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) |
Inspection
INSPECTION
PROCEDURE
1. INSPECT FRONT POWER SEAT SWITCH LH
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Slide Switch
Tester Connection
Switch Condition
Specified Conditi ...
Torque Converter Clutch Pressure Control Solenoid Performance (Shift Solenoid
Valve SLU) (P2757)
DESCRIPTION
The ECM uses the signals from the throttle position sensor, air-flow meter, turbine
(input) speed sensor, output speed sensor and crankshaft position sensor to monitor
the engagement condition of the lock-up clutch.
Then the ECM compares th ...