battery SUBARU FORESTER 1999 Service Repair Manual

4D3 : CHECK AIRBAG WARNING LIGHT
ILLUMINATES.
1) Turn ignition switch to OFF. Disconnect battery
ground cable, and wait 20 seconds.
2) Remove glove box and
disconnect passenger's airbag module connector
(AB9) to (AB10).
3) Connect test harness F connector (1F) to
(AB9).
4) Connect airbag resistor to test harness F con-
nector (3F).
S5M0249A
5) Connect battery ground cable and turn ignition
switch to ON.
6) Check airbag warning light illuminates.
NOTE:
In some cases the airbag warning light will go OFF
after about 7 seconds but will turn ON again within
30 seconds. In this case continue diagnostics with
the basic diagnostics procedures or trouble code
procedures.
:Does airbag warning light go off after
about 7 seconds and remain off for
more than 30 seconds?
: Replace with a new passenger's airbag
module. Go to
step4D6.
: Perform diagnostics and repair accord-
ing to indicated trouble code. 5-5 [T5A0].>4D4 : CHECK AIRBAG WARNING LIGHT
ILLUMINATES.
1) Turn ignition switch to ªOFFº. Disconnect bat-
tery ground cable, and wait 20 seconds.
2) Connect connector (AB8) to (AB3).
3) Remove driver's airbag module and connect
test harness F connector (1F) to (AB7). 5-5 [W3A1].>
4) Connect airbag resistor to test harness F con-
nector (3F).
S5M0251A
5) Connect battery ground cable and turn ignition
switch to ON.
6) Check airbag warning light illuminates.
NOTE:
In some cases the airbag warning light will go OFF
after about 7 seconds but will turn ON again within
30 seconds. In this case continue diagnostics with
the basic diagnostics procedures or trouble code
procedures.
:Does airbag warning light go off after
about 7 seconds and remain off for
more than 30 seconds?
: Replace with a new driver's airbag mod-
ule. Go to step
4D6.
: Go to step4D5.
13
[T4D4]5-5DIAGNOSTICS
4. Diagnostics Chart for On-board Diagnostic System

4D5 : CHECK AIRBAG WARNING LIGHT
ILLUMINATES.
1) Turn ignition switch to OFF. Disconnect battery
ground cable, and wait 20 seconds.
2) Remove lower cover panel and connect test
harness F connector (1F) to (AB8) [W1A0].> with airbag resistor attached to test har-
ness F connector (3F).
S5M0250A
3) Connect battery ground cable and turn ignition
switch to ON.
4) Check airbag warning light illuminates.
NOTE:
In some cases the airbag warning light will go OFF
after about 7 seconds but will turn ON again within
30 seconds. In this case continue diagnostics with
the basic diagnostics procedures or trouble code
procedures.
:Does airbag warning light go off after
about 7 seconds and remain off for
more than 30 seconds?
: Replace with a new roll connector. to 5-5 [W800].> Go to step4D6.
: Perform diagnostics and repair accord-
ing to indicated trouble code. 5-5 [T5A0].>4D6 : CHECK AIRBAG WARNING LIGHT
ILLUMINATES.
1) Connect battery ground cable and turn ignition
switch to ON.
2) Check airbag warning light illuminates.
NOTE:
In some cases the airbag warning light will go OFF
after about 7 seconds but will turn ON again within
30 seconds. In this case continue diagnostics with
the basic diagnostics procedures or trouble code
procedures.
:Does airbag warning light go off after
about 7 seconds and remain off for
more than 30 seconds?
: Perform clear memory. [T4C0].>
: Go to step4D1.
14
5-5[T4D5]DIAGNOSTICS
4. Diagnostics Chart for On-board Diagnostic System

B: TROUBLE CODE 11
DIAGNOSIS:
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.
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).5B1 : AIRBAG MAIN HARNESS INSPEC-
TION
1) Remove lower cover panel [W1A0].>, and connect connector (AB8) below
steering column to test harness F connector (1F).
S5M0258A
2) Disconnect connector (AB6) [W6A0].> from airbag control module, and connect
it to test harness I or I2 connector (1I) terminal.
3) Measure resistance between test harness I or
I2 connector (2I) and test harness F connector (3F)
terminals.
Connector & terminal
(2I) No. 1 Ð (3F) No. 3:
S5M0259B
:Is resistance less than 10W?
: Go to step5B2.
: Replace airbag main harness. 5-5 [W4A0].>
17
[T5B1]5-5DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

C: TROUBLE CODE 12
DIAGNOSIS:
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.
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).
5C1 : AIRBAG MAIN HARNESS INSPEC-
TION
1) Remove glove box.
2) Disconnect connector (AB9) and (AB10) to 5-5 [W3A2].> and connect connector (AB9) to
test harness F connector (1F).
3) Disconnect connector (AB6) [W6A0].> from airbag control module, and connect
it to test harness I or I2 connector (1I) terminal.
4) Measure resistance between test harness I or
I2 connector (2I) and test harness F connector (3F)
terminals.
Connector & terminal
(2I) No. 2 Ð (3F) No. 3:
S5M0262B
:Is resistance less than 10W?
: Go to step5C2.
: Replace airbag main harness. 5-5 [W4A0].>5C2 : AIRBAG MAIN HARNESS INSPEC-
TION
Measure resistance between test harness I or I2
connector (2I) and test harness F connector (3F)
terminals.
Connector & terminal
(2I) No. 5 Ð (3F) No. 4:
S5M0263B
:Is resistance less than 10W?
: Go to step5C3.
: Replace airbag main harness. 5-5 [W4A0].>
5C3 : AIRBAG MAIN HARNESS INSPEC-
TION
1) Disconnect connector (AB6) from airbag control
module , and connect it to
test harness I or I2 connector (1I).
2) Measure resistance between test harness I or
I2 connector (2I) terminal.
Connector & terminal
(2I) No. 2 Ð No. 5:
S5M0252B
:Is resistance more than 10 kW?
: Go to step5C4.
: Replace airbag main harness. 5-5 [W4A0].>
19
[T5C3]5-5DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

5C4 : AIRBAG MAIN HARNESS INSPEC-
TION
1) Disconnect connector (AB6) from airbag control
module , and connect it to
test harness I or I2 connector (1I).
2) Measure resistance between test harness I or
I2 connector (2I) terminals and chassis ground.
Connector & terminal
(2I) No. 2 (+) Ð Chassis ground (þ):
S5M0278B
:Is resistance more than 1 MW?
: Go to step5C5.
: Replace airbag main harness. 5-5 [W4A0].>
5C5 : AIRBAG MAIN HARNESS INSPEC-
TION
Measure resistance between test harness I or I2
connector (2I) terminals and chassis ground.
Connector & terminal
(2I) No. 5 (+) Ð Chassis ground (þ):
S5M0279B
:Is resistance more than 1 MW?
: Replace airbag control module. 5-5 [W6A0].>
: Replace airbag main harness. 5-5 [W4A0].>
D: TROUBLE CODE 15
DIAGNOSIS:
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.
CAUTION:
Before performing diagnostics on airbag
system, turn ignition switch ªOFFº, disconnect
battery ground terminal and then wait at least
20 seconds.
After 20 seconds elapse, remove instrument
panel lower cover, and disconnect (AB3) and
(AB8), (AB9) and (AB10).
5D1 : AIRBAG MAIN HARNESS 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 each test harness I or
I2 connector (2I) terminal and chassis ground.
Connector & terminal
(2I) No. 4 (+) Ð Chassis ground (þ):
S5M0280B
:Is voltage less than 1 V?
: Go to step5D2.
: Replace airbag main harness. 5-5 [W4A0].>
20
5-5[T5C4]DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

5D2 : AIRBAG MAIN HARNESS INSPEC-
TION
Measure voltage across each test harness I or I2
connector (2I) terminal and chassis ground.
Connector & terminal
(2I) No. 1 (+) Ð Chassis ground (þ):
S5M0281B
:Is voltage less than 1 V?
: Replace airbag control module. 5-5 [W6A0].>
: Replace airbag main harness. 5-5 [W4A0].>
E: TROUBLE CODE 16
DIAGNOSIS:
IAirbag main harness circuit (Passenger) is
shorted to power supply.
IAirbag module harness (Passenger) is shorted
to power supply.
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.
After 20 seconds elapse, remove instrument
panel lower cover, and disconnect (AB3) and
(AB8), (AB9) and (AB10).
5E1 : AIRBAG MAIN HARNESS 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 each test harness I or
I2 connector (2I) terminal and chassis ground.
Connector & terminal
(2I) No. 2 (+) Ð Chassis ground (þ):
S5M0274B
:Is voltage less than 1 V?
: Go to step5E2.
: Replace airbag main harness. 5-5 [W4A0].>
21
[T5E1]5-5DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

5E2 : AIRBAG MAIN HARNESS INSPEC-
TION
Measure voltage across each test harness I or I2
connector (2I) terminal and chassis ground.
Connector & terminal
(2I) No. 5 (+) Ð Chassis ground (þ):
S5M0275B
:Is voltage less than 1 V?
: Replace airbag control module. 5-5 [W6A0].>
: Replace airbag main harness. 5-5 [W4A0].>
F: TROUBLE CODE 21
DIAGNOSIS:
Airbag 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.
5F1 : CHECK IF TROUBLE CODE 21 IS
INDICATED.
Confirm flashing trouble code according to ªBASIC
DIAGNOSTICS PROCEDUREº. [T4A0].>
:Is airbag warning light trouble code
21 indicated?
: Replace airbag control module. 5-5 [W6A0].>
: Perform clear memory. [T4C0].>
22
5-5[T5E2]DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

G: TROUBLE CODE 22
DIAGNOSIS:
Front airbag module is inflated.
CAUTION:
Before performing diagnostics on airbag
system, turn ignition switch ªOFFº, disconnect
battery ground terminal, and then wait at least
20 seconds.
5G1 : CHECK IF TROUBLE CODE 22 IS
INDICATED.
Confirm flashing trouble code according to ªBASIC
DIAGNOSTICS PROCEDUREº. [T4A0].>
:Is airbag warning light trouble code
22 indicated?
: Replace airbag control module 5-5 [W6A0].>, front sub sensor 5-5 [W9A0].> and front airbag module of
both sides.
: Perform clear memory. [T4C0].>
H: TROUBLE CODE 23
DIAGNOSIS:
(AB6), (AB17) and (AB18) are not connected prop-
erly to airbag control module.
CAUTION:
Before performing diagnostics on airbag
system, turn ignition switch ªOFFº, disconnect
battery ground cable and then wait at least 20
seconds.
5H1 : CHECK POOR CONTACT IN CON-
NECTORS (AB6), (AB17) AND (AB18).
Check connectors (AB6), (AB17) and (AB18) con-
nected to airbag control module. [W6A0].>
:Is there poor contact in connectors
(AB6), (AB17) and (AB18)?
: Repair poor contact in connectors
(AB6), (AB17) and (AB18).
: Replace airbag control module. 5-5 [W6A0].>
23
[T5H1]5-5DIAGNOSTICS
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

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