sensor SUBARU FORESTER 1999 Service Owner's Manual

1A4 : CHECK TRANSMISSION TYPE.
:Is the transmission type MT?
: Go to step1A5.
: Go to step1A9.
1A5 : CHECK HARNESS CONNECTOR
BETWEEN COMBINATION METER
AND VEHICLE SPEED SENSOR.
1) Disconnect connector from vehicle speed sen-
sor.
2) Measure resistance of harness connector
between vehicle speed sensor and combination
meter.
Connector & terminal
(B17) No. 1 Ð (i10) No. 7:
S6M0433A
:Is the resistance less than 10W?
: Go to step1A6.
: Repair wiring harness.1A6 : 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 step1A7.
: Repair harness connector between bat-
tery and vehicle speed sensor.
1A7 : CHECK HARNESS CONNECTOR
BETWEEN VEHICLE SPEED SENSOR
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 step1A8.
: Repair harness connector between
vehicle speed sensor and engine
ground.
3
[T1A7]6-2DIAGNOSTICS
1. Combination Meter

1A8 : CHECK VEHICLE SPEED SENSOR.
1) Connect connector to vehicle speed sensor.
2) Set the vehicle on a free roller, or lift-up the
vehicle and support with safety stands.
WARNING:
Be careful not to get caught in the rotating
wheels.
3) Set oscilloscope to vehicle speed sensor con-
nector terminals.
Positive probe; (B17) No. 1
Earth lead; (B17) No. 2
H6M0789A
4) Drive the vehicle at speed greater than 20 km/h
(12 MPH).
5) Measure signal voltage indicated on oscillo-
scope.
H6M0790A
:Is the voltage more than 5 V?
: Repair or replace speedometer.
: Replace vehicle speed sensor. <Ref. to
6-2 [W1100].>1A9 : CHECK HARNESS CONNECTOR
BETWEEN COMBINATION METER
AND AUTOMATIC TRANSMISSION
CONTROL MODULE.
1) Disconnect connector from automatic transmis-
sion control module.
2) Measure resistance between combination
meter connector (i10) and automatic transmission
control module connector (B56).
CAUTION:
To measure the voltage and/or resistance, use
a tapered pin with a diameter of less than 0.64
mm (0.025 in). Do not insert the pin more than
5 mm (0.20 in).
Connector & terminal
(i10) No. 7 Ð (B56) No. 17:
S6M0434A
:Is the resistance less than 10W?
: Go to step1A10.
: Repair harness connector between
combination meter and automatic trans-
mission control module.
4
6-2[T1A8]DIAGNOSTICS
1. Combination Meter

Content Terminal No. Measuring conditions and I/O signals (ignition switch ON and engine idling)
Vehicle speed sensor (MT)
Automatic transmission control
module (AT)18 Lift-up the vehicle until all four wheels are raised off ground, and then rotate
any wheel manually. Approx. 5 and 0 volt pulse signals are alternately input to
cruise control module.
Stop light switch 19 Turn ignition switch to OFF. Then check that;
IBattery voltage is present when brake pedal is depressed.
Iª0º volt is present when brake pedal is released.
Ground 20 Ð
NOTE:
Voltage at terminals 1, 2, 11 and 12 cannot be checked unless vehicle is driving by cruise control operation.
21
[T3E0]6-2DIAGNOSTICS
3. Cruise Control System

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.:
<Ref. to 1-6 [G1100].>
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

H: DIAGNOSTICS CHART WITH DIAGNOSTIC CODE
1. DIAGNOSTIC CODE LIST
Diagnostic
codeItem Contents of diagnosis Index No.
11 BRAKE SW/STOP SW Input signals from brake switch ªOFFº, stop light
switch ªONº
(Brake pedal is depressed.)<Ref. to 6-2 [T3H2].>
12 CLUTCH SW/INHIBITOR SW Input signals from clutch switch ªOFFº (MT), or inhibi-
tor switch ªP or Nº (AT)
[Clutch pedal is depressed (MT), or select lever is set
to P or N position (AT).]<Ref. to 6-2 [T3H3].>
13 LOW SPEED LIMIT Low-speed control limiter <Ref. to 6-2 [T3H4].>
14 CANCEL SW Input signal from cancel switch
(faulty SET/COAST switch or RESUME/ACCEL
switch)<Ref. to 6-2 [T3H5].>
21 VACUUM VALVE Faulty vacuum valve or valve drive system <Ref. to 6-2 [T3H6].>
22 VENT 2 VALVE Faulty vent 2 valve or valve drive system <Ref. to 6-2 [T3H6].>
23 VENT 1 VALVE Faulty vent 1 valve or valve drive system <Ref. to 6-2 [T3H6].>
24 SPEED SENSOR Faulty vehicle speed sensor (MT) or transmission
control module (AT)<Ref. to 6-2 [T3H4].>
25 CONTROL MODULE Faulty CPU RAM included in cruise control module <Ref. to 6-2 [T3H7].>
29
[T3H1]6-2DIAGNOSTICS
3. Cruise Control System

4. DIAGNOSTIC CODE 13 AND 24 (SPEED SENSOR SYSTEM)
DIAGNOSIS:
IDisconnection or short circuit of vehicle speed sensor (MT model) or transmission control module (AT
model).
TROUBLE SYMPTOM:
ICruise control cannot be set. (Cancelled immediately.)
WIRING DIAGRAM:
S6M0421
38
6-2[T3H4]DIAGNOSTICS
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

3H45 : CHECK VEHICLE SPEED SENSOR.
1) Connect connector to vehicle speed sensor.
2) Set the vehicle on free roller, or lift-up the
vehicle and support with safety stands.
WARNING:
Be careful not to be caught up by the running
wheels.
3) Set oscilloscope to vehicle speed sensor con-
nector terminals.
Positive probe; (B17) No. 1
Earth lead; (B17) No. 2
H6M0789A
4) Drive the vehicle at speed greater than 20 km/h
(12 MPH).
5) Measure signal voltage indicated on oscillo-
scope.
H6M0790A
:Is the voltage more than 5 V?
: Replace cruise control module. <Ref. to
6-2 [W12B4].>
: Replace vehicle speed sensor. <Ref. to
6-2 [W1400].>3H46 : CHECK HARNESS CONNECTOR
BETWEEN CRUISE CONTROL MOD-
ULE AND AUTOMATIC TRANSMIS-
SION CONTROL MODULE.
1) Disconnect connector from automatic transmis-
sion control module and cruise control module.
2) Measure resistance between cruise control
module connector and automatic transmission
control module connector.
CAUTION:
To measure the voltage and/or resistance, use
a tapered pin with a diameter of less than 0.64
mm (0.025 in). Do not insert the pin more than
5 mm (0.20 in).
Connector & terminal
(B94) No. 18 Ð (B56) No. 17:
S6M0341A
:Is the resistance less than 10W?
: Go to step3H47.
: Repair harness connector between
cruise control module and automatic
transmission control module.
40
6-2[T3H4]DIAGNOSTICS
3. Cruise Control System

3. Front Seat Belt
A: REMOVAL AND INSTALLATION
WARNING:
Replace front seat belt worn by occupants of a
vehicle that has been in a serious accident. The
entire assembly should be replaced even if
damage is not obvious.
1. OUTER BELT
1) Remove anchor cover.
2) Remove shoulder anchor bolt (A).
3) Remove center pillar cover (B). <Ref. to 5-3
[W5A1].>
S5M0231B
4) Remove center lower pillar trim panel. <Ref. to
5-3 [W5A1].>
5) Remove webbing guide.
S5M0233
G5M0653
6) Remove lap anchor bolt.
7) Remove belt retractor and outer belt.
S5M0232
8) Install in the reverse order of removal.
CAUTION:
IThe left and right ELR's are not mutually
interchangeable because different sensors are
used.
IBe careful not to twist belts during installa-
tion.
2. INNER BELT
1) Disconnect connector.
2) Remove anchor bolt and then detach inner belt.
S5M0234
3) Install in the reverse order of removal.
10
5-3[W3A0]SERVICE PROCEDURE
3. Front Seat Belt

1. SRS Airbag
S5M0418A
(1) Combination switch ASSY with
roll connector
(2) TORXTbolt T30
(3) Airbag module ASSY (Driver)
(4) Airbag module ASSY (Passen-
ger)
(5) Airbag control module
(6) TORXTbolt T40
(7) Side airbag sensor(8) Side airbag module
(9) Side airbag harness (RH)
(10) Side airbag harness (LH)
(11) Airbag main harness
(12) Front sub sensor (RH)
(13) Front sub sensor harness (RH)
(14) Front sub sensor harness (LH)
(15) Front sub sensor (LH)Tightening torque: N´m (kg-m, ft-lb)
T1:
4.4±1.5 (0.45±0.15, 3.3±1.1)
T2:7.4±2.0 (0.75±0.2, 5.4±1.4)
T3:10±2 (1.0±0.2, 7.2±1.4)
T4:20±4 (2.0±0.4, 14.5±2.9)
T5:25±2 (2.5±0.2, 18.1±1.4)
2
5-5[C100]COMPONENT PARTS
1. SRS Airbag