Subaru B9 TRIBECA WX 2007 Manual page 635

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
Step
8 CHECK ECM.
1) Disconnect the ECM connector (B136).
2) Measure the resistance between ECM ter-
minals.
Connector & terminal
(B136) No. 27 — No. 35:
9 CHECK 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:
10 CHECK HARNESS.
1) Disconnect the body integrated unit (B280),
ECM (B136), TCM (B54), VDCCM (B310) and
yaw rate sensor (B359) connectors.
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 (–):
Check
Is the resistance between 115
— 125 Ω?
Is the resistance less than 10
Ω?
Is the voltage 6 V or more?
LAN(diag)-60
Yes No
Read the DTC of End resistance is
ECM. Perform the open. Replace the
diagnosis accord- ECM. <Ref. to
ing to the DTC. FU(H6DO)-33,
<Ref. to Engine Control
EN(H6DO)(diag)- Module (ECM).>
28, READ DIAG-
NOSTIC TROU-
BLE CODE (DTC)
FOR ENGINE
(NORMAL
MODE), OPERA-
TION, Subaru
Select Monitor.>
Repair the short Go to step 10.
circuit of harness
or replace har-
ness.
Repair or replace Read the DTC of
the short circuit of ECM. Perform the
the harness. diagnosis accord-
ing to the DTC.
<Ref. to
EN(H6DO)(diag)-
28, READ DIAG-
NOSTIC TROU-
BLE CODE (DTC)
FOR ENGINE
(NORMAL
MODE), OPERA-
TION, Subaru
Select Monitor.>