Page 2577 of 5135

320GN±02
BR2238
GOOD NO GOOD
2nd3rd
1st
BR2237
G24221
Ventilation No Ventilation
± BRAKEBRAKE BOOSTER ASSY (RHD)
32±21
AVENSIS REPAIR MANUAL (RM1018E)
BRAKE BOOSTER ASSY (RHD)
ON±VEHICLE INSPECTION
1. INSPECT BRAKE BOOSTER
(a) Airtightness check.
(1) Start the engine and stop it after 1 or 2 minutes. De-
press the brake pedal several times slowly.
HINT:
If the pedal can be depressed to the f;oor the first time, but on
the 2nd or 3rd time cannot be depreesed as far, the booster is
airtight.
(2) Depress the brake pedal while the engine is run-
ning, and stop the engine with the pedal depressed.
HINT:
If there is no change in the pedal reserve distance after holding
the pedal for 30 seconds, the booster is airtight.
(b) Operating check.
(1) Depress the brake pedal several times with the igni-
tion switch off and check that there is no change in
the pedal reserve distance.
(2) Depress the brake pedal and start the engine.
HINT:
If the pedal goes down slightly, operation is normal.
2. INSPECT VACUUM CHECK VALVE
(a) Inspect vacuum check valve.
(1) Slide the clip and disconnect the vacuum hose.
(2) Remove the vacuum check valve.
(3) Check that there is ventilation from the booster to
the engine, and no ventilation from the engine to the
booster.
(4) If any fault is found, replace the vacuum check
valve.
Page 2578 of 5135

320W7±01
F40019
F42620
±
BRAKE BRAKE BOOSTER ASSY (LHD)
32±19
AVENSIS REPAIR MANUAL (RM1018E)
REPLACEMENT
NOTICE:
Do not adjust the brake booster push rod.
1. DRAIN BRAKE FLUID
NOTICE:
Wash the brake fluid off immediately if it adheres to any painted surface\
.
2. REMOVE AIR CLEANER ASSEMBLY WITH HOSE
3. SEPARATE ENGINE ROOM RELAY BLOCK
4. REMOVE CHARCOAL CANISTER ASSY (GASOLINE ENGINE TYPE)
5.REMOVE FUEL FILTER ASSY (DIESEL ENGINE TYPE) (See page 11±82)
6.REMOVE BRAKE MASTER CYLINDER SUB±ASSY (See page 32±13)
(a) w/o VSC:
SST 09023±00100
(b) w/ VSC: SST 09023±38400
7.REMOVE HEATER ASSY (W/ COLD AREA) (See page 55±100)
8. REMOVE FRONT WHEEL LH
9. DISCONNECT FRONT BRAKE TUBE NO.5
(a) Using SST and spanner, disconnect the brake line fromthe flexible hose of the front brake LH.
SST 09023±00100
10. REMOVE BRAKE BOOSTER ASSY
(a) Disconnect the vacuum hose from the brake booster assy.
(b) Remove the clip and clevis pin.
(c) Remove the 4 nuts.
(d) Pull out the brake booster assy.
11. REMOVE BRAKE BOOSTER GASKET
(a) Pull out the brake booster gasket from the brake booster assy.
12. REMOVE CHECK VALVE
(a) Remove the check valve and grommet from the brake booster assy.
13. INSTALL CHECK VALVE
(a) Install the check valve and grommet to the brake booster assy.
14. INSTALL BRAKE BOOSTER GASKET
(a) Install a new brake booster gasket to the brake booster assy.
Page 2579 of 5135

F42620
F40019
32±20
±
BRAKE BRAKE BOOSTER ASSY (LHD)
AVENSIS REPAIR MANUAL (RM1018E)
15. INSTALL BRAKE BOOSTER ASSY
(a) Install the brake booster assy with the 4 nuts. Torque: 13 N m (130 kgf cm, 9 ft lbf)
(b) Install the clevis pin and clip to the brake master cylinder clevis.
(c) Connect the vacuum hose to the brake booster assy.
16. CONNECT FRONT BRAKE TUBE NO.5
(a) Using SST and spanner, connect the brake tube to the flexible hose.
SST 09023±00100
Torque: 15 N m (155 kgf cm, 11 ft lbf)
17. INSTALL FRONT WHEEL LH Torque: 103 N m (1,050 kgf cm, 76 ft lbf)
18.INSTALL HEATER ASSY (W/ COLD AREA) (See page 55±100)
19.INSTALL BRAKE MASTER CYLINDER SUB±ASSY (See page 32±13)
(a) w/o VSC: SST 09023±00100
(b) w/ VSC: SST 09023±38400
20. INSTALL CHARCOAL CANISTER ASSY (GASOLINE ENGINE TYPE)
21.INSTALL FUEL FILTER ASSY (DIESEL ENGINE TYPE) (See page 11±82)
22. CONNECT ENGINE ROOM RELAY BLOCK
23. INSTALL AIR CLEANER ASSEMBLY WITH HOSE
24.FILL RESERVOIR WITH BRAKE FLUID (See page 32±4)
25.BLEED MASTER CYLINDER (See page 32±4)
(a) w/o VSC:
SST 09023±00100
(b) w/ VSC: SST 09023±38400
26.BLEED BRAKE LINE (See page 32±4)
27.BLEED CLUTCH PIPE LINE (M/T TRANSAXLE) (See page 42±13)
28.CHECK AND ADJUST BRAKE PEDAL HEIGHT (See page 32±6)
29.CHECK PEDAL FREE PLAY (See page 32±6)
30.CHECK PEDAL RESERVE DISTANCE (See page 32±6)
31. CHECK FUEL LEAK
32.CHECK FLUID LEVEL IN RESERVOIR (See page 32±4)
33. CHECK BRAKE FLUID LEAKAGE
Page 2580 of 5135
320VU±01
F45162
Vacuum Hose
ClipBrake Vacuum
Check Valve
Check Valve
Grommet
Clevis Pin
Clip Wave Washer
13 (130, 9)
Engine Room Relay Block Way
Clutch Reservoir Tube M/T Transaxle:
Front Brake
Tube No.5
15 (155, 11) *1
29 (296, 21) *2
Brake Fluid Level
Switch Connector
Brake Booster Gasket
20 (204, 15)
20 (204, 15)
Brake Master
Cylinder Sub±assy
Brake Booster Assy
Brake Master
Cylinder clevis
15 (155, 11)
Fuel Filter Assy Diesel Engine Type: Heater Assy w/ Cold Area:
Air Cleaner Assembly
With Hose
Clutch Tube M/T Transaxle:Gasoline Engine Type:
15 (155, 11)
*1
w/ ABS:
*2
w/ VSC:Nm (kgfcm, ftlbf) : Specified torque
5.4 (55, 48 in.lbf)
Charcoal Canister
Assy
32±18
± BRAKEBRAKE BOOSTER ASSY (LHD)
AVENSIS REPAIR MANUAL (RM1018E)
COMPONENTS
Page 2581 of 5135

3201G±07
BR2238
GOOD NO GOOD
2nd3rd
1st
BR2237
G24221
Ventilation No Ventilation
± BRAKEBRAKE BOOSTER ASSY (LHD)
32±17
AVENSIS REPAIR MANUAL (RM1018E)
BRAKE BOOSTER ASSY (LHD)
ON±VEHICLE INSPECTION
1. INSPECT BRAKE BOOSTER
(a) Airtightness check.
(1) Start the engine and stop it after 1 or 2 minutes. De-
press the brake pedal several times slowly.
HINT:
If the pedal can be depressed to the f;oor the first time, but on
the 2nd or 3rd time cannot be depreesed as far, the booster is
airtight.
(2) Depress the brake pedal while the engine is run-
ning, and stop the engine with the pedal depressed.
HINT:
If there is no change in the pedal reserve distance after holding
the pedal for 30 seconds, the booster is airtight.
(b) Operating check.
(1) Depress the brake pedal several times with the igni-
tion switch off and check that there is no change in
the pedal reserve distance.
(2) Depress the brake pedal and start the engine.
HINT:
If the pedal goes down slightly, operation is normal.
2. INSPECT VACUUM CHECK VALVE
(a) Inspect vacuum check valve.
(1) Slide the clip and disconnect the vacuum hose.
(2) Remove the vacuum check valve.
(3) Check that there is ventilation from the booster to
the engine, and no ventilation from the engine to the
booster.
(4) If any fault is found, replace the vacuum check
valve.
Page 2582 of 5135

320W6±01
G24218
G24217
F45393
± BRAKEBRAKE MASTER CYLINDER SUB±ASSY
32±13
AVENSIS REPAIR MANUAL (RM1018E)
REPLACEMENT
NOTICE:
Do not adjust the brake booster push rod.
1. DRAIN BRAKE FLUID
NOTICE:
Wash the brake fluid off immediately if it adheres to any painted surface.
2. REMOVE ENGINE ROOM RELAY BLOCK (LHD STEERING POSITION TYPE)
3. REMOVE AIR CLEANER CAP SUB±ASSY (LHD STEERING POSITION TYPE)
4. REMOVE CHARCOAL CANISTER ASSY (LHD STEERING POSITION TYPE)
5. REMOVE FUEL FILTER ASSY (LHD STEERING POSITION TYPE)
(a) Diesal engine type:
Remove the fuel filter assy with the 3 bolts.
6. REMOVE BRAKE MASTER CYLINDER SUB±ASSY
(LHD STEERING POSITION TYPE)
(a) Disconnect the brake fluid level switch connector.
(b) M/T transaxle:
Slide the clip and disconnect the clutch reservoir tube.
(c) w/o VSC:
Using SST, disconnect the 2 brake lines from the brake
master cylinder sub±assy.
SST 09023±00100
(d) w/ VSC:
Using SST, disconnect the 2 brake lines from the brake
master cylinder sub±assy.
SST 09023±38400
(e) Using SST, disconnect the 2 brake lines from the way.
SST 09023±00100
(f) Remove the 2 nuts, and pull out the way and brake master
cylinder sub±assy.
(g) Remove the O±ring from the brake master cylinder sub±
assy.
Page 2583 of 5135

G24225
F45394
F45395Lithium soap base glycol grease
Grommets
Retainer
Washer
32±14
± BRAKEBRAKE MASTER CYLINDER SUB±ASSY
AVENSIS REPAIR MANUAL (RM1018E)
7. REMOVE BRAKE MASTER CYLINDER SUB±ASSY
(RHD STEERING POSITION TYPE)
(a) Disconnect the brake fluid level switch connector.
(b) M/T transaxle:
Slide the clip and disconnect the clutch reservoir tube.
(c) w/o VSC:
Using SST, disconnect the 2 brake lines from the brake
master cylinder sub±assy.
SST 09023±00100
(d) w/ VSC:
Using SST, disconnect the 2 brake lines from the brake
master cylinder sub±assy.
SST 09023±38400
(e) Remove the 2 nuts and pull out the accelerator control
cable support and brake master cylinder sub±assy.
(f) Remove the O±ring from the brake master cylinder sub±
assy.
8. REMOVE BRAKE MASTER CYLINDER RESERVOIR SUB±ASSY
(a) Using a screwdriver, remove the screw from the brake master cylinder.
(b) Remove the brake master cylinder reservoir sub±assy and 2 brake master cylinder reservoir grommets
from the brake master cylinder.
(c) Remove the cap and strainer from the master cylinder reservoir.
9. INSTALL BRAKE MASTER CYLINDER RESERVOIR
SUB±ASSY
(a) Apply lithium soap base grycol grease to the 2 brake mas-
ter cylinder reservoir grommets.
(b) Install the retainer washer to the brake master cylinder.
(c) Install the 2 brake master cylinder reservoir grommets to
the brake master cylinder.
(d) Using a screwdriver, install the brake master cylinder re-
sevoir sub±assy with the screw.
Page 2584 of 5135

F45393
G24217
G24218
F45394
± BRAKEBRAKE MASTER CYLINDER SUB±ASSY
32±15
AVENSIS REPAIR MANUAL (RM1018E)
10. INSTALL BRAKE MASTER CYLINDER SUB±ASSY
(LHD STEERING POSITION TYPE)
(a) Install the new O±ring from the brake master cylinder
sub±assy.
(b) Install the brake master cylinder sub±assy and way
bracket with the 2 nuts.
Torque: 20 Nm (204 kgfcm, 15 ftlbf)
(c) Using SST, connect the 2 brake lines to the way.
SST 09023±00100
Torque: 15 Nm (155 kgfcm, 11 ftlbf)
(d) w/o VSC:
Using SST, connect the 2 brake lines to the brake master
cylinder sub±assy.
SST 09023±00100
Torque: 15 Nm (155 kgfcm, 11 ftlbf)
(e) w/ VSC:
Using SST, connect the 2 brake lines to the brake master
cylinder sub±assy.
SST 09023±38400
Torque: 29 Nm (296 kgfcm, 21 ftlbf)
(f) M/T transaxle:
Slide the clip and connect the clutch reservoir tube.
(g) Connect the brake fluid level switch connector.
11. INSTALL BRAKE MASTER CYLINDER SUB±ASSY
(RHD STEERING POSITION TYPE)
(a) Install the new O±ring from the brake master cylinder
sub±assy.
(b) Install the brake master cylinder sub±assy and accelera-
tor control cable support with the 2 nuts.
Torque: 20 Nm (204 kgfcm, 15 ftlbf)