Dtc P17C3 Rear Differential Lock Limit Sw Circuit

Drivetrain. Land Cruiser. Urj200, 202 Grj200 Vdj200
Jf2A Transfer 4Wd Awd. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

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

CHECK 4 WHEEL DRIVE CONTROL ECU (ECU OUTPUT VOLTAGE)

DTC P17C3 Rear Differential Lock Limit SW Circuit


DESCRIPTION

When the differential lock shift actuator is switching between free and lock, the RLY1 and RLY2 terminals are in one of the ON/OFF combinations listed in the table below.

Terminal
Mode
FREE
Switching
LOCK
RLY1
ON
ON
OFF
RLY2
OFF
ON
ON
A malfunction is detected depending on the combination of the 2 circuits that make up the limit switch of the differential lock shift actuator assembly.

DTC No.
DTC Detection Condition
  1. Diagnosis Condition
  2. Malfunction Status
  3. Malfunction Time
  4. Other
Trouble Area
P17C3
  1. When rear differential is switching between free and lock (differential lock shift motor operating) with ignition switch turned to ON
  2. The combination of RLY1 and RLY2 does not match
  3. 0 seconds
  4. 1 trip detection logic
  1. Wire harness and connector
  2. 4 wheel drive control ECU
  3. Differential lock shift actuator

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Jf2A Transfer 4Wd Awd.Transfer System. Dtc P17C3 Rear Differential Lock Limit Sw Circuit


INSPECTION PROCEDURE

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

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

  1. Disconnect the f1 differential lock shift actuator connector.

  1. 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
    A27-11 (RLY1) or f1-6 - Body ground
    		Always
    		10 kΩ or higher
    A27-2 (RLY2) or f1-5 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.CHECK 4 WHEEL DRIVE CONTROL ECU (ECU OUTPUT VOLTAGE)

  1. Disconnect the f1 differential lock shift actuator connector.



    Land Cruiser. Urj200, 202 Grj200 Vdj200.Jf2A Transfer 4Wd Awd.Transfer System. Dtc P17C3 Rear Differential Lock Limit Sw Circuit

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    f1-6 - Body ground
    		Ignition switch ON
    		10 to 14 V
    f1-5 - Body ground
    		Ignition switch ON
    		10 to 14 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Differential Lock Shift Actuator)

    Result:

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


B
REPLACE 4 WHEEL DRIVE CONTROL ECU (Click here)

C
REPLACE 4 WHEEL DRIVE CONTROL ECU (Click here)
A

REPLACE DIFFERENTIAL LOCK SHIFT ACTUATOR (Click here)