cefiro engine warning light blinks

[marvs]

mga sir pa help naman po.
Yung 1998 nissan cefiro namin nagbliblink yung orange light that says "check" sa dashboard pagnakalagay sa on yung susi tpos pagstart mo hindi tumutloy umandar yung makina parang alang umaakyat na gas sa makina pero sabi ng mekaniko malakas naman daw yung buga ng gasolina, kahit sagad na tapakan yung pedal ayaw parin umandar. Before that happens nilinisan namin yung mga fuse sa ilalim ng steering wheel tapos check namin kung may busted ala naman po then the next day ayun na lumabas na yung sakit niya.
sir what could be the problem napalitan na namin yung spark plugs ganun parin tapos sabi ng mekaniko baka may problem sa kuryente or computer box na.

[v6dreamer]

I believe the reason for this trouble could be electrical. Somewhere from the battery/alternator system you are losing power. It could be a loose wiring connection or it could be a broken wire after you have clean the fuses. I would think that any garage would be able to find the problem easily.

[bambino]

kailangan mo diyan shop na may scanner para ma check muna kung may hard fault

[oj88]

^ I agree. You need to find out what's triggering the CEL so you can work methodically. Without knowing the extent of the "maintenance" you or the mechanic did to clean the fuse box, it's hard to tell what went wrong or what connectors were moved/removed.

It would also help if you have access to your car's shop manual if the owner's manual does not have comprehensive servicing instructions.

You could also try disconnecting the battery for a few minutes and see if all it needs is an ECM reset (assuming the ECM memory gets erased when the battery is disconnected). Not quite familiar with Nissan ECMs.

[userfriendly]

Does the engine crank but does not start or no sound at all as in really dead?
Best is to have it scanned para di trial and error method.

[marvs]

sir we solved the problem, thanks for the reply. ang problem lang pala is yung susi niya ginamit po ksi namin na susi yung duplicate yung mga ginawa sa mall. the original key has a sensor in it, it is a security features para po ata hindi manakaw yung sasakyan gamit yung duplicate na key.

[corbon44]

NATS (Nissan Anti-Theft System) - inconvenient but effective against car theft.

On my Cefiro, CEL occassionally remains lit and the engine does not crank at all. There is a clicking sound (relay?) from the fuse box under the steering wheel, to the left. I'm not certain if this is a loose connection but it cranks up after several tries.

Aside from the dealer, where would a "scanner" be available?

TIA.

[oj88]

Immobilizer. :D

Weird that the CEL would blink. On other cars, it's an icon with the shape of the key.

[corbon44]

Immobilizer...meaning the car alarm has been activated and is preventing the engine from starting? So, I need to "switch off" the alarm if this happens?

Geeez...thanks man.

[oj88]

Immobilizer...meaning the car alarm has been activated and is preventing the engine from starting? So, I need to "switch off" the alarm if this happens?

Geeez...thanks man.

Immobilizer is not the same as the alarm. Although, they're both used for theft prevention, they however serve two different functions.

Alarms are primarily used to prevent unauthorized entry into the vehicle.

On the other hand, immobilizers are used to prevent usage of the vehicle, even if the thief has an exact physical duplicate of the original key. Immobilizers makes use of transponders hidden inside the original key's handle. As you turn the ignition key to ON, the vehicle's immobilizer system queries the transponder. The transponder would then respond with the correct code wirelessly. If the wrong code is received or if there's no code at all, the engine will not start.

Some alarms emulate the function of an immobilizer by cutting off the ignition while it is armed.

Here's a short demonstration of how it works:

[ame="http://www.youtube.com/watch?v=BUpsSk_7zwQ"]YouTube - How the Immobilizer Works[/ame]

[corbon44]

I see...what might be the best thing to do so this does not happen? Reporgram the key/s (I have two NATS keys and it happens to both of them). Would a consult-ii scan detect the problem?

[matrixx]

sir oj88

My barkada has the same problem as this, he has been using his cefiro for a month then suddenly it stalled. He had it checked sa nissan sabe di na nga orig ang suse and need the orig one from nissan and needs to be reprogrammed. Medyo mahal, will cost about 15T

I was wondering if there is anyway to circumvent this. The last time the car was checked, di na nga nag iistart and the electrician told us that it is cutting the fuel line. Puro redondo na lang cia.

Is there a way to deactivate the demobiliser? thanks.

Aappreciate your help on this.

Immobilizer is not the same as the alarm. Although, they're both used for theft prevention, they however serve two different functions.

Alarms are primarily used to prevent unauthorized entry into the vehicle.

On the other hand, immobilizers are used to prevent usage of the vehicle, even if the thief has an exact physical duplicate of the original key. Immobilizers makes use of transponders hidden inside the original key's handle. As you turn the ignition key to ON, the vehicle's immobilizer system queries the transponder. The transponder would then respond with the correct code wirelessly. If the wrong code is received or if there's no code at all, the engine will not start.

Some alarms emulate the function of an immobilizer by cutting off the ignition while it is armed.

Here's a short demonstration of how it works:

YouTube - How the Immobilizer Works

[mda_]

i think it would be more expensive to take out the system rather than to just buy a new set of keys. as far as i know, the immobilizer system is linked to the engine ECU. the ECU kills the engine or prevents it from starting if the system sends it the wrong key/no immobilizer signal.

So to disable this, you would have to get a key/ignition set and a reprogrammed/new ECU without the immobilizer embedded into it.

i had this same problem with my old N16. engine stalled, wouldn't start, got stuck in our garage. mechanics could not trace the problem to anywhere until it was diagnosed with CONSULT and traced the problem to the key with a defective transponder. Cost something like 15-20k to replace the key and the ignition switch.

i'm thinking lang, baka rin possible kung lalagyan na lang ng aftermarket start/stop switch? i haven't seen how this works though.