2004 SUBARU FORESTER Service Repair Manual

dimensions lug pattern homelink torque alternator belt compression ratio

Page 1337 of 2870

SUBARU FORESTER 2004 Service Repair Manual EN(H4SO)-239
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step Check Yes No
1 CHECK POWER SUPPLY TO IDLE AIR CON-
TROL SOLENOID VALVE.
1) Turn the ignition switch to OFF

EN(H4SO)-239
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step Check Yes No
1 CHECK POWER SUPPLY TO IDLE AIR CON-
TROL SOLENOID VALVE.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from idle air con-
trol solenoid valve.
3) Turn the ignition switch to ON.
4) Measure the voltage between idle air con-
trol solenoid valve connector and engine
ground.
Connector & terminal
(E7) No. 2 (+) — Engine ground (
−):
(E7) No. 5 (+) — Engine ground (
−):Is the voltage more than 10 V? Go to step 2.Repair harness
and connector.
N
OTE:
In this case repair
the following:
Open circuit in
harness between
idle air control
solenoid valve and
main relay connec-
tor
Poor contact in
coupling connector
2 CHECK HARNESS BETWEEN ECM AND
IDLE AIR CONTROL SOLENOID VALVE
CONNECTOR.
1) Turn the ignition switch to OFF.
2) Measure the resistance between ECM and
idle air control solenoid valve connector.
Connector & terminal
DTC P1510; (B134) No. 20 — (E7) No. 4:
DTC P1512; (B134) No. 6 — (E7) No. 1:
DTC P1514; (B134) No. 5 — (E7) No. 6:
DTC P1516; (B134) No. 19 — (E7) No. 3:Is the resistance less than 1
Ω?Go to step 3.Repair harness
and connector.
N
OTE:
In this case repair
the following:
Open circuit in
harness between
ECM and idle air
control solenoid
valve connector
Poor contact in
coupling connector
3 CHECK HARNESS BETWEEN ECM AND
IDLE AIR CONTROL SOLENOID VALVE
CONNECTOR.
1) Disconnect the connector from ECM.
2) Measure the resistance between ECM con-
nector and chassis ground.
Connector & terminal
DTC P1510; (B134) No. 20 — Chassis
ground:
DTC P1512; (B134) No. 6 — Chassis
ground:
DTC P1514; (B134) No. 5 — Chassis
ground:
DTC P1516; (B134) No. 19 — Chassis
ground:Is the resistance more than 1
MΩ?Go to step 4.Repair ground
short circuit in har-
ness between
ECM and idle air
control solenoid
valve connector.
4 CHECK POOR CONTACT.
Check poor contact in ECM connector and idle
air control solenoid valve connector.Is there poor contact in ECM
connector or idle air control
solenoid valve connector?Repair the poor
contact in ECM
connector or idle
air control solenoid
valve connector.Replace the idle
air control solenoid
valve. FU(H4SO)-33, Idle
Air Control Sole-
noid Valve.>

Page 1338 of 2870

SUBARU FORESTER 2004 Service Repair Manual EN(H4SO)-240
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
CK:DTC P1517 ISC SOLENOID VALVE SIGNAL #4 CIRCUIT MALFUNCTION
(HIGH INPUT)
DTC DETECTING CONDITION:
Immediatel

Page 1339 of 2870

SUBARU FORESTER 2004 Service Repair Manual EN(H4SO)-241
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step Check Yes No
1 CHECK ANY OTHER DTC ON DISPLAY.Is any other DTC displayed? Inspect the DTC
using “List o

Page 1340 of 2870

SUBARU FORESTER 2004 Service Repair Manual EN(H4SO)-242
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
CL:DTC P1518 STARTER SWITCH CIRCUIT LOW INPUT
DTC DETECTING CONDITION:
Two consecutive driving cycles with faul

Page 1341 of 2870

SUBARU FORESTER 2004 Service Repair Manual EN(H4SO)-243
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
WIRING DIAGRAM:
EN-00261
12INHIBITOR SWITCH
STARTER
MOTOR
7P
RND321
SBF-4SBF-1
B14
B72
12
11
T7T3B12
13
IGNITIO

Page 1342 of 2870

SUBARU FORESTER 2004 Service Repair Manual EN(H4SO)-244
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step Check Yes No
1 CHECK OPERATION OF STARTER MOTOR.
Place the inhibitor switch in the “P” or “N”
r

Page 1343 of 2870

SUBARU FORESTER 2004 Service Repair Manual EN(H4SO)-245
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
CM:DTC P1560 BACK-UP VOLTAGE CIRCUIT MALFUNCTION
DTC DETECTING CONDITION:
Immediately at fault recognition
CAUT

Page 1344 of 2870

SUBARU FORESTER 2004 Service Repair Manual EN(H4SO)-246
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step Check Yes No
1 CHECK INPUT SIGNAL FROM ECM.
1) Turn the ignition switch to OFF.
2) Measure the voltage bet

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