Subaru LEGACY 2006 Manual page 4132

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TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS)
1. Basic Diagnostic Procedure
A: PROCEDURE
CAUTION:
Remove foreign matter (dust, water, oil etc.) from the tire pressure monitoring control module con-
nector when removing or installing.
NOTE:
To check harness for broken wires or short circuits, shake the suspected trouble spot or connector.
Step
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
TPM(diag)-3, INSPECTION, General Descrip-
tion.>
2 CHECK DIAGNOSTIC TROUBLE CODE
(DTC).
1) Turn the ignition switch to OFF.
2) Connect the Subaru Select Monitor to the
data link connector.
3) Turn the ignition switch to ON and Subaru
Select Monitor to ON.
NOTE:
If the communication function of the Subaru Se-
lect Monitor cannot be executed normally,
check the communication circuit. <Ref. to
TPM(diag)-11, COMMUNICATION FOR INI-
TIALIZING IMPOSSIBLE, INSPECTION, Sub-
aru Select Monitor.>
4) Read the DTC. <Ref. to TPM(diag)-16,
OPERATION, Read Diagnostic Trouble Code
(DTC).>
3 PERFORM GENERAL DIAGNOSTICS.
1) Perform the inspection by referring to "Gen-
eral Diagnostic Table". <Ref. to TPM(diag)-38,
General Diagnostic Table.>
2) Perform Clear Memory Mode. <Ref. to
TPM(diag)-9, CLEAR MEMORY, OPERATION,
Subaru Select Monitor.>
3) Perform Inspection Mode. <Ref. to
TPM(diag)-17, Inspection Mode.>
4) Read the DTC. <Ref. to TPM(diag)-8,
READ DIAGNOSTIC TROUBLE CODE (DTC),
OPERATION, Subaru Select Monitor.>
Check that there is no DTC displayed.
4 PERFORM DIAGNOSIS.
1) Refer to "List of Diagnostic Trouble Code
(DTC)."
2) Correct the cause of trouble.
3) Perform Clear Memory Mode. <Ref. to
TPM(diag)-9, CLEAR MEMORY, OPERATION,
Subaru Select Monitor.>
4) Perform the drive test.
Drive the vehicle at a speed more than 40 km/h
(25 MPH) for at least 10 minutes.
5) Read the DTC. <Ref. to TPM(diag)-8,
READ DIAGNOSTIC TROUBLE CODE (DTC),
OPERATION, Subaru Select Monitor.>
Basic Diagnostic Procedure
Check
Is the component that might
affect the tire pressure monitor
system normal?
Is DTC displayed?
Does the tire pressure warn-
ing light illuminates for about 2
seconds and then foes off after
turning on the ignition switch,
and then go out?
Is DTC displayed?
TPM(diag)-2
Yes No
Go to step 2. Repair or replace
each component.
Go to step 4. Go to step 3.
Finish the diagno- Check by referring
sis. to "Diagnostic Pro-
cedure for
TPM"<Ref. to
TPM(diag)-14,
WITHOUT DTC,
INSPECTION,
Subaru Select
Monitor.>
Repeat steps 1 to Finish the diagno-
4 until DTC is not sis.
shown.