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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1991 Subaru XT car and truck
repair procedures including Subaru engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work
guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up &
drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install
procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c
system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix
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BRAKE SERVICE PROCEDURES FOR 1991 Subaru XT AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Subaru XT cars and light trucks from 1990+.
SUBARU, ANTI-LOCK BRAKES -> TROUBLESHOOTING
Vehicle: 1991 Subaru XT GL 1.8 H4 GAS
Refer to Figs. through for ABS troubleshooting procedures. The ABS control unit receives and sends signals that control system functions. It is impo...
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BRAKE SERVICE PROCEDURES FOR 1991 Subaru XT AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Subaru XT cars and light trucks from 1990+.
SUBARU, ANTI-LOCK BRAKES -> COMPONENT TESTING -> CHECK G SENSOR CIRCUIT -> CHECK RELAYS -> CHECK VALVE RELAYS -> HYDRAULIC UNIT SOLENOID -> INPUT SIGNAL OF SENSOR TO ABS CONTROL UNIT -> POWER SUPPLY VOLTAGE TO ABS CONTROL UNIT -> SIGNAL EMITTED FROM SENSOR ABS CONTROL UNIT -> SPEED SENSORS
Vehicle: 1991 Subaru XT GL 1.8 H4 GAS
POWER SUPPLY VOLTAGE TO ABS CONTROL UNIT
- Turn ignition switch off.
- Disconnect connector from ABS control unit.
- Disassemble connector as follows:
- Pushing tab Fig. , then disconnect connector.
- Remove screws from connector, move boot toward harness, and slide cover in direction as shown in Fig. .
- Turn ignition On, measure voltage between connector P12 terminal 1 and ground on except SVX models or between connector R7 terminal 1 and ground on SVX models, readings should be 10 and 12 volts.
- Start engine, check input voltage of ABS control unit to alternator.
- Measure voltage between ABS con...
CLICK HERE TO GET FULL ACCESS TO 1991 Subaru XT BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Subaru XT AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Subaru XT cars and light trucks from 1990+.
SUBARU, POWER BRAKE UNITS -> BRAKE BOOSTER REPLACEMENT -> EXCEPT SVX -> SVX
Vehicle: 1991 Subaru XT GL 1.8 H4 GAS
EXCEPT SVX
- Disconnect brake fluid level indicator connector, if equipped.
- Remove master cylinder assembly.
- Disconnect vacuum hose from brake booster.
- Working from inside the passenger compartment, remove snap pin and operating rod clevis pin from brake pedal assembly.
- Remove brake booster retaining nuts, then brake booster from vehicle.
- Reverse procedure to install. Torque brake booster retaining nuts to 9-17 ft. lbs.
SVX
- Disconnect battery ground cable.
- R...
CLICK HERE TO GET FULL ACCESS TO 1991 Subaru XT BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Subaru XT AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Subaru XT cars and light trucks from 1990+.
SUBARU, ANTI-LOCK BRAKES -> DIAGNOSIS -> DIAGNOSTIC TESTS
Vehicle: 1991 Subaru XT GL 1.8 H4 GAS
To perform self diagnosis, drive vehicle at a speed greater than 20 mph for at least one minute. If system is malfunctioning, a warning lamp on the dash panel will come On. Approximately ten seconds after the light comes on, an L.E.D. located on the ABS control unit displays a trouble code. This trouble code is determined by the number of flashes the L.E.D. emits. To read codes, vehicle must remain running. Read ...
[[table data]]CLICK HERE TO GET FULL ACCESS TO 1991 Subaru XT BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Subaru XT AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Subaru XT cars and light trucks from 1990+.
SUBARU, POWER BRAKE UNITS -> DESCRIPTION
Vehicle: 1991 Subaru XT GL 1.8 H4 GAS
The brake booster is located in line between the master cylinder and the brake pedal. It serves to mechanically boost the force pushing the pistons of the master cylinder.
The brake booster consists of a power cylinder section and a power piston section. The power cylinder is made up of a front shell, rear shell and a diaphragm. The front and rear shells are connected with the diaphragm placed in between the two. The power cylinder chamber is closed to the atmosphere and the left and right chambers of the diaphragm are kept sealed.
The power piston is g...
CLICK HERE TO GET FULL ACCESS TO 1991 Subaru XT BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Subaru XT AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Subaru XT cars and light trucks from 1990+.
SUBARU, ANTI-LOCK BRAKES -> SYSTEM BLEEDING -> 1990-91 MODELS -> 1992 EXCEPT SVX MODELS -> SVX MODELS
Vehicle: 1991 Subaru XT GL 1.8 H4 GAS
1990-91 MODELS
- Bleed air from brake lines of primary side as if you were changing a master cylinder.
- Bleed air from secondary side by replacing cone screw with a bleeder Fig. .
- Depress brake pedal and intermittently apply AV signal to magnet valve. Do not apply signal for more than five seconds.
- Release pedal at end of stroke. Repeat until air disappears, then repeat normal bleeding operations. Bleed air from other secondary circuits following above procedure.
- To produce a AV signal disconnect terminals from battery, then hydraulic connectors 2P and 12P, Refer to Fig. .
- Connect 12P hy...
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