2004 SUBARU FORESTER Service Repair Manual

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Page 633 of 2870

SUBARU FORESTER 2004 Service Repair Manual CC(H4DOTC 2.5)-21
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step Check Yes No
1 CHECK CLUTCH SWITCH CIRCUIT.
1) Turn the ignition switch to OFF.
2) Dis

Page 634 of 2870

SUBARU FORESTER 2004 Service Repair Manual CC(H4DOTC 2.5)-22
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
D: DTC 14 NEUTRAL POSITION SWITCH
TROUBLE SYMPTOM:
Cruise control cannot be set.
WIRING DIA

Page 635 of 2870

SUBARU FORESTER 2004 Service Repair Manual CC(H4DOTC 2.5)-23
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step Check Yes No
1 CHECK TRANSMISSION TYPE.Is the target MT model? Go to step 2.Go to ste

CC(H4DOTC 2.5)-23
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step Check Yes No
1 CHECK TRANSMISSION TYPE.Is the target MT model? Go to step 2.Go to step 5.
2 CHECK NEUTRAL POSITION SWITCH CIR-
CUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the neutral position switch har-
ness connector.
3) Turn the ignition switch to ON.
4) Measure the voltage between harness con-
nector terminal and chassis ground.
Connector & terminal
(B128) No. 1 (+) — Chassis ground (
−): Is the voltage more than 10 V? Go to step 3.Check the harness
for open or short
between neutral
position switch and
ECM.
3 CHECK NEUTRAL POSITION SWITCH CIR-
CUIT.
1) Turn the ignition switch to OFF.
2) Measure the resistance between neutral
position switch harness connector terminal and
chassis ground.
Connector & terminal
(B128) No. 3 — Chassis ground: Is the resistance less than 10
Ω? Go to step 4.Repair the har-
ness.
4 CHECK NEUTRAL POSITION SWITCH.
Remove and check the neutral position switch. Is the neutral position switch
OK? Neutral position
switch circuit is
OK.Replace the neu-
tral position switch.
5 CHECK INHIBITOR SWITCH CIRCUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the inhibitor switch harness
connector.
3) Turn the ignition switch to ON.
4) Measure the voltage between harness con-
nector terminal and chassis ground.
Connector & terminal
(T7) No. 12 (+) — Chassis ground (
−): Is the voltage more than 10 V? Go to step 6.Check the harness
for open or short
between inhibitor
switch and ECM.
6 CHECK INHIBITOR SWITCH CIRCUIT.
1) Turn the ignition switch to OFF.
2) Measure the resistance between inhibitor
switch harness connector terminal and chassis
ground.
Connector & terminal
(T7) No. 7 — Chassis ground: Is the resistance less than 10
Ω? Go to step 7.Repair the har-
ness.
7 CHECK INHIBITOR SWITCH.
Remove and check the inhibitor switch. Is the inhibitor switch OK? Inhibitor switch cir-
cuit is OK.Replace the inhibi-
tor switch.

Page 636 of 2870

SUBARU FORESTER 2004 Service Repair Manual CC(H4DOTC 2.5)-24
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
E: DTC 16 IGNITION SWITCH
TROUBLE SYMPTOM:
Cruise control cannot be set.
WIRING DIAGRAM:
CC

Page 637 of 2870

SUBARU FORESTER 2004 Service Repair Manual CC(H4DOTC 2.5)-25
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step Check Yes No
1 CHECK IGNITION SWITCH CIRCUIT.
1) Turn the ignition switch to OFF.
2) D

Page 638 of 2870

SUBARU FORESTER 2004 Service Repair Manual CC(H4DOTC 2.5)-26
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
F: DTC 22 AND 32 VEHICLE SPEED SENSOR
DIAGNOSIS:
Disconnection or short circuit of vehicle

Page 639 of 2870

SUBARU FORESTER 2004 Service Repair Manual CC(H4DOTC 2.5)-27
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step Check Yes No
1 CHECK TRANSMISSION TYPE.Is the target MT model? Go to step 2.Go to ste

CC(H4DOTC 2.5)-27
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step Check Yes No
1 CHECK TRANSMISSION TYPE.Is the target MT model? Go to step 2.Go to step 6.
2 CHECK HARNESS BETWEEN BATTERY
AND VEHICLE SPEED SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the harness connector from
vehicle speed sensor.
3) Turn the ignition switch to ON.
4) Measure the voltage between vehicle
speed sensor harness connector terminal and
chassis ground.
Connector & terminal
(B17) No. 3 (+) — Chassis ground (
−):Is the voltage more than 10 V? Go to step 3.Check the harness
for open or short
between fuse and
vehicle speed sen-
sor.
3 CHECK HARNESS BETWEEN ECM AND VE-
HICLE SPEED SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the harness connector from
ECM.
3) Measure the resistance between vehicle
speed sensor harness connector terminal and
ECM harness connector terminal.
Connector & terminal
(B17) No. 1 — (B135) No. 26:Is the resistance less than 10
Ω?Go to step 4.Repair the har-
ness.
4 CHECK HARNESS BETWEEN VEHICLE
SPEED SENSOR AND ENGINE GROUND.
1) Turn the ignition switch to OFF.
2) Measure the resistance between vehicle
speed sensor harness connector terminal and
engine ground.
Connector & terminal
(B17) No. 2 — Engine ground:Is the resistance less than 10
Ω?Go to step 5.Repair the har-
ness.
5 CHECK VEHICLE SPEED SENSOR.
1) Connect the harness connector to vehicle
speed sensor.
2) Lift-up the vehicle and support with rigid
racks.
3) Drive the vehicle at speed greater than 20
km/h (12 MPH).
Warning:
Be careful not to be caught up by the run-
ning wheels.
4) Measure the voltage between ECM har-
ness connector terminal and chassis ground.
Connector & terminal
(B135) No. 26 (+) — Chassis ground (
−):Is the voltage 1 V ← → 5 V? Check the poor
contact of ECM
connector.Replace the vehi-
cle speed sensor.
6 CHECK HARNESS BETWEEN ECM AND
TCM.
1) Turn the ignition switch to OFF.
2) Disconnect the harness connector from
ECM and TCM.
3) Measure the resistance between ECM har-
ness connector terminal and TCM harness
connector terminal.
Connector & terminal
(B135) No. 26 — (B56) No. 1:Is the resistance less than 10
Ω?Go to step 7.Repair the har-
ness.

Page 640 of 2870

SUBARU FORESTER 2004 Service Repair Manual CC(H4DOTC 2.5)-28
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
7 CHECK TCM
1) Connect the harness connector to TCM.
2) Lift-up the vehicle and support wit

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