Subaru LEGACY 2004 Service Manual page 749

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
B: DIAGNOSTIC TROUBLE CODE (DTC) IS NOT STORED
DTC DETECTING CONDITION:
Defective combination meter
DIAGNOSIS:
• Freeze frame data in odo/trip meter is not cleared.
• "No trouble code" is displayed on Subaru Select Monitor.
NOTE:
If DTC is not displayed on Subaru Select Monitor, LAN communication System should be OK.
Step
1 CHECK FREEZE FRAME DATA WITH COM-
BINATION METER.
Turn the ignition switch to ON.
2 CHECK COMBINATION METER.
Perform the self-diagnosis of combination
meter.
3 CHECK BODY INTEGRATED UNIT.
1) Display the current data of ECM using Sub-
aru Select Monitor.
2) Check data of "body integrated unit data
received".
4 CHECK BODY INTEGRATED UNIT.
1) Display the current data of ECM using Sub-
aru Select Monitor.
2) Check data of "body integrated unit counter
update".
C: DTC B0100 INTEG. UNIT SYSTEM ERROR
DTC DETECTING CONDITION:
System error in body integrated unit
TROUBLE SYMPTOM:
• Check light comes on in the combination meter, and displays freeze frame data "Er IU".
• LAN communication immobilizer function may not be executed normally.
Step
1 CHECK ALL DTCS.
2 CHECK DTC CONCERNING ECM.
Check
Is the freeze frame data dis-
played?
Is combination meter OK?
Is the "Yes" displayed?
Is the "Yes" displayed?
Check
Is DTC concerning ECM dis-
played?
Is output DTC on ECM con-
cerning CAN communication
error?
LAN(diag)-33
LAN SYSTEM (DIAGNOSTICS)
Yes
Perform the diag- Go to step 2.
nosis according to
freeze frame data.
Go to step 3. Replace the com-
bination meter.
<Ref. to IDI-16,
Combination
Meter Assembly.>
Go to step 4. Replace the body
integrated unit.
<Ref. to SL-46,
Body Integrated
Unit.>
Repair the poor Replace the body
contact connector. integrated unit.
<Ref. to SL-46,
Body Integrated
Unit.>
Yes
Go to step 2. Replace the body
integrated unit.
<Ref. to SL-46,
Body Integrated
Unit.>
Replace the body Perform the diag-
integrated unit. nosis according to
<Ref. to SL-46, DTC concerning
Body Integrated ECM.
Unit.>
No
No