1997 SUBARU LEGACY Service Repair Manual

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Page 3073 of 3342

SUBARU LEGACY 1997 Service Repair Manual 12) Turn ignition switch“OFF”, disconnect battery ground cable,
and wait 20 seconds. Connect connector (AB3) to (AB8). Dis-
connect passenger side airbag module connector (AB9) to
(AB10). <Ref. to

12) Turn ignition switch“OFF”, disconnect battery ground cable,
and wait 20 seconds. Connect connector (AB3) to (AB8). Dis-
connect passenger side airbag module connector (AB9) to
(AB10).
Connect test harness C connector (1C) to (AB9). Connect
airbag resistor to test harness C connector (3C).
B5M0118A
13) Reconnect battery ground cable and turn ignition switch“ON”. Does airbag warning light go“OFF”after 8 seconds and remain off
for more than 30 seconds? See notes 1) and 2). (Refer to end of chart.)
14) If“YES”, proceed to step 9).
15) If“NO”, turn ignition switch“OFF”, disconnect battery ground
cable, and wait 20 seconds. Disconnect connector (AB3) to
(AB8). Connect test harness C connector (1C) to (AB8). Con-
nect airbag resistor to test harness C connector (3C).
G5M0429
16) Reconnect battery ground cable and turn ignition switch“ON”. Does airbag warning light go“OFF”after 8 seconds and remain off
for more than 30 seconds? See notes 1) and 2). (Refer to end of chart.)
17) If“YES”, turn ignition switch“OFF”, disconnect battery ground cable and wait 20 seconds. Install a new passenger side airbag
module then proceed to step 5).
18) If“NO”, proceed with diagnostics according to trouble code indicated during on-board diagnostic. Proceed to step 29).
19) Reconnect battery ground cable and turn ignition switch“ON”, does airbag warning light go out after 8 seconds and remain
“OFF”for more than 30 seconds? See notes 1) and 2). (Refer to end of chart.)
20) If“YES”, turn ignition switch“OFF”, disconnect battery ground cable and wait 20 seconds. Install driver side airbag module to 5-5 [W3B0].> and proceed to step 29).
21) If“NO”, remove lower cover panel and connect test harness
C connector (1C) to (AB8) with airbag
resistor attached to test harness C connector (3C).
Turn ignition switch“ON”. Does airbag warning light go“OFF”
after 8 seconds and remain off for more than 30 seconds?
See notes 1) and 2). (Refer to end of chart.)
If“YES”proceed to step 22).
If“NO”proceed to step 23).
G5M0429
22) If“YES”, replace combination switch, and proceed to step 26).
23) If“NO”, proceed with diagnostics and repair according to trouble code indicated, then perform step 24).
13
5-5SUPPLEMENTAL RESTRAINT SYSTEM
4. Diagnostics Chart for On-board Diagnostic System

Page 3074 of 3342

SUBARU LEGACY 1997 Service Repair Manual 24) Turn ignition switch“OFF”, disconnect battery ground cable,
and wait 20 seconds. Remove driver side airbag module and
connect test harness C connector (1C) to (AB7) <Ref. to 5-5
[W3A1].> with

Page 3075 of 3342

SUBARU LEGACY 1997 Service Repair Manual 5. Diagnostics Chart with Trouble Code
<Ref. to 5-5 [T4D1].>
A: TROUBLE CODE 02
DIAGNOSIS:
Front sensor harness is shorted.
Airbag main harness is shorted.
Airbag module harness (Driver or passenge

Page 3076 of 3342

SUBARU LEGACY 1997 Service Repair Manual G5M0558
1. FRONT SENSOR AND HARNESS INSPECTION
1) Disconnect connectors (AB4) and (AB5) from airbag
control module. <Ref. to 5-5 [W6A0].>
2) Connect connectors (AB4) and (AB5) to connector (8B)
of tes

Page 3077 of 3342

SUBARU LEGACY 1997 Service Repair Manual B: TROUBLE CODE 03
DIAGNOSIS:
Front sensor harness circuit is open.
Front sensor unit circuit is open.
1. Front sensor (LH and RH) inspectionIdentify faulty sensor and replace front sensor.
CAUTION

Page 3078 of 3342

SUBARU LEGACY 1997 Service Repair Manual C: TROUBLE CODE 04
DIAGNOSIS:
Airbag main harness circuit is shorted.
Airbag module harness (Passenger) circuit is shorted.
Airbag control module is faulty.
1. Airbag main harness inspection
O.K.

Page 3079 of 3342

SUBARU LEGACY 1997 Service Repair Manual D: TROUBLE CODE 11
DIAGNOSIS:
Airbag control module is faulty.
Airbag main harness circuit is open.
Fuse No. 8 is blown.
Body harness circuit is open.
1. Airbag control module inspection
Not O.K.

Page 3080 of 3342

SUBARU LEGACY 1997 Service Repair Manual B5M0119B
3) Disconnect body harness connector (B31) from connec-
tor (AB1) at front lower pillar, and connect connector (AB1)
to test harness A connector (2A).
4) Measure resistance between test harne

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