VARIABLE GEAR RATIO STEERING SYSTEM, Diagnostic DTC:C15B4/71

DESCRIPTION

If the steering control ECU detects an internal malfunction, it will turn the master warning light on, store DTC C15B4/71, and stop VGRS operation.

INSPECTION PROCEDURE

PROCEDURE

1. Click here

   CHECK MASTER WARNING LIGHT

   
   

   1. Check the conditions under which the master warning light comes on.

      Table 1. Result

      Result	Proceed to
      The engine stalled, battery voltage is too low, or the steering control ECU connector is disconnected.	A
      Conditions other than above (for LHD).	B
      Conditions other than above (for RHD).	C

   
   
   • AClick here
   • BClick here
   • CClick here
2. Click here

   CLEAR DTC

   
   

   1. Clear the DTCs (Click here).

   
   
   • NEXTClick here
3. Click here

   PERFORM VGRS SYSTEM CALIBRATION

   
   

   1. Perform VGRS system calibration (Click here).

   
   
   • NEXTClick here
4. Click here

   CHECK DTC

   
   

   1. Check for DTCs (Click here).

      Table 2. Result

      Result	Proceed to
      DTC is not output	A
      C15B4/71 is output (for LHD)	B
      C15B4/71 is output (for RHD)	C

   
   
   • AClick here
   • BClick here
   • CClick here
5. Click here

   USE SIMULATION METHOD TO CHECKClick here

6. Click here

   REPLACE STEERING CONTROL ECUClick here

7. Click here

   REPLACE STEERING CONTROL ECUClick here