Dtc C15A5/65 Lock Mechanism Circuit

Steering. Land Cruiser. Urj200, 202 Grj200 Vdj200
Variable Gear Ratio Steering. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (LV, LG TERMINAL)

READ VALUE USING GTS (LOCK SOLENOID VOLTAGE)

INSPECT STEERING ACTUATOR ASSEMBLY

CHECK HARNESS AND CONNECTOR (VGRS ECU (STEERING CONTROL ECU) - STEERING ACTUATOR ASSEMBLY)

DTC C15A5/65 Lock Mechanism Circuit


DESCRIPTION

If the VGRS ECU (steering control ECU) detects a malfunction in the lock mechanism, it turns the master warning light on, and stores DTC C15A5/65.

DTC No.
DTC Detection Condition
Trouble Area
C15A5/65
Both conditions are met for approximately 0.025 seconds or more:
  1. The engine switch is on (IG).
  2. A short in the motor circuit or an internal malfunction in the ECU is detected.
  1. Steering actuator assembly
  2. VGRS ECU (steering control ECU)
  3. Harness or connector

WIRING DIAGRAM

Refer to DTC C15A3/63 (Click here).

INSPECTION PROCEDURE

NOTICE:
When replacing the VGRS ECU (steering control ECU) or steering actuator assembly, perform actuator angle neutral point calibration and initialization after replacing parts (Click here).
1.CHECK HARNESS AND CONNECTOR (LV, LG TERMINAL)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Variable Gear Ratio Steering.Variable Gear Ratio Steering System. Dtc C15A5/65 Lock Mechanism Circuit

  1. Turn the engine switch on (IG).

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

    HINT:
    With the connector connected to the VGRS ECU (steering control ECU), measure the voltage from the rear of the connector.
    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    E162-2 (LV) - Body ground
    		Engine switch on (IG)
    		11 to 14 V
    E162-6 (LG) - Body ground
    		Engine switch on (IG)
    		11 to 14 V
    Text in Illustration
    *a
    		Component with harness connected
    (VGRS ECU [Steering Control ECU])


NG
Go to step 3
OK


2.READ VALUE USING GTS (LOCK SOLENOID VOLTAGE)

  1. Turn the engine switch off.

  1. Connect the GTS to the DLC3.

  1. Start the engine.

  1. Turn the GTS on.

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

    VGRS
    Tester Display
    		Measurement Item /Range
    		Normal Condition
    		Diagnostic Note
    Lock Solenoid Voltage
    		Lock solenoid voltage/
    Min.: 0.00 V
    Max.: 255.99 V
    		0 to 14 V
    		-
    OK:
    0 to 14 V (while the engine is being started)
    Result
    Result
    		Proceed to
    OK
    		A
    NG (for LHD)
    		B
    NG (for RHD)
    		C


B
REPLACE VGRS ECU (STEERING CONTROL ECU) (Click here)

C
REPLACE VGRS ECU (STEERING CONTROL ECU) (Click here)
A

USE SIMULATION METHOD TO CHECK (Click here)

3.INSPECT STEERING ACTUATOR ASSEMBLY

  1. Turn the engine switch off.



    Land Cruiser. Urj200, 202 Grj200 Vdj200.Variable Gear Ratio Steering.Variable Gear Ratio Steering System. Dtc C15A5/65 Lock Mechanism Circuit

  1. Disconnect the E162 VGRS ECU (steering control ECU) connector.

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

    HINT:
    1. Measure the resistance of the steering actuator assembly at the connector of the VGRS ECU (steering control ECU).
    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E162-2 (LV) - E162-6 (LG)
    		Always
    		10 to 30 Ω
    E162-2 (LV) - Body ground
    		Always
    		100 kΩ or higher
    E162-6 (LG) - Body ground
    		Always
    		100 kΩ or higher
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to VGRS ECU [Steering Control ECU])
    Result
    Result
    		Proceed to
    OK (for LHD)
    		A
    OK (for RHD)
    		B
    NG
    		C


B
REPLACE VGRS ECU (STEERING CONTROL ECU) (Click here)

C
Go to step 4
A

REPLACE VGRS ECU (STEERING CONTROL ECU) (Click here)

4.CHECK HARNESS AND CONNECTOR (VGRS ECU (STEERING CONTROL ECU) - STEERING ACTUATOR ASSEMBLY)

  1. Turn the engine switch off.

  1. Disconnect the E162 VGRS ECU (steering control ECU) connector.

  1. Disconnect the E80 steering actuator assembly connector.

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

    Standard Resistance:

    Tester Connection
    		Condition
    		Specified Condition
    E162-2 (LV) - E80-7 (LV+)
    		Always
    		Below 1 Ω
    E162-6 (LG) - E80-16 (LG+)
    		Always
    		Below 1 Ω
    E162-2 (LV) - E80-6 (LG)
    		Always
    		10 to 30 Ω
    E162-2 (LV) or E80-7 (LV+) - Body ground
    		Always
    		100 kΩ or higher
    E162-6 (LG) or E80-16 (LG+) - Body ground
    		Always
    		100 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE STEERING ACTUATOR ASSEMBLY (Click here)