1999 SUBARU FORESTER check engine

2. ON-BOARD DIAGNOSIS WITH SELECT
MONITOR
IGeneral
The on-board diagnosis function of the cruise con-
trol system uses an external select monitor.
The on-board diagnosis function operates in two
categories, which are used depending on the type
of problems;
NOTE:
Select monitor part No.:

1) Cruise cancel conditions diagnosis
(1) This category of diagnosis requires actual
vehicle driving in order to determine the cause,
(as when cruise speed is cancelled during driv-
ing although cruise cancel condition is not
entered).
(2) Cruise control module memory stores the
cancel condition (Code No.) which occurred
during driving. When there are plural cancel
conditions (Code No.), they are shown on the
select monitor.
CAUTION:
IThe cruise control memory stores not only
the cruise ªcancelº which occurred (although
ªcancelº operation is not entered by the
driver), but also the ªcancelº condition input by
the driver.
IThe content of memory is cleared when igni-
tion switch or cruise main switch is turned OFF.
2) Real-time diagnosis
The real-time diagnosis function is used to deter-
mine whether or not the input signal system is in
good order, according to signal emitted from
switches, sensors, etc.
(1) Vehicle cannot be driven at cruise speed
because problems occurs in the cruise control
system or its associated circuits.
(2) Monitor the signal conditions from switches
and sensors.
ICruise Cancel Conditions Diagnosis
1) Connect select monitor.
2) Start the engine and turn cruise control main
switch to ON.
3) Set select monitor in ªAll System Diagnosisº
mode.
NOTE:
The diagnostic code is also shown in the ªEach
System Checkº mode. This mode is called up on
the ªCruise Control Diagnosisº screen by selecting
the item ªCancel Code(s) Displayº.
4) Drive vehicle at least 40 km/h (25 MPH) with
cruise speed set.5) If cruise speed is canceled itself (without doing
any cancel operations), a diagnostic code will
appear on select monitor display.
CAUTION:
IA diagnostic code will also appear when
cruise cancel is effected by driver. Do not con-
fuse.
IHave a co-worker ride in vehicle to assist in
diagnosis during driving.
NOTE:
Diagnostic code will be cleared by turning ignition
switch or cruise control main switch to OFF.
IReal-Time Diagnosis
1) Connect select monitor.
2) Turn ignition switch and cruise control main
switch to ON.
3) Select the ªCurrent Data Display & Saveº mode
on the select monitor ªCruise Control Diagnosisº
screen.
4) Ensure that normal indication is displayed when
controls are operated as indicated below:
IDepress/release the brake pedal. (Stop light
switch and brake switch turn ON.)
ITurn ON the ªSET/COASTº switch.
ITurn ON the ªRESUME/ACCELº switch.
IDepress/release the clutch pedal. (MT)
ISet the select lever to P or N. (AT)
23
[T3F2]6-2DIAGNOSTICS
3. Cruise Control System

3H41 : CHECK TRANSMISSION TYPE.
:Is the transmission type MT?
: Go to step3H42.
: Go to step3H46.
3H42 : CHECK HARNESS CONNECTOR
BETWEEN CRUISE CONTROL MOD-
ULE AND VEHICLE SPEED SEN-
SOR.
1) Disconnect connector from vehicle speed sen-
sor and cruise control module.
2) Measure resistance of harness connector
between vehicle speed sensor and cruise control
module.
Connector & terminal
(B17) No. 1 Ð (B94) No. 18:
S6M0327A
:Is the resistance less than 10W?
: Go to step3H43.
: Repair wiring harness.3H43 : CHECK HARNESS CONNECTOR
BETWEEN BATTERY AND VEHICLE
SPEED SENSOR.
1) Turn ignition switch to ON.
2) Measure voltage between vehicle speed sensor
connector (B17) and chassis ground.
Connector & terminal
(B17) No. 3 (+) Ð Chassis ground (þ):
B6M0945A
:Is the voltage more than 10 V?
: Go to step3H44.
: Repair harness connector between bat-
tery and vehicle speed sensor.
3H44 : CHECK HARNESS CONNECTOR
BETWEEN VEHICLE SPEED SEN-
SOR AND ENGINE GROUND.
1) Turn ignition switch to OFF.
2) Measure resistance between vehicle speed
sensor connector (B17) and engine ground.
Connector & terminal
(B17) No. 2 (+) Ð Engine ground (þ):
B6M0946A
:Is the resistance less than 10W?
: Go to step3H45.
: Repair harness connector between
vehicle speed sensor and engine
ground.
39
[T3H4]6-2DIAGNOSTICS
3. Cruise Control System

4F113 : CHECK DOOR SWITCH FUNCTION.
1) Close the rear left door.
2) Open the rear right door.
:Does the room light turn on?
: Go to step4F114.
: Go to step4F41.
4F114 : PERFORM PROGRAMMING.
NOTE:
Finish operation from step 1) through 4) within 45
seconds.
1) Sit on the driver's seat and close all doors and
the rear gate.
2) Open the driver's door.
3) Close the driver's door.
4) Turn the ignition switch from ON to LOCK ten
times in rapid succession (within 15 seconds).
NOTE:
Do not start the engine at this time.
5) The horn chirps one time to indicate that the
system has been in the programming mode.
6) Open the driver's door.
7) Close the driver's door.
8) Press any button on the transmitter that you
wish to program into the system.
9) Horn will chirp two times to indicate that the
transmitter has been programmed.
NOTE:
Any additional transmitter can also be pro-
grammed at this time. Repeat steps 6) through 9)
for an additional transmitter.
10) Remove the ignition key from the ignition
switch.
11) The horn will chirp three times to indicate that
the system has exited the programming mode.
12) Check the keyless entry system properly oper-
ates by operating each transmitter.
:Does the transmitter operate nor-
mally?
: Go to step4F115.
: Go to step4F51.4F115 : CHECK IGNITION KEY SWITCH.
1) Insert the ignition key to the ignition switch (at
LOCK position).
2) Perform lock and unlock with transmitter.
:Does the power door lock function
normally?
: Go to step4F61.
: End of basic diagnostics procedure.
62
6-2[T4F1]DIAGNOSTICS
4. Keyless Entry System

5. DIAGNOSTICS ITEM 4
5F51 : CHECK INPUT SIGNAL FOR
STARTER MOTOR.
1) Disconnect connector from starter motor.
2) Turn ignition switch to START.
3) Measure voltage between starter motor con-
nector (B14) and engine ground.
Connector & terminal
(B14) No. 1 (+) Ð Engine ground (þ):
OBD0100A
NOTE:
IOn AT vehicles, place the select lever in the P
or N position.
IOn MT vehicles, depress the clutch pedal.
:Is the voltage more than 10 V?
: Go to step5F52.
: Go to step5F53.
5F52 : CHECK GROUND CIRCUIT OF
STARTER MOTOR.
1) Turn ignition switch to OFF.
2) Disconnect terminal from starter motor.
3) Measure resistance between ground cable ter-
minal and engine ground.
:Is the resistance less than 5W?
: Check starter motor. [W100].>
: Repair or replace ground cable.
5F53 : CHECK FUSE.
Remove and visually check the fuse SBF-1 (in
main fuse box).
:Is fuse SBF-1 blown?
: Replace SBF fuse (80 A).
: Go to step5F54.5F54 : CHECK FUSE.
Remove and visually check the fuse SBF-4 (in
main fuse box).
:Is fuse SBF-4 blown?
: Replace SBF fuse (50 A).
: Go to step5F55.
5F55 : CHECK INTERRUPT RELAY.
1) Turn ignition switch to OFF.
2) Remove interrupt relay (behind the fuse box).
S6M0469
3) Check continuity between interrupt relay termi-
nals.
Terminals
No. 1 Ð No. 4:
B6M0992
:Does continuity exist?
: Go to step5F56.
: Replace interrupt relay.
84
6-2[T5F5]DIAGNOSTICS
5. Security System

3. RELEASE CABLE
1) Remove front grille.
2) Remove release cable from lock assembly.

3) Remove cable clip from engine compartment.
4) While disengaging cable from opener lever,
remove opener lever from front pillar.
S5M0149
5) Remove release cable.
6) Install in the reverse order of removal.
B: POINTS TO CHECK
1) Check striker for bending or abnormal wear.
2) Check safety lever for improper movement.
3) Check other levers and spring for rust formation
and rough movement.
G5M0140
C: ADJUSTMENT
1) Fore-aft and left-right adjustments
Loosen striker mounting bolts and adjust fore-and-
aft position of striker.
CAUTION:
Do not adjust striker position using the lock.
Doing so may result in a misaligned front grille.
G5M0143
2) Up-down adjustment
Make up-and-down adjustment of striker only
when hood does not properly contact buffer or
hood is not flush with fender, or when release cable
does not properly operate. Adjustment can be
made by adjusting the stroke length of the striker
after lock assembly mounting screws are removed.
30
5-1[W1A3]SERVICE PROCEDURE
1. Hood

(3) Set a new bearing and closely install a fit
tool on the bearing outer race. Press the bear-
ing down into place with a hand press or vise.
A socket wrench can serve as the tool.
(4) Install front bearing retainer.
S6M0410A
(A) Bearing
(B) Socket wrench
(C) Front bracket
D: ASSEMBLY
Assemble in the reverse order of disassembly.
1) Pulling up brush
Before assembling, press the brush down into the
brush holder with your finger and secure in that
position by passing a [2 mm (0.08 in) dia. length 4
to 5 cm (1.6 to 2.0 in)] wire (A) through the hole
shown in the figure.
CAUTION:
Be sure to remove the wire after reassembly.
S6M0411A
2) Heat the bearing box in the rear bracket [50 to
60ÉC (122 to 140ÉF)] and press the rear bearing
into the rear bracket.
CAUTION:
Grease should not be applied for the rear bear-
ing. Remove oil completely if it is found on the
bearing box.
3) After reassembly, turn the pulley by hand to
check that the rotor turns smoothly.
3. Spark Plug
A: REMOVAL AND INSTALLATION
CAUTION:
All spark plugs installed on an engine, must be
of the same heat range.
Spark plug:
CHAMPION: RC10YC4
(Alternate)
CHAMPION: RC8YC4
NGK: BKR6E-11
NIPPONDENSO: K20PR-U11
1. #1 SPARK PLUG
1) Disconnect battery ground cable.
G6M0095
2) Remove air intake duct and resonator chamber.
(1) Remove bolt which installs air intake duct
on the front side of body.
S6M0708
(2) Remove bolt which installs air intake duct
on body.
B2M2284
16
6-1[W2D0]SERVICE PROCEDURE
3. Spark Plug

(3) Set a new bearing and closely install a fit
tool on the bearing outer race. Press the bear-
ing down into place with a hand press or vise.
A socket wrench can serve as the tool.
(4) Install front bearing retainer.
S6M0410A
(A) Bearing
(B) Socket wrench
(C) Front bracket
D: ASSEMBLY
Assemble in the reverse order of disassembly.
1) Pulling up brush
Before assembling, press the brush down into the
brush holder with your finger and secure in that
position by passing a [2 mm (0.08 in) dia. length 4
to 5 cm (1.6 to 2.0 in)] wire (A) through the hole
shown in the figure.
CAUTION:
Be sure to remove the wire after reassembly.
S6M0411A
2) Heat the bearing box in the rear bracket [50 to
60ÉC (122 to 140ÉF)] and press the rear bearing
into the rear bracket.
CAUTION:
Grease should not be applied for the rear bear-
ing. Remove oil completely if it is found on the
bearing box.
3) After reassembly, turn the pulley by hand to
check that the rotor turns smoothly.
3. Spark Plug
A: REMOVAL AND INSTALLATION
CAUTION:
All spark plugs installed on an engine, must be
of the same heat range.
Spark plug:
CHAMPION: RC10YC4
(Alternate)
CHAMPION: RC8YC4
NGK: BKR6E-11
NIPPONDENSO: K20PR-U11
1. #1 SPARK PLUG
1) Disconnect battery ground cable.
G6M0095
2) Remove air intake duct and resonator chamber.
(1) Remove bolt which installs air intake duct
on the front side of body.
S6M0708
(2) Remove bolt which installs air intake duct
on body.
B2M2284
16
6-1[W2D0]SERVICE PROCEDURE
3. Spark Plug

7) Install in the reverse order of removal.
Tightening torque (Spark plug):
20.6
±2.9 N´m (2.10±0.30 kg-m, 15.19±2.14
ft-lb)
CAUTION:
The above torque should be only applied to
new spark plugs without oil on their threads.
In case their threads are lubricated, the torque
should be reduced by approximately 1/3 of the
specified torque in order to avoid over-stress-
ing.
B: INSPECTION
Check electrodes and inner and outer porcelain of
plugs, noting the type of deposits and the degree
of electrode erosion.
S6M0420A
(A) Electrode gap
(B) Carbon accumulation or wear
(C) Cracks
(D) Damage
(E) Damaged gasket
1) Normal
Brown to grayish-tan deposits and slight electrode
wear indicate correct spark plug heat range.
G6M0087
2) Carbon fouled
Dry fluffy carbon deposits on insulator and elec-
trode are mostly caused by slow speed driving in
city, weak ignition, too rich fuel mixture, dirty air
cleaner, etc.
It is advisable to replace with plugs having hotter
heat range.
G6M0088
3) Oil fouled
Wet black deposits show excessive oil entrance
into combustion chamber through worn rings and
pistons or excessive clearance between valve
guides and stems. If same condition remains after
repair, use a hotter plug.
G6M0089
4) Overheating
White or light gray insulator with black or gray
brown spots and bluish burnt electrodes indicate
engine overheating. Moreover, the appearance
results from incorrect ignition timing, loose spark
plugs, wrong selection of fuel, hotter range plug,
etc. It is advisable to replace with plugs having
colder heat range.
G6M0090
20
6-1[W3B0]SERVICE PROCEDURE
3. Spark Plug