Transfer System Shift Motor Circuit

WIRING DIAGRAM

INSPECTION PROCEDURE

CONFIRM PROBLEM SYMPTOM

INSPECT TRANSFER SHIFT ACTUATOR ASSEMBLY (HIGH-LOW TRANSFER SHIFT MOTOR)

CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - TRANSFER SHIFT ACTUATOR ASSEMBLY)

CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - TRANSFER SHIFT ACTUATOR ASSEMBLY)

INSPECT TRANSFER SHIFT ACTUATOR ASSEMBLY (LIMIT SWITCH AND DETECTION SWITCH)

INSPECT TRANSFER SHIFT ACTUATOR ASSEMBLY (CENTER DIFFERENTIAL LOCK SHIFT MOTOR)

CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - TRANSFER SHIFT ACTUATOR ASSEMBLY)

CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - TRANSFER SHIFT ACTUATOR ASSEMBLY)

INSPECT TRANSFER SHIFT ACTUATOR ASSEMBLY (LIMIT SWITCH AND DETECTION SWITCH)

INSPECT DIFFERENTIAL LOCK SHIFT ACTUATOR (DIFFERENTIAL LOCK SHIFT MOTOR)

CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - DIFFERENTIAL LOCK SHIFT ACTUATOR)

CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - DIFFERENTIAL LOCK SHIFT ACTUATOR AND NO. 1 TRANSFER INDICATOR SWITCH)

INSPECT DIFFERENTIAL LOCK SHIFT ACTUATOR (LIMIT SWITCH)

INSPECT NO. 1 TRANSFER INDICATOR SWITCH

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

When the vehicle is stopped, mode switching may be unavailable due to the phase of the transfer assembly powertrain. There is no malfunction if mode switching is available after the vehicle is moved.

1. Confirm the problem symptoms.
   
   

   Result

   Result	Proceed to
   The 4LO indicator light continues to blink after operation of the transfer position switch (integration control and panel assembly)*1 The 4LO indicator light continues to blink after operation of the transfer position switch*2, *3	A
   The center differential lock indicator light continues to blink after operation of the center differential lock switch (integration control and panel assembly)*1 The center differential lock indicator light continues to blink after operation of the center differential lock switch*2, *3	B
   The rear differential lock indicator light continues to blink operation of the differential lock switch*4	C

   1. *1: for Automatic Transmission w/ Entry and Start System
      
   2. *2: for Manual Transmission w/ Entry and Start System
      
   3. *3: w/o Entry and Start System
      
   4. *4: w/ Rear Differential Lock
      
   1. Blinking: Blinks at 0.5 second intervals (0.5 seconds on and 0.5 seconds off)
      

1. Disconnect the C38 transfer shift actuator assembly connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   1 (HM1) - 2 (HM2)	Always	1.5 to 100 Ω

   Text in Illustration

   *a	Component without harness connected (Transfer Shift Actuator Assembly)
   *b	High-low Transfer Actuator Side

1. Disconnect the A28 4 wheel drive control ECU connector.
   

2. Disconnect the C38 transfer shift actuator assembly connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   A28-2 (HM1) - C38-1 (HM1)	Always	Below 1 Ω
   A28-6 (HM2) - C38-2 (HM2)	Always	Below 1 Ω
   A28-2 (HM1) or C38-1 (HM1) - A28-6 (HM2) or C38-2 (HM2)	Always	10 kΩ or higher

1. Disconnect the A27 4 wheel drive control ECU connector.
   

2. Disconnect the C38 transfer shift actuator assembly connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   A27-8 (HL1) - C38-4 (HL1)	Always	Below 1 Ω
   A27-7 (HL2) - C38-6 (HL2)	Always	Below 1 Ω
   A27-6 (HL3) - C38-5 (HL3)	Always	Below 1 Ω
   A27-3 (NP) - C38-3 (N)*	Always	Below 1 Ω
   C38-7 (GND) - Body ground	Always	Below 1 Ω
   A27-8 (HL1) or C38-4 (HL1) - Body ground	Always	10 kΩ or higher
   A27-7 (HL2) or C38-6 (HL2) - Body ground	Always	10 kΩ or higher
   A27-6 (HL3) or C38-5 (HL3) - Body ground	Always	10 kΩ or higher
   A27-3 (NP) or C38-3 (N)* - Body ground	Always	10 kΩ or higher

   1. *: for Manual Transmission
      

1. Turn the ignition switch off.
   

2. Remove the transfer shift actuator assembly (Click here).
   

3. Check the high-low transfer limit switch and neutral position detection switch* of the transfer shift actuator assembly (Click here).
   

   1. *: for Manual Transmission
      

1. Disconnect the C37 transfer shift actuator assembly connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   1 (TM1) - 2 (TM2)	Always	1.5 to 100 Ω

   Text in Illustration

   *a	Component without harness connected (Transfer Shift Actuator Assembly)
   *b	Center Differential Lock Actuator Side

1. Disconnect the A28 4 wheel drive control ECU connector.
   

2. Disconnect the C37 transfer shift actuator assembly connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   A28-8 (TM1) - C37-1 (TM1)	Always	Below 1 Ω
   A28-7 (TM2) - C37-2 (TM2)	Always	Below 1 Ω
   A28-8 (TM1) or C37-1 (TM1) - A28-7 (TM2) or C37-2 (TM2)	Always	10 kΩ or higher

1. Disconnect the A27 4 wheel drive control ECU connector.
   

2. Disconnect the C37 transfer shift actuator assembly connector.
   

3. Disconnect the A24 skid control ECU (master cylinder solenoid) connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   A27-10 (TL2) - C37-6 (TL2)	Always	Below 1 Ω
   A27-9 (TL3) - C37-5 (TL3)	Always	Below 1 Ω
   A27-1 (P1) - C37-3 (CDL)	Always	Below 1 Ω
   C37-7 (GND1) - Body ground	Always	Below 1 Ω
   A27-10 (TL2) or C37-6 (TL2) - Body ground	Always	10 kΩ or higher
   A27-9 (TL3) or C37-5 (TL3) - Body ground	Always	10 kΩ or higher
   A27-1 (P1) or C37-3 (CDL) - Body ground	Always	10 kΩ or higher

1. Turn the ignition switch off.
   

2. Remove the transfer shift actuator assembly (Click here).
   

3. Check the center differential lock limit switch and center differential lock detection switch of the transfer shift actuator assembly (Click here).
   
   

   Result:

   
   

   Result		Proceed to
   OK	for LHD	A
   	for RHD	B
   NG		C

1. Disconnect the f1 differential lock shift actuator connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   3 - 2	Always	1.5 to 100 Ω

   Text in Illustration

   *a	Component without harness connected (Center Differential Lock Actuator)

1. Disconnect the A28 4 wheel drive control ECU connector.
   

2. Disconnect the f1 differential lock shift actuator connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   A28-3 (M1) - f1-3	Always	Below 1 Ω
   A28-9 (M2) - f1-2	Always	Below 1 Ω
   A28-3 (M1) or f1-3 - A28-9 (M2) or f1-2	Always	10 kΩ or higher

1. Disconnect the A27 4 wheel drive control ECU connector.
   

2. Disconnect the f1 differential lock shift actuator connector.
   

3. Disconnect the f2 rear differential lock position switch (No. 1 transfer indicator switch) connector.
   

4. Disconnect the A24 skid control ECU (master cylinder solenoid) connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   A27-11 (RLY1) - f1-6	Always	Below 1 Ω
   A27-2 (RLY2) - f1-5	Always	Below 1 Ω
   f1-4 - Body ground	Always	Below 1 Ω
   A27-12 (RLP) - f2-2 (+B)	Always	Below 1 Ω
   f2-1 (GND) - Body ground	Always	Below 1 Ω
   A27-11 (RLY1) or f1-6 - Body ground	Always	10 kΩ or higher
   A27-2 (RLY2) or f1-5 - Body ground	Always	10 kΩ or higher
   A27-12 (RLP) or f2-2 (+B) - Body ground	Always	10 kΩ or higher

1. Turn the ignition switch off.
   

2. Remove the differential lock shift actuator (Click here).
   

3. Check the limit switch of the differential lock shift actuator (Click here).
   

1. Turn the ignition switch off.
   

2. Remove the rear differential lock position switch (No. 1 transfer indicator switch) (Click here).
   

3. Check the rear differential lock position switch (No. 1 transfer indicator switch) (Click here).
   
   

   Result:

   
   

   Result		Proceed to
   OK	for LHD	A
   	for RHD	B
   NG		C