POWER STEERING SYSTEM PS Warning Light Remains ON

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.

INSPECTION PROCEDURE

PROCEDURE

1. Click here

   CHECK HARNESS AND CONNECTOR

   
   

   1. Turn the engine switch on (IG).

   2. Check the indication condition of the P/S warning light by wiggling the power steering ECU connector and wire harness up and down, and right and left.

      OK
      P/S warning light indication condition does not change.

   
   
   • OKClick here
   • NGClick here
2. Click here

   CHECK FOR DTC (CAN COMMUNICATION SYSTEM)

   
   

   1. Check for DTCs (Click here).

      OK
      DTC is not output.

   
   
   • OKClick here
   • NGClick here
3. Click here

   CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - BODY GROUND)

   
   
   1. 

      Disconnect the connectors from the power steering ECU.

   2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition G18-6 (IG) - Body ground Engine switch on (IG) 11 to 14 V

   3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition A20-2 (PGND) - Body ground Always Below 1 Ω

   
   
   • OKClick here
   • NGClick here
4. Click here

   REPLACE POWER STEERING ECU

   
   

   1. Replace the power steering ECU (Click here).

   2. Check the P/S warning light condition.

      OK
      P/S warning light comes on for approximately 3 seconds and goes off.

   
   
   • OKClick here
   • NGClick here
5. Click here

   REPLACE COMBINATION METER ASSEMBLYClick here

6. Click here

   REPAIR OR REPLACE HARNESS OR CONNECTOR

7. Click here

   END

8. Click here

   GO TO CAN COMMUNICATION SYSTEMClick here