TRANSFER SYSTEM, Diagnostic DTC:P17A8

DTC Code DTC Name
P17A8 Transfer Shift Motor Control Circuit Circuit Open

DESCRIPTION

This DTC is output when an open circuit is detected in the high-low transfer shift motor drive circuit.

DTC No.

DTC Detection Condition


  1. Diagnosis Condition

  2. Malfunction Status

  3. Malfunction Time

  4. Other

 Trouble Area
P17A8

  1. When switching between high and low or during switching operation (high-low transfer shift motor operating) with ignition switch turned to ON

  2. Open circuit in the high-low transfer shift motor drive circuit

  3. 0.03 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 HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - TRANSFER SHIFT ACTUATOR ASSEMBLY)


    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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    B001ZNOE04
    Text in Illustration
    *a

    Component without harness connected

    (Transfer Shift Actuator Assembly)
    *b High-low Transfer Actuator Side

    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
      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