2009 SUBARU TRIBECA Service Workshop Manual

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Page 513 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual LAN(diag)-57
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
Step Check Yes No
1CHECK HARNESS.
1) Disconnect the body integrated unit con-
nector (B280).
2) Measure th

LAN(diag)-57
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
Step Check Yes No
1CHECK HARNESS.
1) Disconnect the body integrated unit con-
nector (B280).
2) Measure the resistance between harness
connectors.
Connector & terminal
(B280) No. 20 — No. 30:
Is the resistance 55 — 65 Ω?
(Specification 60 Ω)
Read the DTC of
ECM. Perform the
diagnosis accord-
ing to DTC. to
EN(H6DO)(diag)-
26, READ DIAG-
NOSTIC TROU-
BLE CODE (DTC)
FOR ENGINE
(NORMAL
MODE), OPERA-
TION, Subaru
Select Monitor.>
Go to step 2.
2CHECK HARNESS.
1) Disconnect the body integrated unit con-
nector (B280).
2) Measure the resistance between harness
connectors.
Connector & terminal
(B280) No. 20 — No. 30:
Is the resistance 115 — 125Ω?
(End resistance or main wiring
harness is open.)
Go to step 3.Related line of
body integrated
unit is open when
∞ Ω. Repair the
open circuit of har-
ness or replace
harness.
3CHECK HARNESS.
1) Disconnect the ECM connector (B136).
2) Measure the resistance between harness
connector terminals.
Connector & terminal
(B136) No. 27 — No. 35:
Is the resistance 115 — 125
Ω? (End resistance specifica-
tion 120 Ω)
Go to step 4.Go to step 5.
4CHECK ECM.
1) Disconnect the ECM connector (B136).
2) Measure the resistance between ECM ter-
minals.
Connector & terminal
(B136) No. 27 — No. 35:
Is the resistance between 115
— 125 Ω?
Read the DTC of
ECM. Perform the
diagnosis accord-
ing to DTC. to
EN(H6DO)(diag)-
26, READ DIAG-
NOSTIC TROU-
BLE CODE (DTC)
FOR ENGINE
(NORMAL
MODE), OPERA-
TION, Subaru
Select Monitor.>
End resistance is
open. Replace the
ECM. FU(H6DO)-32,
Engine Control
Module (ECM).>
5CHECK HARNESS.
1) Disconnect the ECM connector (B137).
2) Measure the resistance between harness
connector and chassis ground.
Connector & terminal
(B136) No. 27 — Chassis ground:
(B136) No. 35 — Chassis ground:
Is the resistance less than 10
Ω?
Repair the short
circuit of harness
or replace har-
ness.
Go to step 6.

Page 514 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual LAN(diag)-58
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
6CHECK HARNESS.
1) Disconnect the body integrated unit (B280),
ECM (B136), TCM (B54), VDC CU (B310) and

Page 515 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual LAN(diag)-59
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
O: DTC B0222 CAN-HS TCM NO-RECEIVE DATA
DTC DETECTING CONDITION:
TCM has error, harness between the main h

Page 516 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual LAN(diag)-60
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
Step Check Yes No
1CHECK HARNESS.
1) Disconnect the TCM connector (B54).
2) Measure the resistance between

Page 517 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual LAN(diag)-61
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
P: DTC B0223 CAN-HS VDC/ABS NO-RECEIVE DATA
DTC DETECTING CONDITION:
Defective VDC CM. (If error is in the

Page 518 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual LAN(diag)-62
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
Step Check Yes No
1CHECK HARNESS.
1) Disconnect the harness connector of body
integrated unit.
2) Measure

LAN(diag)-62
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
Step Check Yes No
1CHECK HARNESS.
1) Disconnect the harness connector of body
integrated unit.
2) Measure the resistance between harness
connector terminals.
Connector & terminal
(B280) No. 20 — No. 30:
Is the resistance between 55
— 65 Ω?
Read the DTC of
VDC CM, and per-
for m the diagnosis
according to DTC.
Go to step 2.
2CHECK HARNESS.
1) Disconnect the harness connector of body
integrated unit.
2) Measure the resistance between harness
connector terminals.
Connector & terminal
(B280) No. 20 — No. 30:
Is the resistance between 115
— 125 Ω?
Go to step 5.Go to step 3.
3CHECK HARNESS.
1) Disconnect the harness connector of body
integrated unit.
2) Measure the resistance between harness
connector terminal and chassis ground.
Connector & terminal
(B280) No. 20 — Chassis ground:
(B280) No. 30 — Chassis ground:
Is the resistance ∞ Ω?Open circuit in
related line of body
integrated unit.
Repair the open
circuit of harness
or replace har-
ness.
Go to step 4.
4CHECK HARNESS.
1) Disconnect the harness connector of body
integrated unit.
2) Measure the voltage between harness con-
nector terminal and chassis ground. (Ignition
switch ON)
Connector & terminal
(B280) No. 20 (+) — Chassis ground (–):
(B280) No. 30 (+) — Chassis ground (–):
Is the voltage more than 6 V? Repair the short
circuit of harness
or replace har-
ness.
Go to step 5.
5CHECK END RESISTANCE.
1) Disconnect the VDC CM harness connec-
tor.
2) Measure the resistance between VDC CM
connector terminals.
Connector & terminal
(B310) No. 20 — No. 34:
Is the resistance between 115
— 125 Ω?
Go to step 6.End resistance is
open. Replace the
VDC CM. VDC-7, VDC Con-
trol Module &
Hydraulic Control
Unit (VDCCM&H/
U).>
6CHECK HARNESS.
1) Disconnect the body integrated unit con-
nector (B280) and VDC CM connector (B310).
2) Measure the resistance between harness
connector terminals.
Connector & terminal
(B310) No. 13 — (B280) No. 20:
(B310) No. 29 — (B280) No. 30:
Is the resistance less than 10
Ω?
Go to step 7.Main wiring har-
ness is open.
Repair the open
circuit of harness
or replace har-
ness.
7CHECK VDC CM.
1) Connect all the connectors.
2) Read the DTC of VDC CM using Subaru
Select Monitor.
Is DTC other than “CAN com-
munication” displayed?
Pe r for m t h e d ia g -
nosis according to
DTC concerning
VDC CM.
Replace the VDC
CM. 7, VDC Control
Module & Hydrau-
lic Control Unit
(VDCCM&H/U).>

Page 519 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual LAN(diag)-63
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
Q: DTC B0300 CAN-LS MALFUNCTION
DTC DETECTING CONDITION:
Either end of low-speed CAN communication line is

Page 520 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual LAN(diag)-64
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
2CHECK HARNESS.
1) Disconnect the combination meter connec-
tor.
2) Measure the resistance between junctio

LAN(diag)-64
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
2CHECK HARNESS.
1) Disconnect the combination meter connec-
tor.
2) Measure the resistance between junction
connector and combination meter connector.
Connector & terminal
(i10) No. A29 — (i77) No. 1 to 6:
(i10) No. A30 — (i77) No. 7 to 12:
Is the resistance less than 10
Ω?
Go to step 3.Repair the open
circuit of harness
or replace har-
ness.
3CHECK HARNESS.
1) Disconnect the body integrated unit con-
nector (B280) and Auto A/C control module
connector (B283).
2) Measure the resistance between body inte-
grated unit connector and auto A/C control
module connector.
Connector & terminal
(B283) No. 1 — (B280) No. 26:
(B283) No. 14 — (B280) No. 25:
Is the resistance less than 10
Ω?
Go to step 4.Repair the open
circuit of harness
or replace har-
ness.
4CHECK HARNESS.
1) Connect the junction connector.
2) Measure the resistance between body inte-
grated unit connector and chassis ground.
Connector & terminal
(B280) No. 25 — Chassis ground:
(B280) No. 26 — Chassis ground:
(i84) No. 26 — Chassis ground:
(i84) No. 27 — Chassis ground:
Is the resistance less than 10
Ω?
Repair the short
circuit of harness
or replace har-
ness.
Go to step 5.
5CHECK HARNESS.
1) Turn the ignition switch to ON.
2) Measure the voltage between body inte-
grated unit connector and chassis ground.
Connector & terminal
(B280) No. 25 (+) — Chassis ground (–):
(B280) No. 26 (+) — Chassis ground (–):
(i84) No. 26 (+) — Chassis ground (–):
(i84) No. 27 (+) — Chassis ground (–):
Is the voltage more than 6 V? Repair the short
circuit of harness
or replace har-
ness.
Go to step 6.
6CHECK AUTO A/C.
Perfor m the auto A/C self-diagnosis. AC(diag)-13, A/C CONTROL SYSTEM SELF-
DIAGNOSIS, OPERATION, Diagnostic Chart
for Self-diagnosis.>
Is the self-diagnosis OK? Go to step 7.Replace the auto
A/C control mod-
ule. 32, REMOVAL,
Control Unit (Auto
A/C Model).>
7CHECK COMBINATION METER.
1) Connect all the connectors.
2) Turn the ignition switch to ON.
3) Check the display of combination meter,
odo/trip.
Is “Er SS” and “Er SP” dis-
played?
Replace the body
integrated unit.
REMOVAL, Body
Integrated Unit.>
Replace the com-
bination meter.
REMOVAL, Com-
bination Meter.>
Step Check Yes No

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