Dtc P17Ac Transfer Shift Motor Limit Switch 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 - TRANSFER SHIFT ACTUATOR ASSEMBLY)

CHECK 4 WHEEL DRIVE CONTROL ECU (ECU OUTPUT VOLTAGE)

DTC P17AC Transfer Shift Motor Limit Switch Circuit


DESCRIPTION

When the transfer shift actuator assembly is switching between high (H4) and low (L4), the HL1, HL2 and HL3 terminals are in one of the ON/OFF combinations listed in the table below.

Terminal
Mode
HIGH (H4)
Switching
LOW (L4)
HL1
ON
ON
←→
OFF*
←→
OFF
OFF
HL2
OFF
OFF
OFF*
ON
ON
HL3
OFF
ON
ON*
ON
OFF
  1. *: Neutral position (only for vehicles with a manual transmission)
    For vehicles with a manual transmission, when conditions for switching between H4 and L4 are not met, the transfer shift actuator assembly temporarily stops at the neutral position. Afterwards, when the conditions are met, switching is performed.
A malfunction is detected depending on the combination of the 3 circuits that make up the high-low transfer limit switch.

DTC No.
DTC Detection Condition
  1. Diagnosis Condition
  2. Malfunction Status
  3. Malfunction Time
  4. Other
Trouble Area
P17AC
  1. When switching between high and low (high-low transfer 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 HL1, HL2 and HL3 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
  1. Wire harness and connector
  2. 4 wheel drive control ECU
  3. Transfer shift actuator assembly

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Jf2A Transfer 4Wd Awd.Transfer System. Dtc P17Ac Transfer Shift Motor Limit Switch Circuit


INSPECTION PROCEDURE

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

  1. Disconnect the A27 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
    A27-8 (HL1) - C38-4 (HL1)
    		Always
    		Below 1 Ω
    A27-7 (HL2) - C38-6 (HL2)
    		Always
    		Below 1 Ω
    A27-6 (HL3) - C38-5 (HL3)
    		Always
    		Below 1 Ω
    C38-7 (GND) - Body ground
    		Always
    		Below 1 Ω
    A27-8 (HL1) or C38-4 (HL1) - Body ground
    		Always
    		10 kΩ or higher
    A27-7 (HL2) or C38-6 (HL2) - Body ground
    		Always
    		10 kΩ or higher
    A27-6 (HL3) or C38-5 (HL3) - 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)
Land Cruiser. Urj200, 202 Grj200 Vdj200.Jf2A Transfer 4Wd Awd.Transfer System. Dtc P17Ac Transfer Shift Motor Limit Switch Circuit

  1. Disconnect the C38 transfer shift actuator assembly connector.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    C38-4 (HL1) - Body ground
    		Ignition switch ON
    		10 to 14 V
    C38-6 (HL2) - Body ground
    		Ignition switch ON
    		10 to 14 V
    C38-5 (HL3) - Body ground
    		Ignition switch ON
    		10 to 14 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Transfer Shift Actuator Assembly)

    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 TRANSFER SHIFT ACTUATOR ASSEMBLY (Click here)