POWER STEERING SYSTEM (for 2AZ-FE) > EPS Warning Light Circuit |
for Preparation Click here
DESCRIPTION
If the power steering ECU detects a malfunction, the P/S warning light comes on. At this time, the power steering ECU stores a DTC in its memory.WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- If the steering column assembly or power steering ECU has been replaced, perform the rotation angle sensor initialization and torque sensor zero point calibration (Click here ).
1.CHECK FOR DTC (CAN COMMUNICATION SYSTEM) |
Check for DTCs.
- OK:
- DTC is not output.
|
| ||||
OK | |
2.CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - BODY GROUND) |
Disconnect the connectors from the power steering ECU.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Switch Condition Specified Condition E32-6 (IG) - A75-2 (PGND) Ignition switch on (IG) 11 to 14 V
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Switch Condition Specified Condition A75-2 (PGND) - Body ground Always Below 1 Ω
|
| ||||
A | |
3.REPLACE POWER STEERING ECU |
Replace the power steering ECU (Click here).
Check the P/S warning light condition.
- OK:
- P/S warning light operates normally.
|
| ||||
OK | ||
|