fuse box SUBARU FORESTER 1999 Service Repair Manual

5. Diagnostics Chart with Trouble Code
A: TROUBLE CODES
1. LIST OF TROUBLE CODES
Trouble code/
Contents of troublesMemory function Contents of diagnosis Index No.
11 Provided.IAirbag main harness circuit is open, shorted or
shorted to ground.
IAirbag module harness (driver) circuit is open,
shorted or shorted to ground.
IRoll connector circuit is open, shorted or shorted
to ground.
IAirbag control module is faulty.
12 Provided.IAirbag main harness circuit is open, shorted or
shorted to ground.
IAirbag module harness (passenger) circuit is
open, shorted or shorted to ground.
IAirbag control module is faulty.
15 Provided.IAirbag main harness circuit (driver) is shorted to
power supply.
IAirbag module harness (driver) is shorted to
power supply.
IRoll connector is shorted to power supply.
IAirbag control module is faulty.
16 Provided.IAirbag main harness circuit (passenger) is
shorted to power supply.
IAirbag module harness (passenger) is shorted to
power supply.
IAirbag control module is faulty.
21 Provided. Airbag control module is faulty.
22 Provided. Front airbag module is inflated.
23 Not provided.(AB6), (AB17) and (AB18) are not connected prop-
erly to airbag control module.
24 Not provided.IAirbag control module is faulty.
IAirbag main harness circuit is open.
IFuse No. 11 (in joint box) is blown.
IBody harness circuit is open.
25 Provided.IAirbag control module is faulty.
IAirbag main harness circuit is open.
IFuse No. 6 (in joint box) is blown.
IBody harness circuit is open.
31 Provided.IFront sub sensor harness (RH) circuit is shorted.
IFront sub sensor harness (RH) circuit is open.
IFront sub sensor (RH) is faulty.
IAirbag control module is faulty.
32 Provided.IFront sub sensor harness (LH) circuit is shorted.
IFront sub sensor harness (LH) circuit is open.
IFront sub sensor (LH) is faulty.
IAirbag control module is faulty.
41 Provided.ISide airbag harness (RH) is faulty.
ISide airbag module (RH) is faulty.
IAirbag control module is faulty.
42 Provided.ISide airbag harness (LH) is faulty.
ISide airbag module (LH) is faulty.
IAirbag control module is faulty.
45 Provided.ISide airbag harness (RH) is faulty.
IAirbag control module is faulty.
15
[T5A1]5-5DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

Trouble code/
Contents of troublesMemory function Contents of diagnosis Index No.
46 Provided.ISide airbag harness (LH) is faulty.
IAirbag control module is faulty.
51 Provided.ISide airbag sensor (RH) is faulty.
ISide airbag harness (RH) is faulty.
IAirbag control module is faulty.
52 Provided.ISide airbag sensor (LH) is faulty.
ISide airbag harness (LH) is faulty.
IAirbag control module is faulty.
53 Provided. Side airbag sensor (RH) is faulty.
54 Provided. Side airbag sensor (LH) is faulty.
55 Provided. Side airbag module is inflated.
Airbag warning light remains
on.Not provided.IAirbag warning light is faulty.
IAirbag control module to airbag warning light
harness circuit is shorted or open.
IGrounding circuit is faulty.
IAirbag control module is faulty.
I(AB1) and (B31) are not connected properly.
I(AB6) is not connected properly to airbag control
module.
Airbag warning light remains
off.Not provided.IFuse No. 5 (in main fuse box) is blown.
IBody harness circuit is open.
IAirbag warning light is faulty.
IAirbag main harness is faulty.
IAirbag control module is faulty.
Warning light indicates
trouble code, then normal
code. (Flashing trouble
code.)Provided. Airbag system component parts are faulty.
Warning light indicates
trouble code, then normal
code. (Flashing normal
code.)Not provided.IAirbag connector is faulty.
IFuse No. 11 (in joint box) is blown.
IAirbag main harness is faulty.
IAirbag control module is faulty.
IBody harness is faulty.
2. HOW TO READ TROUBLE CODES
The AIRBAG warning light flashes a code corresponding to the faulty parts.
The long segment (1.2 sec on) indicates a ªtenº, and the short segment (0.3 sec on) indicates a ªoneº.
B5M0117A
16
5-5[T5A2]DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

I: TROUBLE CODE 24
DIAGNOSIS:
IAirbag control module is faulty.
IAirbag main harness circuit is open.
IFuse No. 11 (in joint box) is blown.
IBody harness circuit is open.
CAUTION:
Before performing diagnostics on airbag
system, turn ignition switch ªOFFº, disconnect
battery ground cable and then wait at least 20
seconds.
After 20 seconds elapse, remove instrument
panel lower cover, and disconnect (AB3) and
(AB8), (AB9) and (AB10).
5I1 : AIRBAG CONTROL MODULE INSPEC-
TION
1) Disconnect connector (AB6) from airbag control
module , and connect it to
test harness I or I2 connector (1I).
2) Connect battery ground cable and turn ignition
switch ªONº (engine off).
3) Measure voltage across connector (2I) terminal
and chassis ground.
Connector & terminal
(2I) No. 3 (+) Ð Chassis ground (þ):
S5M0264B
:Is voltage more than 10 V?
: Replace airbag control module. 5-5 [W6A0].>
: Go to step5I2.5I2 : AIRBAG MAIN HARNESS INSPEC-
TION
1) Go to following procedure after performing
diagnostics on airbag system as per diagnosis pro-
cedure under ª5I1 AIRBAG CONTROL MODULE
INSPECTIONº previously out-
lined.
2) Turn ignition switch ªOFFº, disconnect battery
ground cable and then wait at least 20 seconds.
3) Disconnect connector (AB1) from body harness
connector (B31) located in front pillar lower (driver
side), and connect connector (AB1) to test harness
A connector (2A).
B5M0122B
4) Measure resistance between test harness A
connector (5A) and test harness I or I2 connector
(2I) terminals.
Connector & terminal
(5A) No. 9 Ð (2I) No. 3:
S5M0265B
:Is resistance less than 10W?
: Go to step5I3.
: Replace airbag main harness. 5-5 [W4A0].>
24
5-5[T5I0]DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

5I3 : AIRBAG MAIN HARNESS INSPEC-
TION
Measure resistance between each terminal of con-
nectors (5A) and chassis ground.
Connector & terminal
(5A) No. 9 (+) Ð Chassis ground (þ):
S5M0266A
:Is resistance more than 10 kW?
: Go to step5I4.
: Replace airbag main harness. 5-5 [W4A0].>
5I4 : AIRBAG MAIN HARNESS INSPEC-
TION
Measure resistance between each terminal of con-
nectors (2I) and chassis ground.
Connector & terminal
(2I) No. 3 (+) Ð Chassis ground (þ):
S5M0267B
:Is resistance more than 10 kW?
: Go to step5I5.
: Replace airbag main harness. 5-5 [W4A0].>5I5 : FUSE NO. 11 (IN JOINT BOX) INSPEC-
TION
Make sure ignition switch is turned ªOFFº, then
remove and visually check fuse No. 11 (in joint
box).
S5M0257B
:Is fuse No. 11 blown?
: Replace fuse No. 11. If fuse No. 11
blows again, repair body harness.
: Repair body harness.
25
[T5I5]5-5DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

J: TROUBLE CODE 25
DIAGNOSIS:
IAirbag control module is faulty.
IAirbag main harness circuit is open.
IFuse No. 6 (in joint box) is blown.
IBody harness circuit is open.
CAUTION:
Before performing diagnostics on airbag
system, turn ignition switch ªOFFº, disconnect
battery ground cable and then wait at least 20
seconds.
After 20 seconds elapse, remove instrument
panel lower cover, and disconnect (AB3) and
(AB8), (AB9) and (AB10).
5J1 : AIRBAG CONTROL MODULE
INSPECTION
1) Disconnect connector (AB6) from airbag control
module and connect it to test
harness I or I2 connector (1I).
2) Connect battery ground cable and turn ignition
switch ªONº. (engine off)
3) Measure voltage across connector (2I) terminal
and chassis ground.
Connector & terminal
(2I) No. 6 (+) Ð Chassis ground (þ):
S5M0253B
:Is voltage more than 10 V?
: Replace airbag control module. 5-5 [W6A0].>
: Go to step5J2.5J2 : AIRBAG MAIN HARNESS INSPEC-
TION
1) Go to following procedure after performing
diagnostics on airbag system as per diagnosis pro-
cedure under ª5J1 AIRBAG CONTROL MODULE
INSPECTIONº previously
outlined.
2) Turn ignition switch ªOFFº, disconnect battery
ground terminal and then wait at least 20 seconds.
3) Disconnect body harness connector (B31) from
connector (AB1) located in front pillar lower (driver
side), and connect connector (AB1) to test harness
A connector (2A).
B5M0122B
4) Measure resistance between test harness A
connector (5A) terminal and test harness I or I2
connector (2I) terminal.
Connector & terminal
(5A) No. 1 Ð (2I) No. 6:
S5M0254B
:Is resistance less than 10W?
: Go to step5J3.
: Replace airbag main harness. 5-5 [W4A0].>
26
5-5[T5J0]DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

5J3 : AIRBAG MAIN HARNESS INSPEC-
TION
Measure resistance between (5A) connector termi-
nal and chassis ground.
Connector & terminal
(5A) No. 1 (+) Ð Chassis ground (þ):
S5M0255A
:Is resistance more than 10 kW?
: Go to step5J4.
: Replace airbag main harness. 5-5 [W4A0].>
5J4 : AIRBAG MAIN HARNESS INSPEC-
TION
Measure resistance between (2I) connector termi-
nal and chassis ground.
Connector & terminal
(2I) No. 6 (+) Ð Chassis ground (þ):
S5M0256B
:Is resistance more than 10 kW?
: Go to step5J5.
: Replace airbag main harness. 5-5 [W4A0].>5J5 : FUSE NO. 6 (IN JOINT BOX) INSPEC-
TION
1) Turn ignition switch ªOFFº.
2) Remove and visually check fuse No. 6 (in joint
box).
S5M0257A
:Is fuse No. 6 blown?
: Replace fuse No. 6 if fuse No. 6 blows
again, repair body harness.
: Repair body harness.
27
[T5J5]5-5DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

5V8 : INSPECTION OF AIRBAG MAIN HAR-
NESS
1) Connect connectors (AB1) and (B31). Discon-
nect connector (AB6) from airbag control module
, and connect it to test har-
ness I or I2 connector (1I).
2) Measure resistance between each test harness
I or I2 connector (2I) terminal and chassis ground.
Connector & terminal
(2I) No. 9 (+) Ð Chassis ground (þ):
S5M0271B
:Is resistance less than 10W?
: Go to step5V9.
: Replace airbag main harness. 5-5 [W4A0].>
5V9 : INSPECTION OF AIRBAG MAIN HAR-
NESS
Measure resistance between each test harness I
or I2 connector (2I) terminal and chassis ground.
Connector & terminal
(2I) No. 10 (+) Ð Chassis ground (þ):
S5M0272B
:Is resistance less than 10W?
: Replace airbag control module. 5-5 [W6A0].>
: Replace airbag main harness. 5-5 [W4A0].>
W: AIRBAG WARNING LIGHT
REMAINS OFF.
DIAGNOSIS:
IFuse No. 5 (in main fuse box) is blown.
IBody harness circuit is open.
IAirbag warning light is faulty.
IAirbag main harness is faulty.
IAirbag control module is faulty.
CAUTION:
Before performing diagnostics on airbag
system, turn ignition switch ªOFFº, disconnect
battery ground terminal, and then wait at least
20 seconds.
5W1 : FUSE NO. 5 (IN MAIN FUSE BOX)
INSPECTION
Remove and visually check fuse No. 5 (In main
fuse box).
S5M0273A
:Is fuse No. 5 blown?
: Replace fuse No. 5. If fuse No. 5 blows
again, Go to step5W2.
: Go to step5W2.
5W2 : BODY HARNESS INSPECTION
Turn ignition switch ªONº (engine off) to make sure
other warning lights (in combination meter) illumi-
nate.
:Do all the warning lights (in combina-
tion meter) except airbag warning
light come on?
: Go to step5W3.
: Repair body harness.
58
5-5[T5V8]DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

3) Conduct appearance inspection on parts
selected.
NOTE:
Also check connector terminals, wiring harness,
case, etc. for damage.
:Is there anything unusual about the
appearance of airbag component
parts?
: Replace faulty airbag component parts.
: Go to step5X2.
5X2 : AIRBAG COMPONENT PARTS
VIBRATION INSPECTION
1) Gently shake check parts (to determine faults.).
2) To check airbag module or roll connector, turn
and tilt steering wheel.
CAUTION:
Do not shake or vibrate airbag control module.
:Does the component malfunction
again when shaking?
: Replace faulty airbag component parts.
: Go to step5X3.
5X3 : SHOWERING INSPECTION TO BODY
Spray water on vehicle body.
CAUTION:
Do not directly spray water on airbag compo-
nents.
NOTE:
Also check wiring harnesses as water may leak
along them and get airbag component parts wet.
G5M0461
:Does water leak into the passenger
compartment when showering
vehicle?
: Replace faulty airbag component parts.
: Perform clear memory. [T4C0].>
Y: WARNING LIGHT INDICATES
TROUBLE CODE, THEN NORMAL
CODE. (FLASHING NORMAL CODE.)
DIAGNOSIS:
IAirbag connector is faulty.
IFuse No. 11 (in joint box) is blown.
IAirbag main harness is faulty.
IAirbag control module is faulty.
IBody harness is faulty.
CAUTION:
Before performing diagnostics on airbag
system, turn ignition switch ªOFFº, disconnect
battery ground cable, and then wait at least 20
seconds.
5Y1 : AIRBAG CONNECTOR APPEARANCE
INSPECTION
Conduct appearance inspection on airbag connec-
tors (AB1) through (AB28).
NOTE:
Check terminals, case and wiring harnesses for
damage.
:Is there anything unusual about the
appearance of connectors (AB1)
through (AB28)?
: Replace faulty airbag component parts.
: Go to step5Y2.
5Y2 : AIRBAG CONNECTOR VIBRATION
INSPECTION
Conduct vibration inspection on airbag connectors
(AB1) through (AB28).
NOTE:
Gently shake each airbag connector.
:Do the connectors (AB1) through
(AB28) malfunction again when shak-
ing?
: Replace faulty airbag component parts.
: Go to step5Y3.
61
[T5Y2]5-5DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

5Y3 : SHOWERING INSPECTION TO BODY
Spray water on vehicle body.
CAUTION:
Do not directly spray water on airbag compo-
nents.
NOTE:
If leaks are noted, also check wiring harnesses as
water may leak along them and wet airbag connec-
tors.
G5M0461
:Does water leak into the passenger
compartment when showering
vehicle?
: Replace faulty airbag component parts.
: Go to step5Y4.
5Y4 : FUSE NO. 11 (IN JOINT BOX), AIR-
BAG MAIN HARNESS, AIRBAG CON-
TROL MODULE, BODY HARNESS
APPEARANCE INSPECTION
Conduct appearance inspection on fuse No. 11
, airbag main harness 5-5 [W4A0].>, airbag control module [W6A0].> and body harness.
NOTE:
Also check connectors, terminals, wiring harness
and case for damage.
:Is there anything unusual about the
appearance of fuse No. 11, airbag
main harness, airbag control module
or body harness?
: Replace faulty airbag component parts.
: Go to step5Y5.5Y5 : FUSE NO. 11 (IN JOINT BOX), AIR-
BAG MAIN HARNESS, BODY HAR-
NESS VIBRATION INSPECTION
Conduct vibration inspection on fuse No. 11, airbag
main harness and body harness.
CAUTION:
Do not shake or vibrate airbag control module.
NOTE:
Gently shake each part.
:Do fuse No. 11, airbag main harness
or body harness malfunction again
when shaking?
: Replace faulty airbag component parts.
: Go to step5Y6.
5Y6 : SHOWERING INSPECTION TO BODY
Spray water on vehicle body.
CAUTION:
Do not directly spray water on each part.
NOTE:
If leaks are noted, check wiring harnesses as water
may leak along them and get parts wet.
G5M0461
:Does water leak into the passenger
compartment when showering
vehicle?
: Replace faulty airbag component parts.
: Go to step5Y7.
62
5-5[T5Y3]DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

3G31 : CHECK FUSE.
Check fuse No. 18.
S6M0110A
:Is fuse No. 18 blown?
: Replace fuse No. 18. Go to step3G32.
: Go to step3G32.
3G32 : CHECK POWER SUPPLY.
1) Turn ignition switch to ON.
2) Measure voltage between fuse & relay box con-
nector and chassis ground.
Connector & terminal
(B152) No. 5 (+) Ð Chassis ground (þ):
:Is voltage more than 10 V?
: Go to step3G33.
: Replace fuse No. 18. When fuse No. 18
is blown again, repair shorted parts of
circuit.3G33 : CHECK CRUISE CONTROL MAIN
SWITCH.
1) Turn ignition switch to OFF.
2) Remove cruise control main switch and discon-
nect connector.
3) Turn ignition switch to ON.
4) Measure voltage between cruise control main
switch connector and chassis ground.
Connector & terminal
(B161) No. 3 (+) Ð Chassis ground (þ):
B6M0183C
:Is voltage more than 10 V?
: Go to step3G34.
: Replace cruise control main switch.

3G34 : CHECK CRUISE CONTROL MAIN
SWITCH.
Measure resistance between cruise control main
switch terminals.
Terminals
No. 3 Ð No. 5:
G6M0244
:Is resistance less than 10W? (When
switch is ON.)
: Go to step3G35.
: Replace cruise control main switch.

27
[T3G3]6-2DIAGNOSTICS
3. Cruise Control System