Dtc C1595/55 Lost Communication With Steering Angle Sensor Module

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK DTC

CHECK HARNESS AND CONNECTOR ( VGRS ECU (STEERING CONTROL ECU) - STEERING SENSOR)

CHECK STEERING SENSOR

DTC C1595/55 Lost Communication with Steering Angle Sensor Module

DTC C15C4/68 Steering Angle Signal (Test Mode DTC)


DESCRIPTION

Signal transmission between the VGRS ECU (steering control ECU) and steering sensor is performed via serial communication.
If a serial communication error occurs between the VGRS ECU (steering control ECU) and steering sensor, the ECU stores DTC C1595/55.
The test mode DTC C15C4/68 is only stored during test mode.

DTC No.
DTC Detection Condition
Trouble Area
C1595/55
With the engine switch on (IG) and a power source voltage of 10 V or more, serial communication from the steering sensor is interrupted for 3 seconds or more.
  1. Steering sensor
  2. VGRS ECU (steering control ECU)
  3. Harness or connector
C15C4/68
The system enters test mode.
  1. Steering sensor
  2. VGRS ECU (steering control ECU)
  3. Harness or connector

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Variable Gear Ratio Steering.Variable Gear Ratio Steering System. Dtc C1595/55 Lost Communication With Steering Angle Sensor Module


INSPECTION PROCEDURE

NOTICE:
When replacing the VGRS ECU (steering control ECU), perform actuator angle neutral point calibration and initialization after replacement (Click here).
1.CHECK DTC

  1. Check for DTCs (Click here).

    Result
    Result
    		Proceed to
    DTCs C15C1/74, C15C2/74 and U0126/56 are not output
    		A
    DTCs C15C1/74, C15C2/74 and U0126/56 are output
    		B


B
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS (Click here)
A


2.CHECK HARNESS AND CONNECTOR ( VGRS ECU (STEERING CONTROL ECU) - STEERING SENSOR)

  1. Turn the engine switch off.

  1. Disconnect the E161 VGRS ECU (steering control ECU) connector.

  1. Disconnect the E163 steering sensor connector.

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

    Standard Resistance:

    Tester Connection
    		Condition
    		Specified Condition
    E161-5 (SS1-) - E163-9 (SS2-)
    		Always
    		Below 1 Ω
    E161-6 (SS1+) - E163-8 (SS2+)
    		Always
    		Below 1 Ω
    E161-5 (SS1-) or E163-9 (SS2-) - Body ground
    		Always
    		100 kΩ or higher
    E161-6 (SS1+) or E163-8 (SS2+) - Body ground
    		Always
    		100 kΩ or higher
    E161-5 (SS1-) - E161-6 (SS1+)
    		Always
    		1000 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK STEERING SENSOR


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Variable Gear Ratio Steering.Variable Gear Ratio Steering System. Dtc C1595/55 Lost Communication With Steering Angle Sensor Module

  1. Reconnect the E161 VGRS ECU (steering control ECU) connector.

  1. Reconnect the E163 steering sensor connector.

  1. Start the engine.

  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
    E161-5 (SS1-) - E161-6 (SS1+)
    		Steering wheel rotated slowly
    		Pulse waveform that alternates between 0 and 5 V is output
    Text in Illustration
    *a
    		Component with harness connected
    (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
REPLACE STEERING SENSOR (Click here)
A

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