Dtc C15A2/62 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 (POWER SOURCE CIRCUIT)

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

CHECK STEERING ACTUATOR

CHECK DTC

DTC C15A2/62 Actuator Malfunction

DTC C15A6/62 Actuator Malfunction


DESCRIPTION

The steering control ECU drives the actuator based on steering angle sensor signals and vehicle speed signals.
If the steering control ECU detects excessive current flowing into the steering actuator, or an internal malfunction, it will turn on the master warning light, store DTC C15A2/62, and stop VGRS operation.
If the steering control ECU detects a malfunction in the motor drive circuit, it will turn the master warning light on, store DTC C15A6/62, and stop VGRS operation.

DTC Code
DTC Detection Condition
 Trouble Area
C15A2/62
The VGRS system detects a malfunction in the motor drive circuit.
  1. Harness or connector
  2. Power source circuit
  3. Steering actuator
  4. Steering control ECU
C15A6/62
The actual motor current value greatly differs from the estimated value.
  1. Power source circuit
  2. Harness or connector
  3. Steering actuator
  4. Steering control ECU

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Variable Gear Ratio Steering.Variable Gear Ratio Steering System. Dtc C15A2/62 Actuator Malfunction


INSPECTION PROCEDURE

HINT:
Only the actuator only can be checked in this procedure. If it is normal, the steering control ECU is faulty.
1.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
Land Cruiser. Urj200, 202 Grj200 Vdj200.Variable Gear Ratio Steering.Variable Gear Ratio Steering System. Dtc C15A2/62 Actuator Malfunction

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E77-7 (PGND) - Body ground
    		Always
    		Below 1 Ω
    E78-8 (PGD2) - Body ground

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    E77-8 (PIG) - Body ground
    		Always
    		11 to 14 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.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 C15A2/62 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


3.CHECK STEERING ACTUATOR


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Variable Gear Ratio Steering.Variable Gear Ratio Steering System. Dtc C15A2/62 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


NG
REPLACE STEERING ACTUATOR ASSEMBLY (Click here)
OK


4.CHECK DTC

  1. Check for DTCs (Click here).

    Result
    Result
    		Proceed to
    C15A1/61 is output
    		A
    C15A1/61 is not output (for LHD)
    		B
    C15A1/61 is not output (for RHD)
    		C


B
REPLACE STEERING CONTROL ECU (Click here)

C
REPLACE STEERING CONTROL ECU (Click here)
A

REPLACE STEERING ACTUATOR ASSEMBLY (Click here)