1995 SUBARU LEGACY Service Repair Manual

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Page 1817 of 2248

SUBARU LEGACY 1995 Service Repair Manual 4. Diagnostics Chart for On-board
Diagnostic System
A: BASIC DIAGNOSTICS PROCEDURE
8
5-5SUPPLEMENTAL RESTRAINT SYSTEM
4. Diagnostics Chart for On-board Diagnostic System

Page 1818 of 2248

SUBARU LEGACY 1995 Service Repair Manual B5M0115B
B: ON-BOARD DIAGNOSTIC
When the airbag system is in functioning condition, the
airbag warning light will remain on for 8 seconds and go out
when the ignition switch is set to ON.
If there is

Page 1819 of 2248

SUBARU LEGACY 1995 Service Repair Manual D: LIST OF TROUBLE CODES
1. TROUBLE CODES
Trouble code/Contents of troubles Memory function Contents of diagnosis Page
02 Provided.1) Front sensor harness is shorted.
2) Airbag main harness is shorted

D: LIST OF TROUBLE CODES
1. TROUBLE CODES
Trouble code/Contents of troubles Memory function Contents of diagnosis Page
02 Provided.1) Front sensor harness is shorted.
2) Airbag main harness is shorted.
3) Airbag module harness (Dr/Ps) is shorted.
4) Roll connector is shorted.
5) Airbag control module is faulty.16
03 Provided.1) Front sensor harness circuit is open.
2) Front sensor unit circuit is open.18
04 Provided.1) Airbag main harness circuit is shorted.
2) Airbag module harness (Ps) circuit is shorted.
3) Airbag control module is faulty.19
11 Provided.1) Airbag control module is faulty.
2) Airbag main harness circuit is open.
3) Fuse No. 8 is blown.
4) Body harness circuit is open.20
12 Provided.1) Airbag main harness circuit is open.
2) Airbag module harness (Dr) circuit is open.
3) Roll connector circuit is open.
4) Airbag control module is faulty.22
13 Provided.1) Airbag main harness circuit is shorted.
2) Airbag module harness (Dr) is shorted.
3) Roll connector circuit is shorted.
4) Airbag control module is faulty.23
14 Not provided.1) (AB9) and (AB10) are not connected properly.
2) (AB2) and (AB7) are not connected properly.
3) (AB3) and (AB8) are not connected properly.
4) (AB4), (AB5) and (AB6) are not connected
properly to airbag control module.24
21 Provided. Airbag control module is faulty. 26
22 Provided.1) Airbag main harness circuit is open.
2) Airbag module harness (Ps) circuit is open.
3) Airbag control module is faulty.27
23 Provided.1) Airbag main harness is shorted to power supply.
2) Front sensor harness is shorted to power supply.
3) Airbag module harness (Dr/Ps) is damaged.
4) Roll connector is shorted to power supply.
5) Airbag control module is faulty.28
24 Provided.1) Airbag main harness circuit is open.
2) Airbag module harness (Dr) circuit is open.
3) Roll connector circuit is open.
4) Airbag control module is faulty.
5) Above diagnosis plus other faulty of airbag
modular parts.30
31 Not provided.1) Airbag control module is faulty.
2) Airbag main harness circuit is open.
3) Fuse No. 16 is blown.
4) Body harness circuit is open.32
32 Provided.1) Airbag main harness circuit is open.
2) Airbag module harness (Ps) circuit is open.
3) Airbag control module is faulty.
4) Above diagnosis plus other faulty of airbag
modular parts.34
NOTE: Dr: Driver side Ps: Passenger side
10
5-5SUPPLEMENTAL RESTRAINT SYSTEM
4. Diagnostics Chart for On-board Diagnostic System

Page 1820 of 2248

SUBARU LEGACY 1995 Service Repair Manual Trouble code/Contents of troubles Memory function Contents of diagnosis Page
Airbag warning light remains on. Not provided.1) Airbag warning light is faulty.
2) Airbag control module to airbag warning

Page 1821 of 2248

SUBARU LEGACY 1995 Service Repair Manual E: DIAGNOSTICS PROCEDURE
Airbag warning light stays on after 8 seconds.
1) Perform on-board diagnostic. <Ref. to 5-5 [T4B0].>
2) Are trouble codes 2, 4, 12, 13, 22, 23, 24 or 32 indicated? <Ref. to 5-

Page 1822 of 2248

SUBARU LEGACY 1995 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 1823 of 2248

SUBARU LEGACY 1995 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 1824 of 2248

SUBARU LEGACY 1995 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

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