Need Help On Toyota 121

[Bugatti]

Guys,

I need some help regarding a Corolla 121..

Since last evening, a warning light on the dash-board (yellow light next to the brake warning) started flashing (constantly on) even when the engine is running.

I vaguely remember this issue was discussed before on the forum, but can't seem to find the thread..

The shape of the sign is like this "(_)" with 2 arrows facing each other inside the semi circle..

Please help..

Thanks.

[Watchman]

Isnt it something to do with tire preasure being low?

[MADZ]

Isnt it something to do with tire preasure being low?

Yep thats correct...more details can be found here : http://forum.autolanka.com/index.php?showtopic=3654

guys when searching info on AL site try to use Google Search module located in AL front page (just below the “featured vehicle of the day”). It searches much better than the inbuilt search facility which is in the forum.

[Bugatti]

Thanks Guys..!!

[Bugatti]

Yep thats correct...more details can be found here : http://forum.autolanka.com/index.php?showtopic=3654

guys when searching info on AL site try to use Google Search module located in AL front page (just below the “featured vehicle of the day”). It searches much better than the inbuilt search facility which is in the forum.

Hey Madz,

This has taken a different turn..

When consulted Toyot* Lank* They have diagnosed the problem as a defect in the Catalytic Converter.. (some sensor)

Need to verify this...

[The Don]

Hey Madz,

This has taken a different turn..

When consulted Toyot* Lank* They have diagnosed the problem as a defect in the Catalytic Converter.. (some sensor)

Need to verify this...

i think you are referring to the after cat oxygen sensor

the indicator light for that usually looks like a silencer barrel with with lines like lightning strikes (supposed to indicate heat ?) superimposed on top of it !

interesting .......

[prasanga_k]

Useful stuff

Re: Tire Pressure Warning Light

--------------------------------------------------------------------------------

from section 1-6

(k) Low Tire Pressure Warning Light

This light warns that the tire inflation pressure

of any one of the tires is critically

low. The light comes on when the ignition

key is turned to the “ON” position. It goes

off after a few seconds. This indicates

that the low tire pressure warning system

is functioning properly.

If the light comes on while driving, adjust

tire inflation pressure to the specified level.

(See “Tires” on page 286 in Section 8.)

After the tire inflation pressure is adjusted,

push the tire pressure warning system

reset switch for a few seconds and make

sure the warning light goes off. If the light

still remains or blinks once every second,

have the low tire pressure warning system

checked at your Toyota dealer.

If the light blinks once every three seconds,

the low tire pressure warning system

needs to be initialized.

For details, see “Tire pressure warning

system” on page 126 in Section 1- 7.

from section 1-7

Tire pressure warning system

The tire pressure warning system is designed

to provide warning when tire

inflation pressure of any one of the

tires is critically low while the vehicle

is moving. The low tire pressure warning

light comes on to inform you that

such low tire pressure may hamper

driving.

This system is not designed to operate

when the vehicle is stopped. Therefore,

check the tire inflation pressure regularly.

The recommended cold tire inflation pressure,

tire size and the vehicle capacity

weight are on the tire and loading information

label. (For instructions, see “Checking

tire inflation pressure” on page 261 in

Section 7- 2.)

Installed tires should be of the specified

size. They should be of the same size

and construction. If tires other than the

specified size are used, or if tires of different

sizes or constructions are mixed,

the tire pressure warning system will not

function properly.

LOW TIRE PRESSURE WARNING LIGHT

This light comes on when the ignition key

is turned to the “ON” position. It goes off

after a few seconds. This indicates that

the tire pressure warning system is functioning

properly.

If the low tire pressure warning light

comes on or blinks while driving, do

the following.

If the warning light comes on:

1. Adjust the tire inflation pressure to

the specified level as soon as possible.

(See “Tires” on page 286 in

Section 8.)

2. Push the tire pressure warning system

reset switch for a few seconds

and make sure the warning light

goes off.

If the light remains on after the reset

switch has been pushed, have the tire

pressure warning system checked at your

Toyota dealer.

If you have a flat tire, replace it with the

spare tire. For details, see “If you have

a flat tire” on page 219 in Section 4.

If the warning light blinks once every

second:

The low tire pressure warning system may

be malfunctioning. Contact your Toyota

dealer.

If the warning light blinks once every

three seconds:

The low tire pressure warning system

needs to be initialized. Reset the system

with the tire pressure warning system reset

switch. (To reset the system, see

“TIRE PRESSURE WARNING SYSTEM

RESET SWITCH”.)

The tire pressure warning system does

not function properly under certain circumstances.

In the following cases, the

low tire pressure warning light may not

come on even if the tire inflation pressure

is low, or it may come on when

the tire inflation pressure is actually

normal.

A compact spare tire, snow tires, or

tire chains are used.

The tire inflation pressure is excessively

higher than specified, or tire inflation

pressure suddenly drops due to bursting

or other causes.

The vehicle is driven on a slippery

road surface such as rough or frozen

roads.

The vehicle speed is less than 30 km/h

(19 mph) or more than 100 km/h (62

mph), and the driving duration is less

than 5 minutes.

The tires differ in tread pattern or

manufacturer.

The tires are not the specified size.

The tread wear is very different among

the installed tires.

Rapid acceleration/deceleration or

sharp turns is continued.

Towing a trailer.

The loading is over the limit or imbalanced.

Initialization was not performed correctly

after replacing or rotating tires or

wheels.

The outside temperature is below 0C

(32F) or above 40C (104F).

CAUTION

When the tire pressure warning light

comes on, observe the following instructions:

Adjust the tire inflation pressure to

the specified level as soon as possible.

Avoid abrupt steering wheel maneuvering

and braking. If the vehicle

tires deteriorate, you could lose

control of the steering wheel or the

TIRE PRESSURE WARNING SYSTEM

RESET SWITCH

The tire pressure warning system need

to be initialized in the following conditions:

When the low tire pressure warning

light blinks once every three seconds

After replacing or rotating tires or

wheels

When initializing the system, the present

tire condition is stored as a standard.

To initialize the system, perform the following:

1. Park the vehicle at a safe place and

apply the parking brake. Stop the engine.

2. Adjust the pressure of all the installed

tires to the specified level. (See “Tires”

on page 286 in Section 8.)

3. Turn the ignition key to “ON”.

If the low tire pressure warning light

comes on, push the reset switch for a

few seconds and make sure the warning

light goes off.

4. Push and hold the reset switch until

the low tire pressure warning light

blinks three times.

Initialization is completed after driving at

the speeds of 30 km/h (19 mph) or over

for more than one hour. If the following

driving conditions are satisfied, initialization

will be completed in about one hour.

The vehicle speed is between 50 km/h

(31 mph) and 100 km/h (62 mph).

The roads are dry, smooth and straight.

The number of passengers is 1 or 2

(including driver).

When initializing the system, make sure

the low tire pressure warning light blinks

three times. If the warning light does not

blink three times, initializing will be failed

and the tire pressure warning system will

not function properly.

Do not push the reset switch without adjusting

the tire inflation pressure to the

specified level. Otherwise, the low tire

pressure warning light may not come on

even if the tire pressure is low, or it may

come on when the tire inflation pressure

is actually normal.

If you push the reset switch while the

vehicle is moving, initialization is not performed.

If the low tire pressure warning light does

not blink when you push and hold the

reset switch, have the low pressure warning

system checked at your Toyota dealer.

When the warning light blinks once every

three seconds while driving, you may be

unable to reset the system. In this case,

set the system again according to the

above procedure.

brakes, causing death or serious injury.