ECU TOYOTA 4RUNNER 1999 Owner's Guide

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Tire surface and wheel nuts
Check the tires carefully for cuts, damage
or excessive wear. See Chapter 7- 2 for
additional information. 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 every 12000 km (7500
miles). See Chapter 7- 2 for additional in-
formation.
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.
Doors and engine hood
Check that all doors including back door
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.
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
Check that it has the specified freeplay.
Be alert for changes in steering condition,
such as hard steering or strange noise.
Seats
Check that all seat controls such as seat
adjusters, seatback recliner, etc. operate
smoothly and that all latches lock securely
in any position. Check that the head re-
straint move up and down smoothly and
that the locks hold securely in any latched
position. For folding- down rear seatbacks,
swing- up rear seat cushions and detach-
able temporary third seat, 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 the belt
webbing is not cut, frayed, worn or dam-aged.
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
At 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.

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226
Automatic transmission ºParkº 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 ºPº position and all brakes re-
leased.
IN THE ENGINE COMPARTMENT
Items listed below should be checked
from time to time, e.g. each time when
refueling.
Washer fluid
Make sure there is sufficient fluid in the
tank. See Chapter 7- 3 for additional in-
formation.
Engine coolant level
Make sure the coolant level is between
the ºFULLº and ºLOWº lines on the
see- through reservoir when the engine is
cold. See Chapter 7- 2 for additional in-
formation.
Battery electrolyte level
Make sure the electrolyte level of all bat-
tery cells is between upper and lower lev-
el lines on the case. Add only distilled
water when replenishing. See Chapter 7- 3
for additional information.
Brake fluid level
Make sure the brake fluid level is correct.
See Chapter 7- 2 for additional information.
Engine oil level
Check the level on the dipstick with the
engine turned off and the vehicle parked
on a level spot. See Chapter 7- 2 for addi-
tional information.
Power steering fluid level
Check the level through the reservoir. The
level should be in the ºHOTº or ºCOLDº
range depending on the fluid temperature.
See Chapter 7- 2 for additional information.
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 in
Part 2.)
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
Does your vehicle need
repairing?

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17. HEAD (HI LH) 10 A:
Left- hand head-
light (high beam)
18. HEAD (LO RH) 10 A: Right- hand
headlight (low beam)
19. HEAD (LO LH) 10 A: Left- hand head-
light (low beam)
20. ECU- IG 10 A: Cruise control system,
anti- lock brake system, electronically
controlled automatic transmission sys-
tem, power antenna, power window,
electric moon roof, power back window,
back window defogger, back window
wiper
21. TURN 10 A: Turn signals lights, emer-
gency flashers
22. WIPER 20 A: Windshield wipers and
washer, power door lock control sys-
tem, back window defogger, horns,
theft deterrent system
23. 4WD 20 A: A.D.D. control system,
four- wheel drive control system, rear
differential lock system
24. ACC 15 A: Car audio system, power
antenna, clock, power rear view mirror
control, cigarette lighter, SRS airbag
system, seat belt pretensi oners, elec-
tronically controlled automatic transmis-
sion system, power outlets, theft deter-
rent system 25. GAUGE 10 A:
Gauges and meters,
back window defogger, daytime running
light system, air conditioning system,
cruise control system, rear differential
lock system, electronically controlled
automatic transmission, back- up lights
26. IGN 10 A: SRS airbag system, seat
belt pretensioners, multiport fuel injec-
tion system/sequential multiport fuel in-
jection system, discharge warning light
27. ECU- B 7.5 A: Gauges and meters,
SRS airbag system, seat belt preten-
sioners
28. HORN,HAZ 15 A: Horns, emergency
flashers
29. STA 7.5 A: Starting system
30. STOP 10 A: Stop lights, high- mounted
stoplight
Fuses (type B)
31. HEATER 50 A: Air conditioning system,
all components in ºA.Cº fuse
32. AM1 40 A: Starting system, all compo-
nents in ºACCº, ºGAUGEº, ºTURNº,
ºECU- IGº, ºWIPERº, º4WDº fuses
33. J/B 50 A: All components in ºPOWERº,
ºHORN,HAZº, ºSTOPº, ºECU- Bº fuses 34. AM2 30 A:
Starting system, multiport
fuel injection system/sequential multi-
port fuel injection system, all compo-
nents in ºSTAº, ºIGNº fuses
35. POWER 30 A: Power window, power
back window, electric moon roof, power
seat, back door lock
Fuses (type C)
36. ABS 60 A: Anti- lock brake system
37. ALT 120 A: Charging system, all com-
ponents in ºAM1º, ºHEATERº, ºTAILº,
ºRR HTRº, ºALT- Sº, ºDEFOGº, ºMIR
HTRº and ºACCº fuses