Dtc C15A1/61 Actuator Malfunction

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 (STEERING CONTROL ECU - STEERING ACTUATOR)

CHECK STEERING ACTUATOR

DTC C15A1/61 Actuator Malfunction


DESCRIPTION

The steering control ECU drives the actuator while the steering wheel is turned to set the gear ratio. It detects the current flowing into the actuator motor driving circuit.
If the steering control ECU detects excessive current, it will store DTC C15A1/61, turn on the master warning light, and stop VGRS operation.

DTC Code
DTC Detection Condition
Trouble Area
C15A1/61
Excessive current (exceeding the estimated amount) flows due to a malfunction in the motor drive circuit.
  1. Harness or connector
  2. Steering actuator
  3. Steering control ECU

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Variable Gear Ratio Steering.Variable Gear Ratio Steering System. Dtc C15A1/61 Actuator Malfunction


INSPECTION PROCEDURE

HINT:
When DTC C15A2/62 is output, a short circuit inside the steering actuator or inside the steering control ECU is suspected.
1.CHECK HARNESS AND CONNECTOR (STEERING CONTROL ECU - STEERING ACTUATOR)

Land Cruiser. Urj200, 202 Grj200 Vdj200.Variable Gear Ratio Steering.Variable Gear Ratio Steering System. Dtc C15A1/61 Actuator Malfunction

  1. Disconnect the E78 steering control ECU connector.

  1. Disconnect the E80 steering actuator connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E78-1 (BMV) - E78-2 (BMU)
    		Always
    		10 kΩ or higher
    E78-1 (BMV) - E78-3 (BMW)
    E78-2 (BMU) - E78-3 (BMW)
    E78-1 (BMV) - E80-5 (BMV+)
    		Always
    		Below 1 Ω
    E78-2 (BMU) - E80-4 (BMU+)
    E78-3 (BMW) - E80-13 (BMW+)
    E78-1 (BMV) - Body ground
    		Always
    		10 kΩ or higher
    E78-2 (BMU) - Body ground
    E78-3 (BMW) - Body ground


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.CHECK STEERING ACTUATOR


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Variable Gear Ratio Steering.Variable Gear Ratio Steering System. Dtc C15A1/61 Actuator Malfunction

  1. Disconnect the E78 steering control ECU connector.

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

    HINT:
    The resistance must be measured with the steering actuator connector connected.
    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E78-1 (BMV) - E78-2 (BMU)
    		Always
    		Below 1 Ω
    E78-1 (BMV) - E78-3 (BMW)
    E78-2 (BMU) - E78-3 (BMW)
    E78-1 (BMV) - Body ground
    		Always
    		10 kΩ or higher
    E78-2 (BMU) - Body ground
    E78-3 (BMW) - Body ground
    Result
    Result
    Result    		Proceed to
    NG
    		A
    OK (for LHD)
    		B
    OK (for RHD)
    		C


B
REPLACE STEERING CONTROL ECU (Click here)

C
REPLACE STEERING CONTROL ECU (Click here)
A

REPLACE STEERING ACTUATOR ASSEMBLY (Click here)