Dtc C15F0 Vfc Solenoid Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING GTS (SOLENOID CURRENT)

CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - POWER STEERING SOLENOID VALVE)

INSPECT POWER STEERING SOLENOID VALVE ASSEMBLY

DTC C15F0 VFC Solenoid Circuit


DESCRIPTION

This circuit supplies electric power to the power steering solenoid valve.
The power steering ECU controls the output current to the power steering solenoid valve in accordance with the steering angle signal, steering zero point memory, vehicle speed signal and engine speed signal, adjusting the amount of power steering assist.

DTC Code
DTC Detection Condition
Trouble area
C15F0
A short or open in the solenoid valve circuit
  1. Harness or connector
  2. Vane pump assembly
  3. Power steering ECU assembly

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Power Assist Systems.Power Steering System (W/ Vsc). Dtc C15F0 Vfc Solenoid Circuit


INSPECTION PROCEDURE

1.READ VALUE USING GTS (SOLENOID CURRENT)

  1. Turn the ignition switch off.

  1. Connect the GTS to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the GTS on.

  1. Enter the following menus: Chassis / PPS / Data List.

    PPS
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Solenoid Current
    		Solenoid Current/
    Min.: 0 mA
    Max.: 1000 mA
    		200 to 950 mA
    		The engine is running and the steering wheel is being turned.
    OK:
    The normal condition value is displayed the GTS.


NG
Go to step 2
OK

REPLACE POWER STEERING ECU ASSEMBLY (LandCruiser RM000003FC0019X.html)

2.CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - POWER STEERING SOLENOID VALVE)

  1. Disconnect the power steering ECU and power steering solenoid valve connectors.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    G46-7 (SOF+) - C156-2 (SOF+)
    		Always
    		Below 1 Ω
    G46-8 (SOF-) - C156-1 (SOF-)
    G46-7 (SOF+) - Body ground
    		Always
    		10 kΩ or higher
    G46-8 (SOF-) - Body ground


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.INSPECT POWER STEERING SOLENOID VALVE ASSEMBLY
Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Power Assist Systems.Power Steering System (W/ Vsc). Dtc C15F0 Vfc Solenoid Circuit

  1. Disconnect the power steering solenoid valve connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 (SOF-) - 2 (SOF+)
    		20°C (68°F)
    		6.7 to 7.3 Ω

  1. Connect the battery positive (+) lead with a 21 W bulb to terminal 2 (SOF+) and the negative (-) lead to terminal 1 (SOF-) of the solenoid valve connector. Then check that the valve moves and makes an operating noise.

    OK:
    Valve moves and makes an operating noise.
Text in Illustration
*a
Component without harness connected
(Power Steering Solenoid Valve)
Result
Result
Proceed to
OK
A
NG (for 1GD-FTV)
B
NG (for 1KD-FTV)
C
NG (for 2TR-FE)
D
NG (for 1GR-FE)
E


B
REPLACE VANE PUMP ASSEMBLY (LandCruiser RM00000138F01GX.html)

C
REPLACE VANE PUMP ASSEMBLY (LandCruiser RM00000138F01FX.html)

D
REPLACE VANE PUMP ASSEMBLY (LandCruiser RM00000138D01WX.html)

E
REPLACE VANE PUMP ASSEMBLY (LandCruiser RM000002H5D05HX.html)
A

REPLACE POWER STEERING ECU ASSEMBLY (LandCruiser RM000003FC0019X.html)