TRANSFER SYSTEM, Diagnostic DTC:P17AA

DTC Code DTC Name
P17AA Transfer Shift Motor Control Circuit High

DESCRIPTION

This DTC is output when a short to B+ in the high-low transfer shift motor and center differential lock shift motor drive circuit is detected.

DTC No.

DTC Detection Condition


  1. Diagnosis Condition

  2. Malfunction Status

  3. Malfunction Time

  4. Other

 Trouble Area
P17AA

  1. While the engine switch is turned on (IG), or directly after the engine switch is turned on (IG) (high-low transfer shift motor and center differential lock shift motor not operating)

  2. Short to B+ in the high-low transfer shift motor and center differential lock shift motor drive circuits

  3. 0.5 seconds or more (if directly after engine switch is turned on (IG), 0.05 seconds or more)

  4. 1 trip detection logic

  • Wire harness and connector

  • 4 wheel drive control ECU

  • Transfer shift actuator assembly

WIRING DIAGRAM

Refer to DTC P17A9 Click here.

PROCEDURE


  1. CHECK ACTUATOR ASSEMBLY (TRANSFER SHIFT MOTOR OR LOCK SHIFT MOTOR)


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

    2. A01WQ2EE05
      Text in Illustration
      *a

      Front view of wire harness connector

      (to 4 Wheel Drive Control ECU)

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

      Standard Voltage
      Transfer Shift Actuator Assembly (High-low Transfer Shift Motor) Side
      Tester Connection Condition Specified Condition
      A28-2 (HM1) or A28-6 (HM2) - Body ground Engine switch on (IG) Below 1 V
      Transfer Shift Actuator Assembly (Center Differential Lock Shift Motor) Side
      Tester Connection Condition Specified Condition
      A28-8 (TM1) or A28-7 (TM2) - Body ground Engine switch on (IG) Below 1 V
      Result
      Result Proceed to
      OK for LHD A
      for RHD B
      NG (transfer shift actuator assembly (high-low transfer shift motor) side) C
      NG (transfer shift actuator assembly (center differential lock shift motor) side) D

    A

    REPLACE 4 WHEEL DRIVE CONTROL ECU Click here

    B

    REPLACE 4 WHEEL DRIVE CONTROL ECU Click here

    D

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

    C

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


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

    2. Disconnect the C44 transfer shift actuator assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A28-2 (HM1) or C44-1 (HM1) - Body ground Engine switch on (IG) Below 1 V
      A28-6 (HM2) or C44-2 (HM2) - Body ground Engine switch on (IG) Below 1 V

    OK

    REPLACE TRANSFER SHIFT ACTUATOR ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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


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

    2. Disconnect the C43 transfer shift actuator assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A28-8 (TM1) or C43-1 (TM1) - Body ground Engine switch on (IG) Below 1 V
      A28-7 (TM2) or C43-2 (TM2) - Body ground Engine switch on (IG) Below 1 V

    OK

    REPLACE TRANSFER SHIFT ACTUATOR ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR