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Home >> Subaru >> 2008 >> Outback Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 173 (Tire Pressure Monitoring System (Diagnostics)) >> Basic Diagnostic Procedure >> Procedure
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Basic Diagnostic Procedure: Procedure

WARNING: This page is about a different car, the 2008 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Remove foreign matter (dust, water, oil etc.) from the tire pressure monitoring control module connector when removing or installing.
NOTE: To check harness for broken wires or short circuits, shake the suspected trouble spot or connector.
DIAGNOSTIC CHART

Step Check Yes No
1 CHECK PRE-INSPECTION. 
  1. Check with the user regarding when the warning light lit or started blinking.
  2. Before performing diagnostics, check all components which may adversely affect the tire pressure monitor system. <Ref. to INSPECTION , General Description. >
 Is the component that might affect the tire pressure monitor system normal? Go to step 2.  Repair or replace each component.
2 CHECK DIAGNOSTIC TROUBLE CODE (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 run the Subaru Select Monitor.
    NOTE: If the communication function of the Subaru Select Monitor cannot be executed normally, check the communication circuit. <Ref. to COMMUNICATION FOR INITIALIZING IMPOSSIBLE , INSPECTION, Subaru Select Monitor. >
  4. Read the DTC. <Ref. to OPERATION , Read Diagnostic Trouble Code (DTC). >
 Is DTC displayed? Go to step 4.  Go to step 3  .
3 PERFORM GENERAL DIAGNOSTICS. 
  1. Perform the inspection by referring to "General Diagnostic Table". <Ref. to GENERAL DIAGNOSTIC TABLE . >
  2. Perform the Clear Memory Mode. <Ref. to CLEAR MEMORY , OPERATION, Subaru Select Monitor. >
  3. Perform the Inspection Mode. <Ref. to INSPECTION MODE . >
  4. Read the DTC. <Ref. to READ DIAGNOSTIC TROUBLE CODE (DTC) , OPERATION, Subaru Select Monitor. > Check that there is no DTC displayed.
 Does the tire pressure warning light illuminates for about 2 seconds and then foes off after turning on the ignition switch, and then go out? Finish the diagnosis. Check by referring to "Diagnostic Procedure for TPM'. <Ref. to WITHOUT DTC , INSPECTION, Subaru Select Monitor. >
4 PERFORM DIAGNOSIS. 
  1. Refer to "LIST OF DIAGNOSTIC TROUBLE CODE (DTC) ".
  2. Correct the cause of trouble.
  3. Perform the Clear Memory Mode. <Ref. to CLEAR MEMORY , OPERATION, Subaru Select Monitor. >
  4. Perform the drive test. Drive the vehicle at 40 km/h (25 MPH) or faster for at least 10 minutes.
  5. Read the DTC. <Ref. to READ DIAGNOSTIC TROUBLE CODE (DTC) , OPERATION, Subaru Select Monitor. >
 Is DTC displayed? Repeat steps 1 to 4 until DTC is not shown. Finish the diagnosis.
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