Dtc C1597/57 Lost Communication Between Vgrs And Eps

Steering. Lexus Gs430, Gs300. Uzs190 Grs190
Steering Column. Lexus Gs430, Gs300. Uzs190 Grs190

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK WIRE HARNESS

REPLACE POWER STEERING ECU

DTC C1597/57 Lost Communication between VGRS and EPS


DESCRIPTION

The steering control ECU receives signals from the power steering ECU via local CAN communication.
If the steering control ECU cannot receive signals from the power steering ECU correctly via local CAN communication, it will store DTC C1597/57.

DTC No.
DTC Detecting Condition
Trouble Area
C1597/57
The steering control ECU detects a reception error of signals from the power steering ECU via local CAN communication.
  1. CAN communication system (Local CAN)
  2. Power steering ECU
  3. Steering control ECU

WIRING DIAGRAM


Lexus Gs430, Gs300. Uzs190 Grs190.Steering Column.Steering System. Dtc C1597/57 Lost Communication Between Vgrs And Eps


INSPECTION PROCEDURE

1.CHECK WIRE HARNESS


    Lexus Gs430, Gs300. Uzs190 Grs190.Steering Column.Steering System. Dtc C1597/57 Lost Communication Between Vgrs And Eps

  1. Disconnect the connectors from the steering control ECU and the power steering ECU.

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

    Resistance:
    Tester connection
    		Specified condition
    A42-4 (CAN+) - A24-1 (CAN+)
    		Below 1 Ω
    A42-9 (CAN-) - A24-8 (CAN-)
    		Below 1 Ω
    A42-4 (CAN+) - A42-9 (CAN-)
    		10 kΩ or higher


NG
REPAIR OR REPLACE WIRE HARNESS
OK


2.REPLACE POWER STEERING ECU

  1. Replace the power steering ECU.

  1. Connect the connectors to the steering control ECU and the power steering ECU.

  1. Check for DTCs in the steering control ECU (Click here ).

    OK:
    DTC C1597/57 is not output.


NG
REPLACE STEERING CONTROL ECU
OK

END