DESCRIPTION
The power steering ECU assembly receives engine speed signals from the ECM via CAN communication. The power steering ECU assembly 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. |
|
PROCEDURE
1. |
CHECK OTHER DTC OUTPUT (CAN COMMUNICATION SYSTEM) |
(a) Check if DTC U0100 is output (See page ).
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 |
GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
|
2. |
CHECK OTHER DTC OUTPUT (SFI SYSTEM) |
(a) Using the Techstream, check for DTCs and confirm that there are no problems in the SFI system (See page ).
Result |
Proceed to |
---|---|
DTC is not output |
A |
DTC is output |
B |
A |
REPLACE POWER STEERING ECU ASSEMBLY |
B |
GO TO SFI SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) |
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE HOOD TO RADIATOR SUPPORT SEAL
(a) Using a clip remover, remove the 7 clips and hood to radiator support
seal.
NOTICE:
If the clips are damaged or fall off, replace them with new clips.
...
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms. If multiple
suspected areas are listed, the potential causes of the symptoms are listed in order
of probability in the "Suspected Area" column of ...