Toyota Corolla Cross: EPS Warning Light Circuit
DESCRIPTION
Use the following procedure if no DTCs are output but the EPS warning light is illuminated continuously.
The power steering ECU assembly controls the warning light in the combination meter assembly via CAN communication.
CAUTION / NOTICE / HINT
NOTICE:
When the power steering ECU assembly has been replaced, perform Power Steering ECU Initial Setting (assist map writing).
Click here .gif)
PROCEDURE
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1. |
CHECK VEHICLE CONTROL HISTORY (POWER STEERING SYSTEM) |
(a) Enter the following menus: Chassis / EMPS / Utility / Vehicle Control History (RoB).
Chassis > EMPS > Utility|
Tester Display |
|---|
|
Vehicle Control History (RoB) |
HINT:
The EPS warning light illuminates if any vehicle control history is stored.
|
Result |
Proceed to |
|---|---|
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Vehicle control history not stored for power steering ECU assembly |
A |
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Vehicle control history stored for power steering ECU assembly |
B |
| B | .gif) |
PERFORM TROUBLESHOOTING AND REPAIR REGARDING VEHICLE CONTROL HISTORY Click here NOTICE: After performing troubleshooting and repair regarding vehicle control history, clear the vehicle control history. |
|
.gif)
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2. |
INSPECT COMBINATION METER ASSEMBLY |
(a) Perform the Active Test of the combination meter assembly using the GTS.
Body Electrical > Combination Meter > Active Test|
Tester Display |
|---|
|
EPS Warning |
(b) Check the combination meter assembly.
OK:
The EPS warning light turns on or off in accordance with the GTS operation.
| OK | |
REPLACE POWER STEERING ECU ASSEMBLY |
| NG | |
GO TO METER / GAUGE SYSTEM |
READ NEXT:
Abnormal Feel at Steering End Position
SYSTEM DESCRIPTION
This vehicle employs end position contact shock reduction control for column
EPS, designed to protect components by suppressing torque input when steering mechanism
components
SEE MORE:
Differential Oil
Components
COMPONENTS
ILLUSTRATION
*1
REAR DIFFERENTIAL FILLER PLUG
*2
REAR DIFFERENTIAL DRAIN PLUG
*3
GASKET
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-
N*m (kgf*cm, ft.*lbf): Specified torque
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Control Module Communication Bus Off (U0073,U0100,U0126,U0129)
DESCRIPTION
When the signal sent from the 4WD ECU assembly does not finish sending, the 4WD
ECU assembly stores a DTC.
When a malfunction occurs in communication with the ECM, skid control ECU (brake
actuator assembly) and steering sensor, the 4WD ECU assembly stores a DTC.
DTC No.
