Page 262 of 392
262 4-3. Do-it-yourself maintenance
Scion_xB_OM_OM12F03U_(U)
9 H-LP MAIN 50 AH-LP LH LO, H-LP RH LO, H-LP
LH HI, H-LP RH HI
10 ECU-B2 10 A Air conditioning system
11 ECU-B 10 A Gauges and meters, body ECU,
vehicle stability control system
12 RAD NO.1 15 A Audio system
13 DOME 10 A Interior light, personal light, lug-
gage compartment light, wireless
remote control system
14 AM2 NO.2 7.5 A No circuit
15 ALT-S 7.5 A Charging system
16 TURN-HAZ 10 A Turn signal lights, emergency
flashers
17 ETCS 10 AMultiport fuel injection system/
sequential multiport fuel injection
system
18 AM2 30 AMultiport fuel injection system/
sequential multiport fuel injection
system, starting system
19 STRG LOCK 20 A No circuit
20 SPARE Spare fuse
21 SPARE Spare fuse
22 SPARE Spare fuse
23 EFI MAIN 20 AMultiport fuel injection system/
sequential multiport fuel injection
system, EFI NO.1, EFI NO.2
24 HORN 10 A Horn
FuseAmpereCircuit
Page 263 of 392
263
4-3. Do-it-yourself maintenance
4
Maintenance and care
Scion_xB_OM_OM12F03U_(U)
25 IG2
15 AIGN, METER, IG2 NO.2
26 IG2 NO.27.5 A Starting system
27 EFI NO.2 10 AAir conditioning system, rear O2
sensor, front air flow sensor
28 EFI NO.1 10 AMultiport fuel injection system/
sequential multiport fuel injection
system, air flow meter
29 H-LP RH HI 10 A Right hand headlight (high beam)
30 H-LP LH HI 10 A Left hand headlight (high beam)
31 H-LP RH LO 15 A Right hand headlight (low beam)
32 H-LP LH LO 15 A Left hand headlight (low beam)
FuseAmpereCircuit
Page 264 of 392
264 4-3. Do-it-yourself maintenance
Scion_xB_OM_OM12F03U_(U)
■Under the driver’s side instrument panel
FuseAmpereCircuit
1 TAIL 10 A Parking lights, tail lights, side
marker lights, gauges and meters,
license plate lights, multiport fuel
injection system/ sequential multi-
port fuel injection system
2 PANEL 7.5 A Instrument cluster lights, instru-
ment panel lights, gauges and
meters
3 FR DOOR 20 A Power windows
4 RL DOOR 20 A Power windows
5 RR DOOR 20 A Power windows
6 SUNROOF 20 A No circuit
7 CIG 15 A Cigarette lighter
8 ACC 7.5 AOutside rear view mirror switch,
shift lock control system, audio sys-
tem, body ECU
Page 265 of 392

265
4-3. Do-it-yourself maintenance
4
Maintenance and care
Scion_xB_OM_OM12F03U_(U)
9 MIR HTR
10 AMultiport fuel injection system/
sequential multiport fuel injection
system, outside rear view mirror
defoggers
10 IGN 7.5 AMultiport fuel injection system/
sequential multiport fuel injection
system, SRS airbag system, steer-
ing lock system
11 METER 7.5 A Gauges and meters
12 HTR-IG 10 A Air conditioning system
13 WIPER 25 A Windshield wipers
14 RR WIPER 15 A Rear window wiper
15 WASHER 15 A Washer
16 ECU-IG NO.1 10 A Multiport fuel injection system/
sequential multiport fuel injection
system, electric power steering,
electric cooling fan, anti-lock brake
system, vehicle stability control
system, shift lock control system,
audio system, body ECU
17 ECU-IG NO.2 10 A Back-up light, emergency flasher,
air conditioning system, rear win-
dow defogger, charging system,
multiport fuel injection system/
sequential multiport fuel injection
system, front passenger’s seat belt
reminder light
FuseAmpereCircuit
Page 266 of 392
266 4-3. Do-it-yourself maintenance
Scion_xB_OM_OM12F03U_(U)
■Driver’s side instrument panel
18 OBD 7.5 A On-board diagnosis system
19 STOP 10 AStop lights, high mounted stop-
light, multiport fuel injection sys-
tem/ sequential multiport fuel
injection system, anti-lock brake
assist system, body ECU
20 DOOR 25 A Power door lock system, body ECU
21 ACC-B 25 A CIG, ACC
22 FR FOG 15 A No circuit
23 AM1 7.5 AStarting system, shift lock control
system
FuseAmpereCircuit
1 POWER 30 A Power windows
2 DEF 30 A Rear window defogger, MIR HTR
3 PWR SEAT 30 A No circuit
FuseAmpereCircuit
Page 279 of 392
When trouble arises5
279
Scion_xB_OM_OM12F03U_(U)
5-1. Essential informationEmergency flashers ......... 280
If your vehicle needs to be towed .................... 281
If you think something is wrong ............................. 287
Fuel pump shut off system ........................... 288 5-2. Steps to take
in an emergency
If a warning light turns on or a warning
buzzer sounds... ............ 289
If you have a flat tire......... 302
If the engine will not start ................................ 316
If the shift lever cannot be shifted from P (automatic
transmission) ................. 317
If you lose your keys ........ 318
If the vehicle battery is discharged ..................... 319
If your vehicle overheats ....................... 323
If the vehicle becomes stuck .............................. 326
If your vehicle has to be stopped
in an emergency ............ 328
Page 288 of 392
288
5-1. Essential information
Scion_xB_OM_OM12F03U_(U)
Fuel pump shut off system
Follow the procedure below to restart the engine after the system is
activated.
Turn the engine switch to the “ACC” or “LOCK” position.
Restart the engine.
NOTICE
■Before starting the engine
Inspect the ground under the vehicle.
If you find that fuel has leaked onto the ground, the fuel system has been
damaged and is in need of repair. Do not restart the engine.
To minimize the risk of fuel leakag e when the engine stalls or when
an airbag inflates upon collision , the fuel pump shut off system
stops the supply of fuel to the engine.
STEP 1
STEP 2
Page 293 of 392
5
When trouble arises
293
5-2. Steps to take in an emergency
Scion_xB_OM_OM12F03U_(U)
Follow the correction procedures.
After taking the specified steps to correct the suspected problem,
check that the warning light goes off.
Warning lightWarning light/DetailsCorrection procedure
Open door warning light Indicates that a door is not
fully closed. Check that all the doors are
closed.
Low fuel level warning
light Indicates remaining fuel is
approximately 2.1 gal.
(8.0 L, 1.7 lmp. gal.) or
less. Refuel the vehicle.
Driver’s seat belt
reminder light
(warning buzzer)
*1
Warns the driver to fasten
his/her seat belt. Fasten the seat belt.
Front passenger’s seat
belt reminder light
(warning buzzer)
*2
Warns the front passen-
ger to fasten his or her
seat belt. Fasten the seat belt.
(Canada) Low windshield washer
fluid warning light
Low level of washer fluid Fill the tank.