TRANSFER SYSTEM, Diagnostic DTC:P17DF

DTC Code DTC Name
P17DF Center Differential Lock Limit SW Circuit

DESCRIPTION

When the transfer shift actuator assembly is switching between free and lock, the TL2 and TL3 terminals are in one of the ON/OFF combinations listed in the table below.

Terminal Mode
FREE Switching LOCK
TL2 OFF ON ON
TL3 ON ON OFF

A malfunction is detected depending on the combination of the 2 circuits that make up the center differential lock limit switch.

DTC No.

DTC Detection Condition


  1. Diagnosis Condition

  2. Malfunction Status

  3. Malfunction Time

  4. Other

 Trouble Area
P17DF

  1. When switching between free and lock (center differential lock shift motor operating) while the ignition switch is turned to ON or directly after the ignition switch is turned to ON

  2. The combination of TL2 and TL3 does not match

  3. 0.05 seconds or more (if directly after ignition switch is turned to ON, 1 second or more)

  4. 1 trip detection logic

  • Wire harness and connector

  • 4 wheel drive control ECU

  • Transfer shift actuator assembly

WIRING DIAGRAM

A01XC2XE03
*a Center Differential Lock Limit Switch
*b Transfer Shift Actuator Assembly
*c 4 Wheel Drive Control ECU

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - TRANSFERSHIFT ACTUATOR ASSEMBLY)


    1. Disconnect the A27 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
      A27-10 (TL2) - C37-6 (TL2) Always Below 1 Ω
      A27-9 (TL3) - C37-5 (TL3) 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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    A01X4WZE01
    Text in Illustration
    *a

    Front view of wire harness connector

    (to Transfer Shift Actuator Assembly)

    1. Disconnect the C37 transfer shift actuator assembly connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      C37-6 (TL2) - Body ground Ignition switch ON 10 to 14 V
      C37-5 (TL3) - Body ground Ignition switch ON 10 to 14 V
      Result
      Result Proceed to
      OK for LHD A
      for RHD B
      NG C

    A

    REPLACE 4 WHEEL DRIVE CONTROL ECU Click here

    B

    REPLACE 4 WHEEL DRIVE CONTROL ECU Click here

    C

    REPLACE TRANSFER SHIFT ACTUATOR ASSEMBLY Click here