WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT CAN COMMUNICATION SYSTEM
INSPECT MULTIPLEX COMMUNICATION SYSTEM
INSPECT COMBINATION METER ASSEMBLY
ELECTRONIC POWER STEERING SYSTEM - PS Warning Light does not Come ON
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.INSPECT CAN COMMUNICATION SYSTEM |
Using the intelligent tester, check for DTCs and confirm that there are no problems in the CAN communication system.
| | GO TO CAN COMMUNICATION SYSTEM |
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| 2.INSPECT MULTIPLEX COMMUNICATION SYSTEM |
Using the intelligent tester, check for DTCs and confirm that there are no problems in the multiplex communication system (BEAN).
| | GO TO MULTIPLEX COMMUNICATION SYSTEM |
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| 3.INSPECT COMBINATION METER ASSEMBLY |
Connect the intelligent tester to the DLC3.
Turn the engine switch on (IG).
Perform the Active Test according to the display on the tester.
Combination Meter:| Item | Test Details | Diagnostic Note |
| Indicat EPS | PS indicator light OFF/ON | - |
- OK:
- PS indicator light comes on.
- If replacing the power steering ECU assembly, initialize the rotation angle sensor value and calibrate the torque sensor zero point .
| | REPLACE COMBINATION METER ASSEMBLY |
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| OK | |
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| REPLACE POWER STEERING ECU ASSEMBLY |
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LEXUS IS250, IS220d / GSE20 ALE20