Dtc C1544 High Engine Revolution Signal

Steering. Land Cruiser. Urj200, 202 Grj200 Vdj200
Power Assist Systems. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

INSPECTION PROCEDURE

CHECK OTHER DTC OUTPUT (CAN COMMUNICATION SYSTEM)

CHECK OTHER DTC OUTPUT (ECD SYSTEM)

DTC C1544 High Engine Revolution Signal


DESCRIPTION

The power steering ECU receives engine speed signals from the ECM via CAN communication. The power steering ECU provides appropriate assisting force in accordance with the engine speed signal.

DTC Code
DTC Detection Condition
Trouble Area
C1544
An abnormal engine speed signal is received.
  1. ECD system
  2. CAN communication system
  3. Power steering ECU assembly

INSPECTION PROCEDURE

1.CHECK OTHER DTC OUTPUT (CAN COMMUNICATION SYSTEM)

  1. Check if DTC U0100 is output (Click here).

    Result
    Result
    		Proceed to
    DTC U0100 is not output.
    		A
    DTC U0100 is output.
    		B

    HINT:
    DTC U0100 indicates a CAN communication malfunction in the power steering system.


B
REPAIR CIRCUIT INDICATED BY OUTPUT CODE (Click here)
A


2.CHECK OTHER DTC OUTPUT (ECD SYSTEM)

  1. Using the GTS, check for DTCs and confirm that there are no problems in the ECD system (Click here).

    Result
    Result
    		Proceed to
    DTC is not output.
    		A
    DTC is output.
    		B



B
GO TO ECD SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) (Click here)
A

REPLACE POWER STEERING ECU ASSEMBLY (Click here)