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 |
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Vehicle Control History (RoB) |
HINT:
The EPS warning light illuminates if any vehicle control history is stored.
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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. |
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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:
Precaution
PRECAUTION PRECAUTIONS WHEN INSPECTING STOP AND START SYSTEM
NOTICE: When the audio and visual system volume is high, a fail-safe function may operate in order to maintain the operation of stop and start control. The fail-safe function is canceled when the ignition switch is turned off. Using the
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Lighting System
DTC No. Detection Item
Link B124400
Light Sensor Circuit Malfunction
B243900 Headlight LH Circuit
B243A00 Headlight RH Circuit
B24441C Low Beam LH Circuit Voltage Out of Range
