SUBARU FORESTER 2004 Service Repair Manual

CC(H4SO)-23
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Symptom
G: CHECK CLUTCH SWITCH (MT MODEL)
TROUBLE SYMPTOM:
Cruise control cannot be set.
WIRING DIAGRAM:
CC-00033
B107B94B65
AT :AT MODEL
MT :MT MODEL
1212345678910
11 12 13 14 15 16 17 18 19 20
BATTERY
CRUISE
CONTROL
MODULE
SBF-1SBF-2F/B No.16
CLUTCH
SWITCH (MT MODEL)
1
2
B65
B94
B107STOP LIGHT SWITCH
AND BRAKE SWITCH
BRAKE
SWITCH STOP LIGHT
SWITCH
4
3
1
2
2011
16
AT
MT
MT
AT
1234

CC(H4SO)-24
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Symptom
Step Check Yes No
1 CHECK CLUTCH SWITCH CIRCUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the clutch switch harness con-
nector.
3) Turn the ignition switch to ON.
4) Turn the cruise control main switch to ON.
5) Measure the voltage between harness con-
nector terminal and chassis ground.
Connector & terminal
(B107) No. 2 (+) — Chassis ground (
−):Is the voltage more than 10 V? Go to step 2.Check the harness
for open or short
between clutch
switch and cruise
control module.
2 CHECK CLUTCH SWITCH CIRCUIT.
1) Turn the cruise control main switch and
ignition switch OFF.
2) Disconnect the stop light switch and brake
switch harness connector.
3) Measure the resistance between clutch
switch harness connector terminal and stop
light switch and brake switch harness connec-
tor terminal.
Connector & terminal
(B107) No. 1 — (B65) No. 4:Is the resistance less than 10
Ω?Go to step 3.Repair the har-
ness.
3 CHECK CLUTCH SWITCH.
Remove and check the clutch switch. CC-11, Clutch Switch.>Is the clutch switch OK? Clutch switch cir-
cuit is OK.Replace the clutch
switch.

CC(H4SO)-25
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Symptom
H: CHECK INHIBITOR SWITCH (AT MODEL)
TROUBLE SYMPTOM:
Cruise control cannot be set.
WIRING DIAGRAM:
CC-00254
B94T7B12B323
12345678910
11 12 13 14 15 16 17 18 19 20123
4
56
78
9
1011 12
B94
B323
B12
T3
T7
B14
CRUISE
CONTROL
MODULE
INHIBITOR
SWITCH (AT MODEL)STARTER
MOTOR
4
1211
127
WS
WS
WS
OS
OS
123456789101112
:WITHOUT SECURITY SYSTEM
:WITH SECURITY SYSTEM
TO SECURITY
SYSTEM
3412
OS
BATTERY
SBF-1M/B No.2
SECURITY RELAY
2134

CC(H4SO)-26
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Symptom
Step Check Yes No
1 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) Turn the cruise control main switch to ON.
5) 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 2.Check the harness
for open or short
between inhibitor
switch and cruise
control module.
2 CHECK INHIBITOR SWITCH CIRCUIT.
1) Turn the cruise control main switch and
ignition switch to OFF.
2) Disconnect the starter motor harness con-
nector.
3) Measure the resistance between inhibitor
switch harness connector terminal and starter
motor harness connector terminal.
Connector & terminal
(T7) No. 7 — (B14) No. 1: Is the resistance less than 10
Ω?Go to step 3.Repair the har-
ness.
3 CHECK INHIBITOR SWITCH.
Remove and check the inhibitor switch. to CC-12, Inhibitor Switch (AT model).>Is the inhibitor switch OK? Inhibitor switch cir-
cuit is OK.Replace the inhibi-
tor switch.

CC(H4SO)-27
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
List of Diagnostic Trouble Code (DTC)
7. List of Diagnostic Trouble Code (DTC)
A: LIST
DTC Item Contents of diagnosis Reference
21 Inner relay is seized. Cruise control module inner relay is seized when main
switch is OFF. DTC 21, 24, 25 AND 2A
CRUISE CONTROL
MODULE BUILT-IN
RELAY, CPU RAM, Diag-
nostic Procedure with
Diagnostic Trouble Code
(DTC).>
22 Vehicle speed sensor Vehicle speed signal changes more than 10 km/h (6
MPH) within 350 ms. DTC 22 VEHICLE SPEED
SENSOR, Diagnostic Pro-
cedure with Diagnostic
Trouble Code (DTC).>
24 Cruise control module is
abnormal.Two vehicle speed values stored in cruise control module
memory are not the same. DTC 21, 24, 25 AND 2A
CRUISE CONTROL
MODULE BUILT-IN
RELAY, CPU RAM, Diag-
nostic Procedure with
Diagnostic Trouble Code
(DTC).>
25 Cruise control module is
abnormal.Two output values stored in cruise control module mem-
ory are not the same. DTC 21, 24, 25 AND 2A
CRUISE CONTROL
MODULE BUILT-IN
RELAY, CPU RAM, Diag-
nostic Procedure with
Diagnostic Trouble Code
(DTC).>
28 Wiring harness opened. Open wiring harness circuit is detected via control mod-
ule relay when main switch is ON. DTC 28 WIRING HAR-
NESS OPENED., Diag-
nostic Procedure with
Diagnostic Trouble Code
(DTC).>
35 Motor drive system is
abnormal. Motor output circuit is open or shorted.
 Motor drive circuit is open or shorted. DTC 35 AND 36 ACTUA-
TOR MOTOR, Diagnostic
Procedure with Diagnos-
tic Trouble Code (DTC).>
36 Trouble of motor turning
speedMotor turning speed is low. DTC 35 AND 36 ACTUA-
TOR MOTOR, Diagnostic
Procedure with Diagnos-
tic Trouble Code (DTC).>
37 Motor clutch drive system
is abnormal. Motor clutch output circuit is open or shorted.
 Motor clutch drive circuit is open or shorted. DTC 37 ACTUATOR
MOTOR CLUTCH, Diag-
nostic Procedure with
Diagnostic Trouble Code
(DTC).>

CC(H4SO)-28
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
List of Diagnostic Trouble Code (DTC)
38 Motor drive shaft does not
engage properly.Motor drive gear engagement is not properly adjusted. DTC 38 MOTOR DRIVE
SHAFT DOES NOT
ENGAGE PROPERLY.,
Diagnostic Procedure with
Diagnostic Trouble Code
(DTC).>
39 Motor is overloaded. Current flows through motor more frequently than under
normal conditions. DTC 39 MOTOR IS
OVERLOADED., Diag-
nostic Procedure with
Diagnostic Trouble Code
(DTC).>
2A Cruise control module is
abnormal.Cruise control module self-diagnosis function senses
abnormality. DTC 21, 24, 25 AND 2A
CRUISE CONTROL
MODULE BUILT-IN
RELAY, CPU RAM, Diag-
nostic Procedure with
Diagnostic Trouble Code
(DTC).> DTC Item Contents of diagnosis Reference

CC(H4SO)-29
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
8. Diagnostic Procedure with
Diagnostic Trouble Code
(DTC)
A: DTC 21, 24, 25 AND 2A CRUISE
CONTROL MODULE BUILT-IN RE-
LAY, CPU RAM
DIAGNOSIS:
 Poor welding of built-in relay of cruise control mod-
ule.
 Failure of built-in CPU RAM of cruise control mod-
ule.
TROUBLE SYMPTOM:
 Cruise control is canceled and memorized cruise
speed is also canceled.
 Once cruise control is canceled, cruise control
cannot be set until the ignition switch and cruise
control main switch turns OFF, and then turns ON
again.
NOTE:
Check input/output signal and vehicle speed signal
with select monitor. When signals are in good con-
dition, failure is in cruise control module. (Check
the power supply and ground conditions of cruise
control module.)

CC(H4SO)-30
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
B: DTC 22 VEHICLE SPEED SENSOR
DIAGNOSIS:
Disconnection or short circuit of vehicle speed sensor system.
TROUBLE SYMPTOM:
Cruise control cannot be set. (Cancelled immediately.)
WIRING DIAGRAM:
CC-00042
BATTERY
CRUISE
CONTROL
MODULE
M/B No.5IGNITION
RELAY
B17 TCM
E
C17
B17
B21
B94E2
B56
B56 C:
GEVEHICLE SPEED
SENSOR
(MT MODEL) 1
2
3
619
B94
E
16
MT
AT : AT MODEL C:
MT : MT MODELAT
12312345678910
11 12 13 14 15 16 17 18 19 20
123
4
56
78
9
1011 12
1314 15 16
12
789 56 3410 11 12
19 20 2113 14 15 16 17 18
22
23
24
F60
E216
B100
F29
LT
LT
XLXL
LT : LHD TURBO
MODEL
XL : EXCEPT LHD
TURBO MODEL
: TURBO MODEL
: NON-TURBO
MODELXL
LT
TB
NA
B17
3412
F2
1234 5678910 11 12 13 14 15 16 17 18 19 20
NA
TB :
:
F60LT :
B21XL :

CC(H4SO)-31
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 relay
and vehicle speed
sensor.
3 CHECK HARNESS BETWEEN CRUISE CON-
TROL MODULE AND VEHICLE SPEED SEN-
SOR.
1) Turn the ignition switch to OFF.
2) Disconnect the harness connector from
cruise control module.
3) Measure the resistance between vehicle
speed sensor harness connector terminal and
cruise control module harness connector ter-
minal.
Connector & terminal
(B17) No. 1 — (B94) No. 19: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 cruise control
module harness connector terminal and chas-
sis ground.
Connector & terminal
(B94) No. 19 (+) — Chassis ground (
−):Is the voltage less than 0 V ←
→ more than 5 V?Replace the cruise
control module.
Cruise Control
Module.>Replace the vehi-
cle speed sensor.
6 CHECK HARNESS BETWEEN CRUISE CON-
TROL MODULE AND TCM.
1) Turn the ignition switch to OFF.
2) Disconnect the harness connector from
TCM and cruise control module.
3) Measure the resistance between cruise
control module harness connector terminal
and TCM harness connector terminal.
Connector & terminal
(B94) No. 19 — (B56) No. 17:Is the resistance less than 10
Ω?Go to step 7.Repair the har-
ness.

CC(H4SO)-32
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 with rigid
racks.
3) Drive the vehicle faster than 10 km/h (6
MPH).
Warning:
Be careful not to be caught by the running
wheels.
4) Measure the voltage between TCM har-
ness connector terminal and chassis ground.
Connector & terminal
(B56) No. 17 (+) — Chassis ground (
−):Is the voltage less than 0 V ←
→ more than 5 V?Replace the cruise
control module.
Cruise Control
Module.>Replace the TCM.
Transmission Con-
trol Module
(TCM).> Step Check Yes No