2009 SUBARU TRIBECA relay

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Page 1221 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual EN(H6DO)(diag)-60
Diagnostics for Engine Starting Failure
ENGINE (DIAGNOSTICS)
8CHECK STARTER RELAY.
1) Connect the battery to starter relay termi-
nals No. 15 and No. 16.
2) Measure the resistance be

Page 1222 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual EN(H6DO)(diag)-61
Diagnostics for Engine Starting Failure
ENGINE (DIAGNOSTICS)
C: CHECK POWER SUPPLY AND GROUND LINE OF ENGINE CONTROL MOD-
ULE (ECM)
CAUTION:
After repair or replacement of faulty par

Page 1223 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual EN(H6DO)(diag)-62
Diagnostics for Engine Starting Failure
ENGINE (DIAGNOSTICS)
2CHECK GROUND CIRCUIT FOR ECM.
1) Disconnect the connectors from ECM.
2) Measure the resistance of harness
between ECM a

EN(H6DO)(diag)-62
Diagnostics for Engine Starting Failure
ENGINE (DIAGNOSTICS)
2CHECK GROUND CIRCUIT FOR ECM.
1) Disconnect the connectors from ECM.
2) Measure the resistance of harness
between ECM and chassis ground.
Connector & terminal
(B134) No. 3 — Chassis ground:
(B134) No. 5 — Chassis ground:
(B137) No. 1 — Chassis ground:
(B137) No. 2 — Chassis ground:
(B137) No. 3 — Chassis ground:
(B137) No. 6 — Chassis ground:
(B137) No. 7 — Chassis ground:
(B137) No. 26 — Chassis ground:
Is the resistance less than 5
Ω?
Go to step 3.Repair the open
circuit of harness
between ECM
connector and
engine grounding
terminal.
3CHECK INPUT VOLTAGE FROM ECM.
Measure the voltage between ECM connector
and chassis ground.
Connector & terminal
(B135) No. 5 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 4.Repair the open or
ground short cir-
cuit of power sup-
ply circuit.
4CHECK INPUT VOLTAGE FROM ECM.
1) Turn the ignition switch to ON.
2) Measure the voltage between ECM con-
nector and chassis ground.
Connector & terminal
(B135) No. 19 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 5.Repair the open or
ground short cir-
cuit of power sup-
ply circuit.
5CHECK INPUT VOLTAGE OF MAIN RELAY.
Measure the voltage between main relay con-
nector and chassis ground.
Connector & terminal
(B47) No. 2 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 6.Repair the open
circuit of harness
between ECM
connector and
main relay connec-
tor.
6CHECK INPUT VOLTAGE FROM ECM.
1) Connect the connectors to ECM and main
relay.
2) Turn the ignition switch to ON.
3) Measure the voltage between ECM con-
nector and chassis ground.
Connector & terminal
(B136) No. 23 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 7.Repair the open or
ground short cir-
cuit of harness
between ECM
connector and
main relay connec-
tor.
7CHECK INPUT VOLTAGE OF MAIN RELAY.
Measure the voltage between main relay con-
nector and chassis ground.
Connector & terminal
(B47) No. 5 (+) — Chassis ground (–):
(B47) No. 6 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 8.Repair the open or
ground short cir-
cuit of harness of
power supply cir-
cuit.
8CHECK INPUT VOLTAGE FROM ECM.
1) Turn the ignition switch to ON.
2) Measure the voltage between ECM con-
nector and chassis ground.
Connector & terminal
(B134) No. 7 (+) — Chassis ground (–):
(B135) No. 2 (+) — Chassis ground (–):
Is the voltage more than 10 V? Check ignition
control system.
EN(H6DO)(diag)-
63, IGNITION
CONTROL SYS-
TEM, Diagnostics
for Engine Star t-
ing Failure.>
Repair the open or
ground short cir-
cuit of harness
between ECM
connector and
main relay connec-
tor.
Step Check Yes No

Page 1224 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual EN(H6DO)(diag)-63
Diagnostics for Engine Starting Failure
ENGINE (DIAGNOSTICS)
D: IGNITION CONTROL SYSTEM
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode <Ref. to EN(H6

Page 1227 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual EN(H6DO)(diag)-66
Diagnostics for Engine Starting Failure
ENGINE (DIAGNOSTICS)
E: FUEL PUMP CIRCUIT
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode <Ref. to EN(H6DO)(di

Page 1228 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual EN(H6DO)(diag)-67
Diagnostics for Engine Starting Failure
ENGINE (DIAGNOSTICS)
F: FUEL INJECTOR CIRCUIT
CAUTION:
•Check or repair only faulty parts.
•After repair or replacement of faulty parts, p

Page 1229 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual EN(H6DO)(diag)-68
Diagnostics for Engine Starting Failure
ENGINE (DIAGNOSTICS)
2CHECK POWER SUPPLY TO EACH FUEL
INJECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from fuel inj

EN(H6DO)(diag)-68
Diagnostics for Engine Starting Failure
ENGINE (DIAGNOSTICS)
2CHECK POWER SUPPLY TO EACH FUEL
INJECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from fuel injector.
3) Turn the ignition switch to ON.
4) Measure the power supply voltage between
fuel injector terminal and engine ground.
Connector & terminal
#1 (E5) No. 2 (+) — Engine ground (–):
#2 (E16) No. 2 (+) — Engine ground (–):
#3 (E6) No. 2 (+) — Engine ground (–):
#4 (E17) No. 2 (+) — Engine ground (–):
#5 (E43) No. 2 (+) — Engine ground (–):
#6 (E44) No. 2 (+) — Engine ground (–):
Is the voltage more than 10 V? Go to step 3.Repair the har-
ness and connec-
tor.
NOTE:In this case, repair
the following item:
•Open circuit
of harness be-
tween main re-
lay and fuel
injector connec-
tor
•Poor contact
of main relay
connector
•Poor contact
of coupling con-
nector
•Poor contact
of fuel injector
connector
3CHECK HARNESS BETWEEN ECM AND
FUEL INJECTOR CONNECTOR.
1) Disconnect the connectors from ECM.
2) Measure the resistance of harness
between ECM and fuel injector connector.
Connector & terminal
#1 (B137) No. 8 — (E5) No. 1:
#2 (B137) No. 9 — (E16) No. 1:
#3 (B137) No. 10 — (E6) No. 1:
#4 (B137) No. 11 — (E17) No. 1:
#5 (B137) No. 12 — (E43) No. 1:
#6 (B137) No. 13 — (E44) No. 1:
Is the resistance less than 1
Ω?
Go to step 4.Repair the har-
ness and connec-
tor.
NOTE:In this case, repair
the following item:
•Open circuit
of harness be-
tween ECM and
fuel injector
connector
•Poor contact
of coupling con-
nector
4CHECK HARNESS BETWEEN ECM AND
FUEL INJECTOR CONNECTOR.
Measure the resistance of harness between
ECM and fuel injector connector.
Connector & terminal
#1 (B137) No. 8 — Chassis ground:
#2 (B137) No. 9 — Chassis ground:
#3 (B137) No. 10 — Chassis ground:
#4 (B137) No. 11 — Chassis ground:
#5 (B137) No. 12 — Chassis ground:
#6 (B137) No. 13 — Chassis ground:
Is the resistance more than 1
MΩ?
Go to step 5.Repair the ground
short circuit of har-
ness between
ECM and fuel
injector connector.
5CHECK EACH FUEL INJECTOR.
1) Turn the ignition switch to OFF.
2) Measure the resistance between each fuel
injector terminals.
Te r m i n a l s
No. 1 — No. 2:
Is the resistance between 5 —
20 Ω?
Go to step 6.Replace the faulty
fuel injector.
6CHECK POOR CONTACT.
Check poor contact of ECM connector.
Is there poor contact in ECM
connector?
Repair poor con-
tact in ECM con-
nector.
Inspection using
“General Diagnos-
tic Table” EN(H6DO)(diag)-
392, INSPEC-
TION, General
Diagnostic Table.>
Step Check Yes No

Page 1247 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual EN(H6DO)(diag)-86
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
WIRING DIAGRAM:
EN-03737
SBF-5
B47
12
35
46
A3D1D7D2A5D3
2
3736353452B21
E2
ECM
B11B1B10B6B7C2C3B8B9
413

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