Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Legacy 1995-1999 Approved Subaru Legacy 1997 1997 Service Manual 1997 LEGACY MANUAL SUPPLEMENT ABS 5.3I SYSTEM Diagnostics Section MSA5T9712A29597
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>> Download MSA5T9712A29597 documenatation <<Text preview - extract from the document4-4d [T1oo] BRAKES [ABS 5.31 TYPE]
1 . Supplemental Restraint System "Airbag" - 2. Pre-inspection
1 . Supplemental Restraint System
"Airbag"
Airbag system wiring harness is routed near the ABS
sensor, ABS control module and hydraulic control unit .
CAUTION:
All Airbag system wiring harness and connectors are
colored yellow. Do not use electrical test equipment on
these circuit .
e Be careful not to damage Airbag system wiring har-
ness when servicing the ABS sensor, ABS control mod-
ule and hydraulic control unit.
2. Pre-inspection
Before performing diagnostics, check the following items
which might affect ABS problems :
A: MECHANICAL INSPECTION
1 . POWER SUPPLY
1) Measure battery voltage and specific gravity of electro-
lyte .
Standard voltage: 12 V, or more
Specific gravity: Above 1 .260
2) Check the condition of the main and other fuses, and
harnesses and connectors . Also check for proper ground-
ing.
2. BRAKE FLUID
1) Check brake fluid level.
2) Check brake fluid leakage.
3. BRAKE DRAG
Check brake drag . < Ref. to 4-4 [K100] .*1 >
4. BRAKE PAD AND ROTOR
Check brake pad and rotor. < Ref. to 4-4 [K100] .*1 >
5. TIRE SPECIFICATIONS, TIRE WEAR AND AIR
PRESSURE
Check tire specifications, tire wear and air pressure . < Ref.
to 4-2 [S1 A1 ], [S1 A2] .*1 >
2
BRAKES [ABS 5.3i TYPE] [TZBi] 4-4d
2. Pre-inspection
B: ELECTRICAL INSPECTION
1 . WARNING LIGHT ILLUMINATION PATTERN
START
ON r~ ON
OFF
Ignition key switch
Illuminates.
Goes out. Goes out.
ABS warning light
1 .5 s
4 111
B4M0781A
1) When the ABS warning light does not illuminate in
accordance with this illumination pattern, there must be
an electrical malfunction .
2) When the ABS warning light remains constantly OFF,
repair the ABS warning light circuit or diagnosis circuit.
[
NOTE :
Even though the ABS warning light does not go out 1 .5
seconds after it illuminates, the ABS system operates nor-
mally when the warning light goes out while driving at
approximately 12 km/h (7 MPH) . However, the Anti-lock
brakes do not work while the ABS warning light is illumi-
nated .
3
]
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