Subaru B9 TRIBECA WX 2007 Manual page 577

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LAN SYSTEM (DIAGNOSTICS)
1. Basic Diagnostic Procedure
A: PROCEDURE
1. WITH SUBARU SELECT MONITOR
CAUTION:
• Subaru Select Monitor is required for reading DTC, performing diagnosis and reading current data.
• Remove foreign matter (dust, water, oil, etc.) from the body integrated unit connector during re-
moval and installation.
• For model with immobilizer, registration of immobilizer may be needed after the replacement of
controller etc. For detailed procedure, refer to the REGISTRATION MANUAL FOR IMMOBILIZER.
NOTE:
• To check harness for broken wires or short circuits, shake trouble spot or connector.
• Check List for Interview <Ref. to LAN(diag)-3, Check List for Interview.>
Step
1 CHECK PRE-INSPECTION.
1) Ask the customer when and how the trouble
occurred using interview check list. <Ref. to
LAN(diag)-3, Check List for Interview.>
2) Check the display of communication error
display. (Combination meter, odo/trip meter)
2 BASIC INSPECTION
Check the components which might affect body
control. <Ref. to LAN(diag)-5, INSPECTION,
General Description.>
3 CHECK INDICATION OF DTC.
1) Read DTC of all systems. <Ref. to
LAN(diag)-12, READ DIAGNOSTIC TROUBLE
CODE (DTC), OPERATION, Subaru Select
Monitor.>
NOTE:
• The LAN system is for the overall vehicle, so
read the DTC of all systems.
• If the communication function of the Subaru
Select Monitor cannot be executed normally,
check the communication circuit. <Ref. to
LAN(diag)-31, COMMUNICATION FOR INI-
TIALIZING IMPOSSIBLE, Diagnostic Proce-
dure with Diagnostic Trouble Code (DTC).>
2) Record all DTC.
4 PERFORM GENERAL DIAGNOSTICS.
Inspect using "General Diagnostics Table".
<Ref. to LAN(diag)-83, General Diagnostic
Table.>
5 PERFORM DIAGNOSIS.
1) Correct the cause of trouble.
2) Perform the Clear Memory Mode. <Ref. to
LAN(diag)-20, CLEAR MEMORY MODE,
OPERATION, Subaru Select Monitor.>
3) Read the DTC. <Ref. to LAN(diag)-12,
READ DIAGNOSTIC TROUBLE CODE (DTC),
OPERATION, Subaru Select Monitor.>
Basic Diagnostic Procedure
Check
Is the communication error dis-
played?
Is the component that might
influence the body control prob-
lem normal?
Is a DTC other than CAN com-
munication displayed in the out-
put code?
ECM: P0600 TCM: P1718
VDCCM: C0047 or C0057, etc.
Is result of inspection OK?
Is DTC displayed?
LAN(diag)-2
Yes No
Go to step 3. Go to step 2.
Go to step 3. Repair or replace
each component.
Refer to the DTC Go to step 4.
related table. <Ref.
to LAN(diag)-30,
DTC TABLE, LIST,
List of Diagnostic
Trouble Code
(DTC).>
Go to step 5.
Go to step 5.
LAN system is nor-
mal.
Repeat step 5 until Finish the diagno-
DTC is not shown. sis.