Subaru B9 TRIBECA WX 2007 Manual page 626

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
10 CHECK 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:
11 CHECK HARNESS.
1) Disconnect the VDCCM (B310) connector.
2) Measure the resistance between harness
connector terminals.
Connector & terminal
(B310) No. 13 — No. 29:
12 CHECK VDCCM.
1) Disconnect the VDCCM (B310) connector.
2) Measure the resistance between VDCCM
terminals.
Connector & terminal
(B310) No. 20 — No. 34:
13 CHECK ECM.
1) Disconnect the ECM connector (B136).
2) Measure the resistance between ECM con-
nector terminals.
Connector & terminal
(B136) No. 27 — No. 35:
14 CHECK HARNESS.
1) Disconnect the body integrated unit connec-
tor (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:
15 CHECK HARNESS.
1) Disconnect the body integrated unit connec-
tor (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 (–):
16 CHECK DTC.
Read the DTC of ECM using the Subaru Select
Monitor. <Ref. to EN(H6DO)(diag)-37, OPERA-
TION, Read Diagnostic Trouble Code (DTC).>
17 CHECK DTC.
Read the DTC of VDCCM using the Subaru
Select Monitor. <Ref. to VDC(diag)-15, READ
DIAGNOSTIC TROUBLE CODE (DTC),
OPERATION, Subaru Select Monitor.>
18 CHECK DTC.
Read the DTC of TCM using the Subaru Select
Monitor. <Ref. to 5AT(diag)-15, OPERATION,
Subaru Select Monitor.>
Check
Is the resistance more than 30
MΩ?
Is the resistance between 115
— 125 Ω?
Is the resistance between 115
— 125 Ω?
Is the resistance between 115
— 125 Ω?
Is the resistance less than 10
Ω?
Is the voltage 6 V or more?
Is DTC other than "CAN com-
munication" displayed?
Is DTC other than "CAN com-
munication" or "C0057" dis-
played?
Is DTC other than "CAN com-
munication" displayed?
LAN(diag)-51
LAN SYSTEM (DIAGNOSTICS)
Yes No
Open circuit in Go to step 11.
related line of body
integrated unit.
Repair the open
circuit of harness
or replace har-
ness.
Go to step 12. Go to step 13.
Go to step 13. Open circuit in end
resistance of
VDCCM. Replace
the VDCCM. <Ref.
to VDC-8, VDC
Control Module
and Hydraulic Con-
trol Unit
(VDCCM&H/U).>
Repair or replace Open circuit in end
the open circuit of resistance of ECM.
harness connec- Replace the ECM.
tor. <Ref. to
FU(H6DO)-33,
Engine Control
Module (ECM).>
Repair or replace Go to step 15.
the ground short
circuit of the har-
ness.
Go to step 16.
Repair the short
circuit of harness
or replace har-
ness.
Perform the diag- Go to step 17.
nosis according to
DTC.
Perform the diag- Go to step 18.
nosis according to
DTC.
Perform the diag- Replace the body
nosis according to integrated unit.
DTC. <Ref. to SL-51,
REMOVAL, Body
Integrated Unit.>