) - G1-1 (DM1)
      		Always
      		Below 1 Ω
      A26-1 (DM1) - Body ground
      		Always
      		100 kΩ or higher
      A26-5 (DM2) - G1-2 (DM2)
      		Always
      		Below 1 Ω
      A26-5 (DM2) - Body ground
      		Always
      		100 kΩ or higher
      G1-4 (GND) - Body ground
      		Always
      		Below 1 Ω
      If there is a malfunction, repair or replace harness or connector. If the harness or connector is normal, check the ECU output voltage.


  1. Check the 4WD control ECU (A.D.D. actuator).

    1. Connect the A25 and A26 ECU connectors.

    2. Connect the G1 actuator connector.



      3. C160037E05

    3. Measure the voltage according to the value(s) in the table below.

      Standard voltage:
      Tester Connection
      		Switch Condition
      		Specified Condition
      A26-5 (DM2) - A26-4 (GND)
      		Ignition switch ON
      4WD control switch 2WD → 4H position
      (during A.D.D. actuator Free to Lock operation)
      		10 to 14 V
      Ignition switch ON
      4WD control switch 2WD → 4H position
      (A.D.D. actuator Free to Lock operation stopped)
      		Below 1.5 V
      A26-1 (DM1) - A26-4 (GND)
      		Ignition switch ON
      4WD control switch 4H → 2WD position
      (during A.D.D. actuator Lock to Free operation)
      		10 to 14 V
      Ignition switch ON
      4WD control switch 4H → 2WD position
      (A.D.D. actuator Lock to Free operation stopped)
      		Below 1.5 V
      A25-9 (DL1) - A26-4 (GND)
      		Ignition switch ON
      4WD control switch 2WD position (A.D.D. actuator Free)
      		10.5 to 14 V
      Ignition switch ON
      4WD control switch 2WD → 4H position (A.D.D. actuator Lock)
      		Below 1.5 V
      A25-10 (DL2) - A26-4 (GND)
      		Ignition switch ON
      4WD control switch 2WD position (A.D.D. actuator Free)
      		Below 1.5 V
      Ignition switch ON
      4WD control switch 2WD → 4H position (A.D.D. actuator Lock)
      		10.5 to 14 V
      A25-15 (ADD) - A26-4 (GND)
      		Ignition switch ON
      4WD control switch 2WD position
      		10 to 14 V
      Ignition switch ON
      4WD control switch 2WD → 4H position
      		Below 1.5 V
      If there is a malfunction, determine if the malfunction is on the ECU side or the actuator side by disconnecting the connector of the A.D.D. actuator, and then checking the ECU output voltage.


  1. Check the 4WD control ECU.

    1. Connect the A25 and A26 ECU connectors.

    2. Disconnect the G1 actuator connector.



      3. C160511E01

    3. Measure the voltage according to the value(s) in the table below.

      Standard voltage:
      Tester Connection
      		Switch Condition
      		Specified Condition
      G1-3 (ADD) - G1-4 (GND)
      		Ignition switch ON
      		10 to 14 V
      G1-5 (DL2) - G1-4 (GND)
      		Ignition switch ON
      		10.5 to 14 V
      G1-6 (DL1) - G1-4 (GND)
      		Ignition switch ON
      		10.5 to 14 V
      If there is a malfunction, replace the 4WD control ECU (Click here). If the voltage is normal, inspect the A.D.D. actuator, as the voltage applied to the motor cannot be measured.


  1. Inspect the A.D.D. actuator.

    1. Remove the A.D.D. actuator (Click here).



    2. Check the Free to Lock switch.
      Connect lines via a relay as shown in the illustration, then check that the actuator fork moves from the Free to Lock position.

      NOTICE:
      1. Make sure to perform this inspection with the actuator removed from the vehicle. If this inspection is performed with the actuator installed to the vehicle, the actuator will be damaged.
      2. When inspecting the actuator, make sure to operate it with the lines connected via a relay. If the lines are not connected via a relay and battery voltage is directly applied to the actuator, the actuator will be damaged.

      HINT:
      When inspecting the operation described above, use the BACK P/W NO. 2 relay.


      C212021E01

      1. After the Free to Lock switch is complete, inspect the A.D.D. detection switch and limit switch.

        Standard resistance:
        Tester Connection
        		Condition
        		Specified Condition
        3 (ADD) - 4 (GND)
        		After Free to Lock switch is complete
        		Below 1 Ω
        5 (DL2) - 4 (GND)
        		After Free to Lock switch is complete
        		100 kΩ or higher
        6 (DL1) - 4 (GND)
        		After Free to Lock switch is complete
        		Below 1 Ω


    3. Check the Lock to Free switch.
      Connect lines via a relay as shown in the illustration, then check that the actuator fork moves from the Lock to Free position.


      C212022E01

      1. After the Lock to Free switch is complete, inspect the A.D.D. detection switch and limit switch.

        Standard resistance:
        Tester Connection
        		Condition
        		Specified Condition
        3 (ADD) - 4 (GND)
        		After Lock to Free switch is complete
        		100 kΩ or higher
        5 (DL2) - 4 (GND)
        		After Lock to Free switch is complete
        		Below 1 Ω
        6 (DL1) - 4 (GND)
        		After Lock to Free switch is complete
        		100 kΩ or higher
        If there is a malfunction, replace the A.D.D. actuator (Click here). If the A.D.D. actuator is normal, replace the 4WD control ECU (Click here).


7. INSPECT HIGH-LOW TRANSFER SHIFT ACTUATOR

HINT:
Before the inspection, check that the system is switched from 2WD to 4WD normally.


  1. Check the harness and connector (ECU - actuator).

    1. Disconnect the D68 high-low transfer shift actuator connector.

    2. Disconnect the A25 and A26 ECU connector.



    3. Measure the resistance according to the value(s) in the table below.


      C160319E01

      Standard resistance:
      Tester Connection
      		Condition
      		Specified Condition
      A25-1 (HL1) - D68-4 (HL1)
      		Always
      		Below 1 Ω
      A25-1 (HL1) - Body ground
      		Always
      		100 kΩ or higher
      A25-2 (HL2) - D68-6 (HL2)
      		Always
      		Below 1 Ω
      A25-2 (HL2) - Body ground
      		Always
      		100 kΩ or higher
      A25-3 (HL3) - D68-5 (HL3)
      		Always
      		Below 1 Ω
      A25-3 (HL3) - Body ground
      		Always
      		100 kΩ or higher
      A25-16 (NP) - D68-3 (N)
      		Always
      		Below 1 Ω
      A25-16 (NP) - Body ground
      		Always
      		100 kΩ or higher
      A26-2 (HM1) - D68-1 (HM1)
      		Always
      		Below 1 Ω
      A26-2 (HM1) - Body ground
      		Always
      		100 kΩ or higher
      A26-6 (HM2) - D68-2 (HM2)
      		Always
      		Below 1 Ω
      A26-6 (HM2) - Body ground
      		Always
      		100 kΩ or higher
      D68-7 (GND) - Body ground
      		Always
      		Below 1 Ω
      If there is a malfunction, repair or replace harness or connector. If the harness or connector is normal, check the ECU output voltage.


  1. Check the 4WD control ECU (high-low transfer shift actuator).

    1. Connect the A25 and A26 ECU connectors.

    2. Connect the D68 actuator connector.



      3. C160037E06

    3. Measure the voltage according to the value(s) in the table below.

      Standard voltage:
      Tester Connection
      		Switch Condition
      		Specified Condition
      A26-6 (HM2) - A26-4 (GND)
      		Ignition switch ON
      4WD control switch 4H → 4L position
      (during transfer shift actuator 4WD HIGH to 4WD LOW operation)
      		10 to 14 V
      Ignition switch ON
      4WD control switch 4H → 4L position
      (transfer shift actuator 4WD HIGH to 4WD LOW operation stopped)
      		Below 1.5 V
      A26-2 (HM1) - A26-4 (GND)
      		Ignition switch ON
      4WD control switch 4L → 4H
      (during transfer shift actuator 4WD LOW to 4WD HIGH operation)
      		10 to 14 V
      Ignition switch ON
      4WD control switch 4L → 4H position
      (transfer shift actuator 4WD LOW to 4WD HIGH operation stopped)
      		Below 1.5 V
      A25-1 (HL1) - A26-4 (GND)
      		Ignition switch ON
      4WD control switch 4H position
      		Below 1.5 V
      Ignition switch ON
      4WD control switch 4H → 4L position
      		10.5 to 14 V
      A25-2 (HL2) - A26-4 (GND)
      		Ignition switch ON
      4WD control switch 4H position
      		10.5 to 14 V
      Ignition switch ON
      4WD control switch 4H → 4L position
      		Below 1.5 V
      A25-3 (HL3) - A26-4 (GND)
      		Ignition switch ON
      4WD control switch 4H position
      		10.5 to 14 V
      Ignition switch ON
      1.5 seconds or less after 4WD control switch is changed from 4H to 4L
      		Below 1.5 V
      Ignition switch ON
      Over 1.5 seconds after 4WD control switch is changed from 4H to 4L
      		10.5 to 14 V
      A25-16 (NP) - A26-4 (GND)
      		Ignition switch ON
      1.5 seconds or less after 4WD control switch is changed from 4H to 4L
      		Below 1.5 V
      Ignition switch ON
      Over 1.5 seconds after 4WD control switch is changed from 4H to 4L
      		10 to 14 V
      If there is a malfunction, determine if the malfunction is on the ECU side or the actuator side by disconnecting the connector of the high-low transfer shift actuator, and then checking the ECU output voltage.


  1. Check the 4WD control ECU.

    1. Connect the A25 and A26 ECU connectors.

    2. Disconnect the D68 actuator connector.



      3. C160513E01

    3. Measure the voltage according to the value(s) in the table below.

      Standard voltage:
      Tester Connection
      		Switch Condition
      		Specified Condition
      D68-3 (N) - D68-7 (GND)
      		Ignition switch ON
      		10 to 14 V
      D68-4 (HL1) - D68-7 (GND)
      		Ignition switch ON
      		10.5 to 14 V
      D68-5 (HL3) - D68-7 (GND)
      		Ignition switch ON
      		10.5 to 14 V
      D68-6 (HL2) - D68-7 (GND)
      		Ignition switch ON
      		10.5 to 14 V
      If there is a malfunction, replace the 4WD control ECU (Click here). If the voltage is normal, inspect the high-low transfer shift actuator, as the voltage applied to the motor cannot be measured.


  1. Inspect the high-low transfer shift actuator.

    1. Remove the transfer shift actuator (Click here).



    2. Check the 4WD HIGH to 4WD LOW switch.
      Connect lines via a relay as shown in the illustration, then check that the actuator fork moves from the 4WD HIGH to 4WD LOW position.

      NOTICE:
      1. Make sure to perform this inspection with the actuator removed from the vehicle. If this inspection is performed with the actuator installed to the vehicle, the actuator will be damaged.
      2. When inspecting the actuator, make sure to operate it with the lines connected via a relay. If the lines are not connected via a relay and battery voltage is directly applied to the actuator, the actuator will be damaged.

      HINT:
      When inspecting the operation described above, use the BACK P/W NO. 2 relay.


      C212023E01

      1. After the 4WD HIGH to 4WD LOW switch is complete, inspect the neutral detection switch and limit switch.

        Standard resistance:
        Tester Connection
        		Condition
        		Specified Condition
        3 (N) - 7 (GND)
        		After 4WD HIGH to 4WD LOW switch is complete
        		100 kΩ or higher
        4 (HL1) - 7 (GND)
        		After 4WD HIGH to 4WD LOW switch is complete
        		100 kΩ or higher
        5 (HL3) - 7 (GND)
        		After 4WD HIGH to 4WD LOW switch is complete
        		100 kΩ or higher
        6 (HL2) - 7 (GND)
        		After 4WD HIGH to 4WD LOW switch is complete
        		Below 1 Ω


    3. Check the 4WD LOW to 4WD HIGH switch.
      Connect lines via a relay as shown in the illustration, then check that the actuator fork moves from the 4WD LOW to 4WD HIGH position.


      C212024E01

      1. After the 4WD LOW to 4WD HIGH switch is complete, inspect the neutral detection switch and limit switch.

        Standard resistance:
        Tester Connection
        		Condition
        		Specified Condition
        3 (N) - 7 (GND)
        		After 4WD LOW to 4WD HIGH switch is complete
        		100 kΩ or higher
        4 (HL1) - 7 (GND)
        		After 4WD LOW to 4WD HIGH switch is complete
        		Below 1 Ω
        5 (HL3) - 7 (GND)
        		After 4WD LOW to 4WD HIGH switch is complete
        		100 kΩ or higher
        6 (HL2) - 7 (GND)
        		After 4WD LOW to 4WD HIGH switch is complete
        		100 kΩ or higher
        If there is a malfunction, replace the transfer shift actuator (Click here). If the transfer shift actuator is normal, replace the 4WD control ECU (Click here).