Dtc P17A8 Transfer Shift Motor Control Circuit Circuit Open

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 - TRANSFER SHIFT ACTUATOR ASSEMBLY)

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

DTC 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
  1. Wire harness and connector
  2. 4 wheel drive control ECU
  3. Transfer shift actuator assembly

WIRING DIAGRAM

Refer to DTC P17A9 (Click here).

INSPECTION 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.

  1. Disconnect the C38 transfer shift actuator assembly connector.

  1. 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)
Land Cruiser. Urj200, 202 Grj200 Vdj200.Jf2A Transfer 4Wd Awd.Transfer System. Dtc P17A8 Transfer Shift Motor Control Circuit Circuit Open

  1. Disconnect the C38 transfer shift actuator assembly connector.

  1. 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

    Result:

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


B
REPLACE 4 WHEEL DRIVE CONTROL ECU (Click here)

C
REPLACE TRANSFER SHIFT ACTUATOR ASSEMBLY (Click here)
A

REPLACE 4 WHEEL DRIVE CONTROL ECU (Click here)