2005 TOYOTA COROLLA ECU

’05 Corolla_U (L/O 0409)
244
2005 COROLLA from Sep. ’04 Prod. (OM12891U)
Exhaust system
If you notice any change in the sound of
the exhaust or smell exhaust fumes, have
the cause located and corrected immedi-
ately. (See “Engine exhaust cautions” on
page 178 in Section 2.)
INSIDE THE VEHICLE
Items listed below should be checked
regularly, e.g. while performing periodic
services, cleaning the vehicle, etc.
Lights
Make sure the headlights, stop lights, tail
lights, turn signal lights, and other lights
are all working. Check headlight aim.
Service reminder indicators and warning
buzzers
Check that all service reminder indicators
and warning buzzers function properly.
Steering wheel
Be alert for changes in steering condition,
such as hard steering or strange noise.Seats
Check that all front seat controls such as
seat adjusters, seatback recliner, etc. op-
erate smoothly and that all latches lock
securely in any position. Check that the
head restraints move up and down
smoothly and that the locks hold securely
in any latched position. For folding
−down
rear seatbacks, check that the latches
lock securely.
Seat belts
Check that the seat belt system such as
buckles, retractors and anchors operate
properly and smoothly. Make sure that the
belt webbings are not cut, frayed, worn or
damaged.
Accelerator pedal
Check the pedal for smooth operation and
uneven pedal effort or catching.
Clutch pedal
Check the pedal for smooth operation.
Brake pedal
Check the pedal for smooth operation and
that the pedal has the proper clearance.
Check the brake booster function.
Brakes
In a safe place, check that the brakes do
not pull to one side when applied. Parking brake
Check that the lever has the proper travel
and that, on a safe incline, your vehicle
is held securely with only the parking
brake applied.
Automatic transmission “Park” mecha-
nism
Check the lock release button of the se-
lector lever for proper and smooth opera-
tion. On a safe incline, check that your
vehicle is held securely with the selector
lever in “P” position and all brakes re-
leased.
OUTSIDE THE VEHICLE
Items listed below should be performed
from time to time, unless otherwise
specified.
Fluid leaks
Check underneath for leaking fuel, oil, wa-
ter or other fluid after the vehicle has
been parked for a while. If you smell fuel
fumes or notice any leak, have the cause
found and corrected immediately.

’05 Corolla_U (L/O 0409)
245
2005 COROLLA from Sep. ’04 Prod. (OM12891U)
Doors and engine hood
Check that all doors including trunk lid
operate smoothly and all latches lock se-
curely. Make sure the engine hood sec-
ondary latch secures the hood from open-
ing when the primary latch is released.
Tire inflation pressure
Check the pressure with a gauge ev-
ery two weeks, or at least once a
month. See page 261 in Section 7−2
for additional information.
Tire surface and wheel nuts
Check the tires carefully for cuts,
damage or excessive wear. See page
264 in Section 7− 2 for additional in-
formation. When checking the tires,
make sure no nuts are missing, and
check the nuts for looseness. Tighten
them if necessary.
Tire rotation
Rotate the tires according to the
maintenance schedule. (For sched-
uled maintenance information, please
refer to the “Scheduled Maintenance
Guide” or “Owner ’s Manual Supple-
ment”.) See page 266 in Section 7 −2
for additional information.
Be on the alert for changes in perfor-
mance, sounds, and visual tip −offs that
indicate service is needed. Some impor-
tant clues are as follows:
Engine missing, stumbling, or pinging
Appreciable loss of power
Strange engine noises
A leak under the vehicle (however, wa-
ter dripping from the air conditioning
after use is normal.)
Change in exhaust sound (This may
indicate a dangerous carbon monoxide
leak. Drive with the windows open and
have the exhaust system checked im-
mediately.)
Flat −looking tire; excessive tire squeal
when cornering; uneven tire wear
Vehicle pulls to one side when driving
straight on a level road
Strange noises related to suspension
movement
Loss of brake effectiveness; spongy
feeling brake or clutch pedal; pedal al-
most touches floor; vehicle pulls to one
side when braking
Engine coolant temperature continually
higher than normal If you notice any of these clues, take your
vehicle to your Toyota dealer as soon as
possible. It probably needs adjustment or
repair.
CAUTION
Do not continue driving with the ve-
hicle unchecked. It could result in se-
rious vehicle damage and possibly
personal injury.
Does your vehicle need
repairing?

’05 Corolla_U (L/O 0409)
287
2005 COROLLA from Sep. ’04 Prod. (OM12891U)
Instrument panel
Fuses (type A)1. FOG 15 A: Front fog lights
2. HEAD LH UPR 10 A: Left−hand head-
light (high beam)
3. HEAD RH UPR 10 A: Right−hand
headlight (high beam), high beam indi-
cator light
4. SPARE 30 A: Spare fuse
5. SPARE 15 A: Spare fuse
6. SPARE 10 A: Spare fuse
7. ETCS 10 A (1ZZFE engine): Electron-
ic throttle control system
8. AMP 30 A: Car audio system 9. MAIN 30 A:
Starting system, “AM2”
fuse
10. DOME 15 A: Car audio system, clock,
personal lights, interior light, trunk light,
open door warning light, wireless re-
mote control system
11. HORN 10 A: Horn
12. HAZARD 10 A: Emergency flashers ,
turn signal lights
13. EFI 20 A (1ZZFE engine) or EFI 15 A (2ZZGE engine): Multiport fuel in-
jection system/sequential multiport fuel
injection system, emission control sys-
tem, “EFI2” fuse
14. ALTS 5 A: Charging system
15. HEAD LH LWR 10 A: Left−hand head-
light (low beam)
16. HEAD RH LWR 10 A: Right−hand
headlight (low beam)
17. EFI2 15 A (1ZZFE engine): Multiport
fuel injection system/ sequential multi-
port fuel injection system, emission
control system
18. TAIL 15 A: Tail lights, license plate
lights, instrument panel lights , instru-
ment cluster lights
19. OBD 7.5 A: On−board diagnosis sys-
tem 20. P/W 30 A:
No circuit
21. WIPER 25 A: Windshield wipers
22. AM2 15 A: Charging system, multiport
fuel injection system/sequential multi-
port fuel injection system, starting sys-
tem, SRS airbag system
23. STOP 15 A: Stop lights, high mounted
stoplight, anti −lock brake system, shift
lock control system, multiport fuel in-
jection system/sequential multiport fuel
injection system, cruise control system
24. DOOR 25 A: Power door lock system
25. AM1 25 A: “CIG” fuse
26. ECUIG 10 A: Electric cooling fan,
anti −lock brake system, vehicle stability
control system, traction control system,
brake assist system, shift lock control
system, cruise control system
27. RR WIPER 15 A: No circuit
28. A/C 10 A: Air conditioning system
2

9. INV 15 A: No circuit
30. P/POINT 15 A: Power outlet (in the
rear console box)
31. ECUB 10 A: Daytime running light
system

’05 Corolla_U (L/O 0409)
288
2005 COROLLA from Sep. ’04 Prod. (OM12891U)
32. CIG 15 A: Power outlet (on the instru-
ment panel) or cigarette lighter, car au-
dio system, clock, power rear view mir-
ror control, shift lock control system
33. GAUGE 10 A: Gauges and meters, air
conditioning system, daytime running
light system, charging system, auto
anti −glare inside rear view mirror, pow-
er windows, cruise control system, rear
window defogger, back −up lights, front
passenger ’s seat belt reminder light
34. WASHER 15 A: Windshield washer
35. MHTR/DEF IUP 10 A: Engine control
system
Fuses (type B)
36. ABS NO.1 30 A: Anti−lock brake sys-
tem, vehicle stability control system,
traction control system, brake assist
system
37. RDI FAN 30 A: Electric cooling fan
38. ABS NO.2 40 A (without vehicle sta- bility control system): Anti−lock brake
system
ABS NO.2 50 A (with vehicle stability
control system): Anti−lock brake sys-
tem, vehicle stability control system,
traction control system, brake assist
system 39. HEAD MAIN 40 A:
“HEAD LH UPR”,
“HEAD RH UPR”, “HEAD LH LWR” and
“HEAD RH LWR” fuses
40. AIR PUMP 50 A (2ZZGE engine): Emission control system
41. HTR 40 A: Air conditioning system
42. DEF 40 A: Rear window defogger,
“M −HTR/DEF I −UP” fuse
43. POWER 30 A: Power windows, electric
moon roof
Fuse (type C)
44. ALT 100 A: Charging system, “ABS
NO.1”, “ABS NO.2”, “RDI FAN”, “FOG”,
“HTR”, “AM1”, “POWER”, “DOOR”,
“ECU −B”, “TAIL”, “STOP”, “P/POINT”,
“INV” and “OBD” fuses