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Basic Diagnostic Procedure: Procedure

NOTE:
  • To check the harness for broken wires or short circuits, shake problem spot or connector.
  • Refer to CHECK LIST FOR INTERVIEW .
DIAGNOSTIC PROCEDURE CHART

Step Check Yes No
1 CHECK PRE-INSPECTION. 
  1. Ask the customer when and how the trouble occurred using the interview checklist. < Refer to CHECK LIST FOR INTERVIEW . >
  2. Before performing diagnostics, check the component which might affect VDC problems. < Refer to INSPECTION , GENERAL DESCRIPTION. >
 Is the component that might influence the VDC problem normal? Go to step 2.  Repair or replace each component.
2 CHECK INDICATION OF DTC. 
  1. Turn the ignition switch to OFF.
  2. Connect the Subaru Select Monitor to data link connector.
  3. Turn the ignition switch to ON, and the Subaru Select Monitor power switch to ON.
  4. Read the DTC. < Refer to READ DIAGNOSTIC TROUBLE CODE (DTC)  >
    NOTE: If the communication function of the Subaru Select Monitor cannot be executed normally, check the communication circuit. < Refer to COMMUNICATION FOR INITIALIZING IMPOSSIBLE , INSPECTION, SUBARU SELECT MONITOR. >
  5. Record all DTCs and freeze frame data.
 Is DTC displayed? Go to step 4.  Go to step 3  .
3 PERFORM GENERAL DIAGNOSTICS. 
  1. Inspect using "General Diagnostic Table". < Refer to INSPECTION , GENERAL DIAGNOSTIC TABLE. >
  2. Perform the clear memory mode. < Refer to OPERATION , CLEAR MEMORY MODE. >
  3. Perform the inspection mode. < Refer to PROCEDURE , INSPECTION MODE. >
  4. Read the DTC. < Refer to READ DIAGNOSTIC TROUBLE CODE (DTC) . >
  5. Check the DTC is not displayed.
 Do the VDC warning light and ABS warning light go off after starting the engine? Finish the diagnosis. Check the combination meter circuit. < Refer to ABS WARNING LIGHT DOES NOT GO OFF , WARNING LIGHT ILLUMINATION PATTERN. > < Refer to VDC WARNING LIGHT, TCS OFF INDICATOR LIGHT AND VDC INDICATOR LIGHT DO NOT COME ON , WARNING LIGHT ILLUMINATION PATTERN. >
4 PERFORM THE DIAGNOSIS. 
  1. Refer to "List of Diagnostic Trouble Code (DTC)".
    NOTE: For the DTC list, refer to "List of Diagnostic Trouble Code (DTC)". < Refer to LIST , LIST OF DIAGNOSTIC TROUBLE CODE (DTC). >
  2. Correct the cause of trouble.
  3. Perform the clear memory mode. < Refer to OPERATION , CLEAR MEMORY MODE. >
  4. Perform the inspection mode. < Refer to PROCEDURE , INSPECTION MODE. >
  5. Read the DTC. < Refer to READ DIAGNOSTIC TROUBLE CODE (DTC) . >
 Is DTC displayed? Repeat step 4 until DTC is not shown. Finish the diagnosis.
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