2004 SUBARU FORESTER cruise

CC(H4SO)-37
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step Check Yes No
1 CHECK POWER SUPPLY.
1) Turn the ignition switch to OFF.
2) Disconnect the harness connector from
cruise control actuator.
3) Turn the ignition switch to ON.
4) Turn the cruise control main switch to ON.
5) Measure the voltage between cruise control
actuator harness connector terminal and chas-
sis ground.
Te r m i n a l s
(B7) No. 4 (+) — Chassis ground (
−):Is the voltage more than 10 V? Go to step 2.Check the harness
for open or short
between cruise
control module
and cruise control
actuator.
2 CHECK GROUND CIRCUIT OF ACTUATOR.
1) Turn the ignition switch and cruise control
main switch to OFF.
2) Measure the resistance between cruise
control actuator harness connector terminal
and chassis ground.
Te r m i n a l s
(B7) No. 6 — Chassis ground:Is the resistance less than 10
Ω?Go to step 3.Repair the har-
ness.
3 MEASURE RESISTANCE OF ACTUATOR
CLUTCH.
Measure the resistance of cruise control actua-
tor clutch.
Te r m i n a l s
No. 3 — No. 6:Is the resistance approx. 39 Ω? Go to step 4.Replace the cruise
control actuator.
Actuator.>
4 CHECK HARNESS BETWEEN ACTUATOR
AND CRUISE CONTROL MODULE.
1) Disconnect the harness connector from
cruise control module.
2) Measure the resistance between cruise
control module harness connector terminal
and cruise control actuator harness connector
terminal.
Connector & terminal
(B7) No. 2 — (B94) No. 13:Is the resistance less than 10
Ω?Go to step 5.Repair the har-
ness.
5 CHECK HARNESS BETWEEN ACTUATOR
AND CRUISE CONTROL MODULE.
Measure the resistance between cruise control
module harness connector terminal and cruise
control actuator harness connector terminal.
Connector & terminal
(B7) No. 3 — (B94) No. 14:Is the resistance less than 10
Ω?Replace the cruise
control module.
Cruise Control
Module.>Repair the har-
ness.

CC(H4SO)-38
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
F: DTC 38 MOTOR DRIVE SHAFT DOES NOT ENGAGE PROPERLY.
G: DTC 39 MOTOR IS OVERLOADED.
Step Check Yes No
1 CHECK ACTUATOR MOTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the harness connector from
cruise control actuator.
3) Remove the cruise control actuator from
mounting bracket.
4) Pull the cable by hand to check for loose-
ness or status of inner gear engagement.Are foreign particles caught in
the inner gear or does inner
gear engage and disengage
improperly?Replace the cruise
control actuator.
Actuator.>Check the cruise
control cable
adjustment. to CC(H4SO)-5,
CABLE FREE
PLAY, INSPEC-
TION, General
Description.>
Step Check Yes No
1 CHECK THE OPERATING CURRENT TO AC-
TUATOR MOTOR.
1) Connect the Subaru Select Monitor to data
link connector.
2) Try to drive the vehicle while operating the
cruise control system.
3) Measure the operation current to the cruise
control actuator motor.
Connector & terminal
(B7) No. 4 — Chassis ground:Is the voltage more than 10 A? Replace the cruise
control module.
Cruise Control
Module.>Check the power
supply circuit.
CC(H4SO)-13,
CHECK POWER
SUPPLY, Diagnos-
tic Procedure with
Symptom.>

2004 FORESTER SERVICE MANUAL QUICK REFERENCE INDEX
BODY SECTION
G8080GE7
CRUISE CONTROL SYSTEM CC
CRUISE CONTROL SYSTEM
(DIAGNOSTIC)CC(H4SO)
CRUISE CONTROL SYSTEM
(DIAGNOSTIC)CC(H4DOTC)
CRUISE CONTROL SYSTEM
(DIAGNOSTIC)CC(H4DOTC 2.5)
IMMOBILIZER (DIAGNOSTIC) IM

CRUISE CONTROL SYSTEM
(DIAGNOSTIC)
CC(H4DOTC)
Page
1. General Description ....................................................................................2

CC(H4DOTC)-2
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
General Description
1. General Description
A: SPECIFICATION
Specifications for 2.0 L turbo model are included in
CC(H4SO) section. agnostic Procedure.>

2004 FORESTER SERVICE MANUAL QUICK REFERENCE INDEX
BODY SECTION
G8080GE7
CRUISE CONTROL SYSTEM CC
CRUISE CONTROL SYSTEM
(DIAGNOSTIC)CC(H4SO)
CRUISE CONTROL SYSTEM
(DIAGNOSTIC)CC(H4DOTC)
CRUISE CONTROL SYSTEM
(DIAGNOSTIC)CC(H4DOTC 2.5)
IMMOBILIZER (DIAGNOSTIC) IM

CRUISE CONTROL SYSTEM
(DIAGNOSTIC)
CC(H4DOTC 2.5)
Page
1. Basic Diagnostic Procedure ........................................................................2
2. General Description ....................................................................................4
3. Electrical Components Location..................................................................5
4. Engine Control Module (ECM) I/O Signal ...................................................6
5. Subaru Select Monitor.................................................................................8
6. Diagnostic Procedure with Symptom ........................................................10
7. List of Diagnostic Trouble Code (DTC) .....................................................13
8. Diagnostic Procedure with Diagnostic Trouble Code (DTC) .....................16

CC(H4DOTC 2.5)-2
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
Basic Diagnostic Procedure
1. Basic Diagnostic Procedure
A: PROCEDURE
Step Check Yes No
1 CHECK MALFUNCTION INDICATOR LIGHT.
Check the malfunction indicator light illumi-
nates.Does the malfunction indicator
light illuminate?Go to step 5.Go to step 2.
2 CHECK CRUISE INDICATOR LIGHT.
Check the cruise indicator light blinks.Does the cruise indicator light
blink?Go to step 5.Go to step 3.
3 CHECK CRUISE CONTROL MAIN SWITCH
OPERATION.
Check the cruise control main switch opera-
tion. (Check the cruise indicator light illumi-
nates.)Is the cruise control main
switch set to on? (Does the
cruise indicator light illumi-
nate?)Go to step 4.Go to symptom 1.
CC(H4DOTC 2.5)-
10, SYMPTOM
CHART, Diagnos-
tic Procedure with
Symptom.>
4 CHECK CRUISE CONTROL SET OPERA-
TION.
Check the cruise control set operation.Can the cruise control be set
while driving at 40 km/h (25
MPH)?Go to step 6.Go to step 5.
5 PERFORM CRUISE CONTROL CANCEL
CONDITION DIAGNOSIS.
Perform the cruise control cancel condition
diagnosis.Are any DTC indicated? Go to “List of
DTC”. CC(H4DOTC 2.5)-
13, List of Diag-
nostic Trouble
Code (DTC).>Go to symptom 2.
CC(H4DOTC 2.5)-
10, SYMPTOM
CHART, Diagnos-
tic Procedure with
Symptom.>
6 CHECK VEHICLE SPEED IS HELD WITHIN
SET SPEED.
Make sure the vehicle speed is held within set
speed.Is the vehicle speed held within
set speed ±3 km/h (±2 MPH)?
(Make an inspection on a level
road.)Go to step 7.Go to symptom 3.
CC(H4DOTC 2.5)-
10, SYMPTOM
CHART, Diagnos-
tic Procedure with
Symptom.>
7 CHECK RESUME/ACCEL OPERATION.
Check the RESUME/ACCEL switch operation.Does the vehicle speed
increase or return to set speed
after RESUME/ACCEL switch
has been pressed?Go to step 8.Go to symptom 4.
CC(H4DOTC 2.5)-
10, SYMPTOM
CHART, Diagnos-
tic Procedure with
Symptom.>
8 CHECK SET/COAST OPERATION.
Check the SET/COAST switch operation.Does the vehicle speed
decrease after SET/COAST
switch has been pressed?Go to step 9.Go to symptom 5.
CC(H4DOTC 2.5)-
10, SYMPTOM
CHART, Diagnos-
tic Procedure with
Symptom.>
9 CHECK CANCEL OPERATION.
Check the CANCEL switch operation.Is the cruise control released
after CANCEL switch has been
pressed?Go to step 10.Go to symptom 6.
CC(H4DOTC 2.5)-
10, SYMPTOM
CHART, Diagnos-
tic Procedure with
Symptom.>