2009 SUBARU TRIBECA check engine

LAN(diag)-49
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
19 CHECK CONTROL MODULE.
1) Connect all the control module connectors.
2) Check the data of “body integrated unit
data received” on the current data display of
ECM using Subaru Select Monitor.
Is the “Yes” displayed? Go to step 20.Replace the body
integrated unit.
REMOVAL, Body
Integrated Unit.>
20 CHECK CONTROL MODULE.
Check the data of “body integrated unit counter
update” on the data display of ECM.
Is the “Yes” displayed? Replace the ECM.
FU(H6DO)-32,
Engine Control
Module (ECM).>
Replace the body
integrated unit.
REMOVAL, Body
Integrated Unit.>
Step Check Yes No

LAN(diag)-51
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
2CHECK STEERING ANGLE SENSOR.
1) Disconnect the steering angle sensor con-
nector (B231).
2) Perform the clear memory mode of body
integrated unit. MEMORY MODE, OPERATION, Subaru
Select Monitor.>
3) Read DTC of body integrated unit.
Is DTC (B0202) displayed? Go to step 3.Replace the steer-
ing angle sensor.
REPLACEMENT,
Steering Angle
Sensor.>
3CHECK YAW RATE SENSOR
1) Disconnect the yaw rate sensor connector
(B359).
2) Perform the clear memory mode of body
integrated unit.
3) Read DTC of body integrated unit.
Is DTC (B0202) displayed? Go to step 4.Replace the yaw
rate sensor. to VDC-18,
REMOVAL, Yaw
Rate & Lateral G
Sensor.>
4CHECK THE BODY INTEGRATED UNIT.
1) Disconnect the body integrated unit con-
nector (B280).
2) Read the data between VDC/ABSCM and
ECM.
Check item:
•Engine speed
•Average front wheel speed (value on con-
stant driving)
Engine speed and front wheel
speed are correctly communi-
cated. (Appears same value)
Replace the body
integrated unit.
Body Integrated
Unit.>
Go to step 5.
5CHECK HARNESS.
1) Disconnect the body integrated unit con-
nector (B280).
2) Measure the resistance between harness
connector terminals.
Connector & terminal
(B280) No. 20 — No. 30:
Is the resistance between 55
— 65 Ω?
Go to step 11.Go to step 6.
6CHECK HARNESS.
1) Disconnect the body integrated unit con-
nector (B280).
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 8.Go to step 7.
7CHECK 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 more than 30
MΩ?
Open circuit in
related line of body
integrated unit.
Repair the open
circuit of harness
or replace har-
ness.
Go to step 8.
8CHECK HARNESS.
1) Disconnect the VDC CM (B310) connector.
2) Measure the resistance between harness
connector terminals.
Connector & terminal
(B310) No. 13 — No. 29:
Is the resistance between 115
— 125 Ω?
Go to step 9.Go to step 10.
9CHECK VDC CM.
1) Disconnect the VDC CM (B310) connector.
2) Measure the resistance between VDC CM
terminals.
Connector & terminal
(B310) No. 20 — No. 34:
Is the resistance between 115
— 125 Ω?
Go to step 10.Open circuit in end
resistance of VDC
CM. Replace the
VDC CM. VDC-7, VDC Con-
trol Module &
Hydraulic Control
Unit (VDCCM&H/
U).>
Step Check Yes No

LAN(diag)-52
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
10 CHECK ECM.
1) Disconnect the ECM connector (B136).
2) Measure the resistance between ECM con-
nector terminals.
Connector & terminal
(B136) No. 27 — No. 35:
Is the resistance between 115
— 125 Ω?
Repair or replace
the open circuit of
harness connec-
tor.
Open circuit in end
resistance of
ECM. Replace the
ECM. FU(H6DO)-32,
Engine Control
Module (ECM).>
11 CHECK HARNESS.
1) Disconnect the body integrated unit con-
nector (B280).
2) Measure the resistance between body inte-
grated unit connector and chassis ground.
Connector & terminal
(B280) No. 20 — Chassis ground:
(B280) No. 30 — Chassis ground:
Is the resistance less than 10
Ω?
Repair or replace
the ground short
circuit of the har-
ness.
Go to step 12.
12 CHECK HARNESS.
1) Disconnect the body integrated unit con-
nector (B280).
2) Measure the voltage between body inte-
grated unit connector and chassis ground.
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 13.
13 CHECK DTC.
Read the DTC of ECM using Subaru Select
Monitor. AT I O N , R e a d D i a g n o s t i c Tr o u b l e C o d e
(DTC).>
Is DTC other than “CAN com-
munication” displayed?
Pe r for m t h e d ia g -
nosis according to
DTC.
Go to step 14.
14 CHECK DTC.
Read the DTC of VDC CM using Subaru
Select Monitor. DIAGNOSTIC TROUBLE CODE (DTC),
OPERATION, Subaru Select Monitor.>
Is DTC other than “CAN com-
munication” or “C0057” dis-
played?
Pe r for m t h e d ia g -
nosis according to
DTC.
Go to step 15.
15 CHECK DTC.
Read the DTC of TCM using Subaru Select
Monitor. 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.
Replace the body
integrated unit.
REMOVAL, Body
Integrated Unit.>
Step Check Yes No

LAN(diag)-53
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
K: DTC B0211 CAN-HS ECM DATA ABNORMAL
DTC DETECTING CONDITION:
Defective data from ECM.
TROUBLE SYMPTOM:
“Er HC” or “Er EG” is displayed in odo/trip meter.
WIRING DIAGRAM:
VDCCM & H/U
B310
B20B30
BODY INTEGRATEDUNIT
B280B:
TCM
B54A:
23
B359
YAW R AT ESENSOR
34
20
B231
21
STEERING ANGLESENSOR
B231
1234
B54A:
12 7 8 9563410 11 1219 20 2113 14 15 16 17 1822 23 24
B136B310
B280B:
5467821931022 23111213141524 25 26 2716171828 29192021 30
ECM
B136
27
35
A3A4
TWISTED PAIR LINE
12345678910 11 12 13 14
15 16 17 18 19 2021 22 23 24 25 26 27 2829 30 31 32 33 3435 36 37 38 39403940
27 28394016101112131415252430
9871718192028212223293231
123456
2726333435
LAN00191
Step Check Yes No
1CHECK ECM.
Read the DTC of ECM using Subaru Select
Monitor. AT I O N , R e a d D i a g n o s t i c Tr o u b l e C o d e
(DTC).>
Is DTC other than “CAN com-
munication” displayed?
Pe r for m t h e d ia g -
nosis according to
DTC.
Replace the ECM.
FU(H6DO)-32,
Engine Control
Module (ECM).>

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.

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
Ya w r a t e s e n s o r ( B 3 5 9 ) c o n n e c t o r s .
2) Measure the voltage between harness con-
nector and chassis ground while turning the
ignition switch to ON.
Connector & terminal
(B280) No. 20 (+) — Chassis ground (–):
(B280) No. 30 (+) — Chassis ground (–):
Is the voltage more than 6 V? Repair or replace
the short circuit of
the harness.
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.>
Step Check Yes No

LAN(diag)-72
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
V: DTC B0321 CAN-LS METER NO-RECEIVE DATA
DTC DETECTING CONDITION:
Combination meter unit error, or harness between the main harness splice and combination meter unit is
open or shorted, the connector is not connected properly and the terminal has poor caulking.
TROUBLE SYMPTOM:
Fail mode occurs because the data is not received from combination meter unit.
WIRING DIAGRAM:
LAN00192
TO POWER SUPPLY CIRCUITFB-10M/B FUSE NO.28 (P)
1
4
3
7
A9
A4
5
BODY INTEGRATED UNIT
ILLUMINATION & BACK-UPJOINT CONNECTOR
KEYLESS ENTRY CONTROL MODULE
i84
i99
i99
i96
E
i84i96i99
123456789101112131415161718192021222324252627282930313233343510 11 12349561728
12345678
Step Check Yes No
1CHECK COMMUNICATION LINE.
1) Warm up the engine.
2) Compare the data of body integrated unit
and combination meter using Subaru Select
Monitor.
Check item:
•Engine speed
•Shift range
Is the data displayed same? Go to step 2.Perform the self-
diagnosis of com-
bination meter.
SELF-DIAGNO-
SIS, INSPEC-
TION,
Combination
Meter System.>

LAN(diag)-76
General Diagnostic Table
LAN SYSTEM (DIAGNOSTICS)
13.General Diagnostic Table
A: INSPECTION
Read the DTC or inspect and diagnose the following data in the current data display using Subaru Select
Monitor.
1. LAN SYSTEM
Item OperationSpecificationsNoteYES NO
Diagnostic codeDTC is not displayed when inspect-
ing all DTCs.
DTC is not dis-
played.
Perfor m the diag-
nosis according to
DTC.
Refer to the DTC table
when there are trouble
codes of the CAN commu-
nication system for a mul-
tiple of modules. LAN(diag)-31, FUNC-
TION CHECK, DTC
TA B L E , L i s t o f D i a g n o s t i c
Tr o u b l e C o d e ( D T C ) . >
Coolant Temp.
Check the current data display of
ECM, TCM and body integrated
unit. Three data value are the
same.
Same valuesInspect LAN sys-
tem.
If engine coolant tempera-
ture sensor is not OK,
inspect the sensor circuit.
R defogger SWIt turns to ON when pressing
switch. (Low-speed CAN is OK)Tu r n s t o O N .Inspect rear defog-
ger switch.
Rear defogger switch is
connected with Low-
speed CAN.
R defogger output When switch input, it is output. OutputReplace the body
integrated unit.
If not operating with out-
put, check the rear defog-
ger relay.
Door lock SWWhen locked with door lock switch,
it turns to ON.Tu r n s t o O N .Inspect door lock
switch.

Door lock actuatorWhen locked with door lock switch,
it is output.OutputReplace the body
integrated unit.—