2009 TOYOTA MATRIX ECU

276 4-2. Maintenance
Vehicle interior
ItemsCheck points
Accelerator pedal• Moves smoothly (without uneven
pedal effort or catching)?
Automatic transmission “Park”
mechanism• Can the vehicle be held securely
on an incline with the shift lever in
P?
Brake pedal• Moves smoothly?
• Does it have appropriate clear-
ance and correct amount of free
play?
Brakes• Not pull to one side when
applied?
• Loss of brake effectiveness?
• Spongy feeling brake pedal?
• Pedal almost touches floor?
Clutch pedal • Moves smoothly?
Head restraints• Move smoothly and lock
securely?
Indicators/buzzers • Function properly?
Lights • Do all the lights come on?
Parking brake• Moves smoothly?
• Can hold the vehicle securely on
an incline?
Seat belts• Does the seat belt system oper-
ate smoothly?
• Are the belts undamaged?
Seats• Do the seat controls operate
properly?
Steering wheel• Moves smoothly?
• Has correct free play?
• No strange noises?

284 4-3. Do-it-yourself maintenance
CAUTION
■Pre-driving check
Check that the hood is fully closed and locked.
If the hood is not locked properly, it may open while the vehicle is in motion
and cause an accident, which may result in death or serious injury.
■After installing the support rod into the slot
Make sure the rod supports the hood securely from falling down on to your
head or body.
NOTICE
■When closing the hood
Be sure to return the support rod to its clip before closing the hood. Closing
the hood with the support rod up could cause the hood to bend.

326 4-3. Do-it-yourself maintenance
Fuse layout and amperage ratings
■Engine compartment
FuseAmpereCircuit
1 CDS FAN 30 A Electric cooling fan(s)
2 RDI FAN 40 A Electric cooling fan(s)
3 ABS NO. 3 30 AAnti-lock brake system, vehicle sta-
bility control system
4 ABS NO. 1 50 AAnti-lock brake system, vehicle sta-
bility control system
5 HTR 50 A Air conditioning system
6 ALT 120 ACharging system, RDI FAN, CDS
FAN, ABS NO. 1, ABS NO. 3,
INVERTER, HTR, HTR SUB NO.
1, HTR SUB NO. 3, ACC, CIG,
METER, IGN, ECU-IG NO. 2, HTR-
IG, WIPER, RR WIPER, WASHER,
ECU-IG NO. 1, AM1, 4WD, DOOR,
STOP, FR DOOR, POWER, RR
DOOR, RL DOOR, OBD, ACC-B,
FR FOG, SUN ROOF, DEF, MIR
HTR, TAIL, PANEL

327 4-3. Do-it-yourself maintenance
4
Maintenance and care
7 EPS 60 A Electric power steering
8 P/I 50 A EFI MAIN, HORN, IG2
9 H-LP MAIN 50 AH-LP LH LO, H-LP RH LO, H-LP
LH HI, H-LP RH HI
10 EFI NO. 2 10 A Emission control system
11 EFI NO. 1 10 AMultiport fuel injection system/
sequential multiport fuel injection
system
12 H-LP RH HI 10 A Right-hand headlight (high beam)
13 H-LP LH HI 10 A Left-hand headlight (high beam)
14 H-LP RH LO 10 ARight-hand headlight (low beam),
front fog lights
15 H-LP LH LO 10 A Left-hand headlight (low beam)
16 ETCS 10 AMultiport fuel injection system/
sequential multiport fuel injection
system
17 TURN-HAZ 10 ATurn signal lights, emergency
flashers
18 ALT-S 7.5 A Charging system
19 AM2 NO. 2 7.5 AStarting system, multiport fuel
injection system/sequential multi-
port fuel injection system
20 AM2 30 AStarting system, multiport fuel
injection system/sequential multi-
port fuel injection system
21 STRG LOCK 20 A No circuit
22 IG2 NO.2 7.5 A Starting system
23 ECU-B2 10 A Engine immobilizer system
FuseAmpereCircuit

328 4-3. Do-it-yourself maintenance
24 ECU-B 10 AMain body ECU, gauge and
meters, daytime running light sys-
tem, air conditioning system, wire-
less remote control
25 RAD NO. 1 15 A Audio system
26 DOME 10 A Interior lights, personal light, clock
27 SPARE 10 A Spare fuse
28 SPARE 30 A Spare fuse
29 SPARE 20 A Spare fuse
30 AMP 30 A Audio system
31 MAYDAY 10 A No circuit
32 EFI MAIN 20 AMultiport fuel injection system/
sequential multiport fuel injection
system, EFI NO. 1, EFI NO. 2
33 HORN 10 A Horn
34 IG2 15 AMultiport fuel injection system/
sequential multiport fuel injection
system, starting system, IGN,
METER
35HTR SUB
NO. 130 A PTC heater
36HTR SUB
NO. 330 A PTC heater
37PWR OUTLET/
INVERTER15 A AC INVERTER
FuseAmpereCircuit

329 4-3. Do-it-yourself maintenance
4
Maintenance and care
■Under the driver’s side instrument panel
FuseAmpereCircuit
1 TAIL 10 AParking lights, tail lights, license
plate lights, multiport fuel injection
system/sequential multiport fuel
injection system, instrument cluster
lights
2 PANEL 7.5 A Switch illumination
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 Moon roof
7 CIG 15 A Cigarette lighter, power outlet
8 ACC 7.5 AOutside rear view mirrors, audio
system, main body ECU, clock,
shift lock control system
9 I/P 7.5 A No circuit
10 PWR OUTLET 15 A No circuit
11 I G N 7 . 5 ASRS airbag system, multiport fuel
injection system/sequential multi-
port fuel injection system, front
passenger occupant classification
system
12 METER 7.5 A Gauge and meters

330 4-3. Do-it-yourself maintenance
13 HTR-IG 10 AAir conditioning system, rear win-
dow defogger
14 WIPER 25 A Windshield wipers
15 RR WIPER 15 A Rear window wiper
16 WASHER 15 A Windshield washer
17 ECU-IG NO. 1 10 AMain body ECU, electric power
steering, electric cooling fan(s),
shift lock control system, anti-lock
brake system, multiport fuel injec-
tion system/sequential multiport
fuel injection system, tire pressure
warning system, vehicle stability
control system
18 ECU-IG NO. 2 10 ABack-up lights, charging system,
rear window defogger
19 OBD 7.5 A On-board diagnosis system
20 STOP 10 AStop lights, high mounted stop-
light, anti-lock brake system, vehi-
cle stability control system,
multiport fuel injection system/
sequential multiport fuel injection
system, shift lock control system
21 DOOR 25 A Power door lock system
22 ACC-B 25 A CIG, ACC
23 4WD 7.5 A All wheel drive system
24 FR FOG 15 A Front fog lights
25 AM1 7.5 AStarting system, shift lock control
system, ACC, CIG
26 DEF 30 ARear window defogger, MIR HTR,
multiport fuel injection system/
sequential multiport fuel injection
system
27 POWER 30 A Power windows
FuseAmpereCircuit

340 4-3. Do-it-yourself maintenance
■Condensation build-up on the inside of the lens
Contact your Toyota dealer for more information in the following situations.
Temporary condensation build-up on the inside of the headlight lens does
not indicate a malfunction.
●Large drops of water are built up on the inside of the lens.
●Water has built up inside the headlight.
CAUTION
■Replacing light bulbs
●Turn off the headlights. Do not attempt to replace the bulb immediately
after turning off the headlights.
The bulbs become very hot and may cause burns.
●Do not touch the glass portion of the light bulb with bare hands. Hold the
bulb by the plastic or metal portion.
If the bulb is scratched or dropped it may blow out or crack.
●Fully install light bulbs and any parts used to secure them. Failing to do so
may result in heat damage, fire, or water entering the headlight unit. This
may damage the headlights or cause condensation to build up on the lens.
■To prevent damage or fire
Make sure bulbs are fully seated and locked.