Power Steering System (For 2Az-Fe) Eps Warning Light Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK FOR DTC (CAN COMMUNICATION SYSTEM)
CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - BODY GROUND)
REPLACE POWER STEERING ECU
POWER STEERING SYSTEM (for 2AZ-FE) - EPS Warning Light Circuit |
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 (COROLLA_ZRE142 RM00000275305CX.html ).
| 1.CHECK FOR DTC (CAN COMMUNICATION SYSTEM) |
Check for DTCs.
- OK:
- DTC is not output.
| 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
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| 3.REPLACE POWER STEERING ECU |
Replace the power steering ECU (COROLLA_ZRE142 RM000002XN605AX.html).
Check the P/S warning light condition.
- OK:
- P/S warning light operates normally.
