Question about 1999 BMW 318 ti

1 Answer

Immoblizer module location

I have a no crank problem after changing the engine,i can jump the starter and it runs but the key switch isnt turning the strater,the signal leaves the switch but doesnt reach the strater,via a black wire with yellow stripe.shows it goes to immoblizer which im finding hard to locate. I need to know its location and its funchion ?

Posted by on

  • charles_usa7
    charles_usa7 Feb 25, 2013

    I have same issue - Did you fix it?

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 599 Answers

Immobilizer?..hmm... check brake switch and gear select switch (neutral safetly) for interupts

Posted on Dec 16, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

How do you replace the ignition switch on a 2002 buick century?


What do you mean no sound when turning key ? Does the car start an run ? Or the car doesn't crank ? Ignition switch's do not work the same way they did in the old days , especially on GM vehicles . The ignition switch is an input to the BCM - body control module , the BCM processes these inputs an then energizes relays to turn things on . Also sends messages to other modules for them to turn on or energize relays .
The power mode signal may be as simple as a B+ input wired to a particular ignition switch contact. If this is also the B+ supply to the module/device, the module/device will only operate with the ignition contact closed to B+. An example of this is the starter relay when it is wired directly to the CRANK/START contact of the ignition switch. When the CRANK/START contacts are closed, the starter relay is energized and provides a current source to the starter and starter solenoid. When the ignition switch leaves the CRANK/START position, the switch contacts open and the starter relay is de-energized. This removes the current source from the starter and solenoid and the starter operation stops.
Serial Data Power Mode
On vehicles that have several control modules connected by serial data circuits, one module is the power mode master (PMM). On this vehicle the PMM is the Body Control Module (BCM). The BCM receives 4 signals/circuits from the ignition switch. These are the Ignition 0, Ignition 1, Crank and Accessory 1 ignition switch signals/circuits.
To determine the correct power mode the BCM uses:
?€¢
The state of these signals/circuits, either switch closed (B+ = 1) or switch open (open = 0)


?€¢
The sequence of switch closures received by the BCM


?€¢
The status of the engine run flag.


Important: Any ignition switch states not covered in this table indicates a DTC setting situation.
The chart indicates the modes detected and transmitted by the BCM:
Power Mode Selected/Expected
Engine Run Flag Serial Data
Sampled Ignition Signal State
Power Mode State
Accessory
Ignition 0
Ignition 1
Crank
OFF-LOCK
0
0
0
0
0
OFF
Accessory
0
1
0
0
0
ACCESSORY
RAP
0
1 to 0
0
0
0
RAP
OFF-UNLOCK
0
0
1
0
0
UNLOCK
RAP
0
1 to 0
1
0
0
RAP-UNLOCK
Run
0
1
1
1
0
RUN
Crank
0
0
1
1
1
CRANK
Crank
1
0
1
1
1
CRANK
Run
1
1
1
1
0
RUN
Fail-safe Operation
Since the operation of the vehicle systems depends on the power mode, there is a fail-safe plan in place should the BCM fail to send a power mode message. The fail-safe plan covers modules with discrete ignition signal inputs as well as those modules using exclusively serial data control of power mode.
Serial Data Messages The modules that depend exclusively on serial data messages for power modes stay in the state dictated by the last valid BCM message until they can check for the engine run flag status on the serial data circuits. If the BCM fails, the modules monitor the serial data circuit for the engine run flag serial data. If the engine run flag serial data is True, indicating that the engine is running, the modules fail-safe to "RUN". In this state the modules and their subsystems can support all operator requirements. If the engine run flag serial data is False, indicating that the engine is not running, the modules fail-safe to "OFF-AWAKE". In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.
Discrete Ignition Signals Those modules that have discrete ignition signal inputs also remain in the state dictated by the last valid BCM message received on the serial data circuits. They then check the state of their discrete ignition input to determine the current valid state. If the discrete ignition input is active, B+, the modules will fail-safe to the "RUN" power mode. If the discrete ignition input is not active, open or 0 voltage, the modules will fail-safe to "OFF-AWAKE". In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.
You probably won't understand any of this info. your best but would be to take it to a qualified repair shop that has proper diagnostic test equipment !

Sep 29, 2016 | Buick Cars & Trucks

2 Answers

Cherokee 2012 engine does not start


where to start... see if lights turn on, if not charge battery, once battery is charge try again, if cranks then could be battery or alternator, if not could be starter, spark plugs, coilpack... after youve looked at that let me know, ill adv further.

Jul 02, 2016 | 2012 Jeep Grand Cherokee

1 Answer

I have 96 isuzu trooper3.2l v6 stick shift all power is good but when i stick key in switch and turn it no sound at all what could that be


electrical power you meant is seems good.
engine power zero.
starter dead.
this is no crank, ill post again,. for this, done so many times.

i use this thing called a voltmeter and avoid this jiggery pokery below...... time is money.

1: fuses good.battery terms clean? (all fuses, if you lack the FSM to see which ones are IN PLAY.)
2: battery charged to 12.6vdc reseted?
3: jumper cable cranking work now>? off a running donor car?
yes, the battery was dead, or weak, or discharged, test battery, test cars charging system and last make sure no drain on battery parked keys out of car..
4: NO, jump fails.
check or bypass clutch switch?
this cranks ok, (bad clutch switch at its pedal.)
if still dead it can be bad key switch or bad starter relay.
lets see if it has the relay. ,alldata.com says yes.

so does the starter relay close, cranking?
if not fix cause that first.
it needs fuses working
it needs power to the relay contactor input
power to the coil
and the coil enabling factor the clutch depressed and its switch must be closed.
and if the antithieft box, (factory option) is unhappy
the start relay coil will be dead.
start at the relay ,
does the (turned on) dash heater fan cut off, cranked
yes, then relay is closing
no, its not. find reason.
easy with a volt meter the 4 pins on relay.
pins 3,4,5,6
12v, 12v, 0v and 12v respectively.
if the pin 5 never goes to 0v, the immoblizer is unhappy.
sorry so small, Fixya shinks it to useless....

25691838-51hqzbz3dizfbnqgamxcgrll-4-0.jpg

May 12, 2015 | Isuzu Cars & Trucks

1 Answer

Suzuki Vitara no power to starter, every thing else electrical works.


2000 VIT (which engine, 1.6L 2.0L?) what transmission, A/T or M/T
auto or stick?
chip, what chip.>??? there is no starter chip
the NO Crank this is called.
did use jumper cable jump , off a running good car? yet.
this is the #1 first check.
(starter motor work now? yes, bad battery or simply discharged)
jumper starts, dead? that means we need to do test 2.
we hot wire the starter, motor solenoid.
jump tiny wire to big lug there.
it cranks fast, (wont start, keys are in pocket for safety) yes? good
no crank hot wired is a bad starter or seized engine. (turn engine by hand?)
yes, cranks hot wired.
that means the KEY line is dead. (bad PRNDL or bad Clutch switch)
if input to above switch is bad the ignition key switch is bad.
some VIt have an immoblizer. so the light for it must not glow. if opted.
see the tricks section !!!

the below shows all possible test. and all ways to fail and how to find it.
http://www.fixkick.com/nocrank.html

Jan 28, 2014 | 2000 Suzuki Vitara

2 Answers

No start, no crank


If the starter won't engage, you can't crank the engine. You would only hear the starter operating freely. The replacement starter may have to be shimmed to fully engage the ring gear. Also, did you verify that the ring gear is OK?

Nov 21, 2013 | 2004 Ford F150

1 Answer

Fuel relay


Short answer, your batter is bad. or is disCHARGED:
Long.:

wont crank?
no engine, cranks ,unless the starting system works.
unless pushed fast, like my car or i park on a hill and coast jump my car.(M/T tranny rule)

NO crank, is the true failure here:
slow Cranks are , bad battery , or a discharged battery , due to bad charging system or parked for 3 months or longer.

so ill assume its NO CRANK.
I turn the key TO START and the starter fails to CRANK.
the starter motor is dead. (key clue 1)
so i attach a set of jumper cables to my Caddy, running and this car
now cranks and RUNS (you left that out. above, huh? runs)

turnsover means nothing, because the engine starter turns over
and the engine can turn over and the engine can run,
once running the EFI system SUSTAINS runninng.
so there are 4 states there. (4 phases )

No cranks #1 reason to be slow , are a bad battery
so I charge that battery, and see how if it cranks , now?
it dont crank means a bad battery
it does work( crank) see how long it works.../?
if it dies again, or better, check the cars Alternator for by measuring
accross the battery terminals running , with any volt meter.
13.3 to 15vdc is a good alternator running the engine.
if NOT, the charge system is bad. (system)

On some cars the IMMO can block Cranking or for sure blocks
fueling after 2 seconds. So. watch the IMMO light on the dash.
Immo is the Immoblizer. option.





Sep 22, 2013 | 2001 Acura 3.2CL

1 Answer

My '97 Geo Metro LSi will not start. When I turn the ignition key on the buzzer, idiot lights, lights, horn, etc., everything electrical will work. If I turn ignition key to start, there is absolutely no...


It could be the starter, test the small wire going to the starter, it should have power when turning the key to start/crank. If it does, and the starter will not crank the engine, whack it with a hammer, if it then starts, replace the starter. If there is no power to the starter, then it could be the ignition switch, or the neutral switch, or a fuse/link blown.

Sep 06, 2010 | 1997 Geo Metro

1 Answer

When i turn the key on the engine starts but when i let go of the key the engine dies


I think your ignition switch is bad. The car is starting and running for a couple of seconds, right? Not just cranking with no fire? Can you put key in on position and jump starter externally? If you can jump starter but car won't run then definately problem in ignition switch.

Mar 05, 2010 | 1995 Acura Legend

2 Answers

95 F150 wont crank


the starter should be replaced. The solenoid is kikcing the pinion out but there is no contact being made to turn the starter motor. I have the exact same truck and before i changed the starter used the old starter tap trick. Tap the starter casing with a hammer and it should start turning again. hope this was helpful for you. Good luck.

Sep 16, 2008 | 1995 Ford F150 Styleside Regular Cab

Not finding what you are looking for?
1999 BMW 318 ti Logo

Related Topics:

168 people viewed this question

Ask a Question

Usually answered in minutes!

Top BMW Experts

Fred Sops

Level 2 Expert

271 Answers

Al Clark

Level 2 Expert

290 Answers

Doberman

Level 2 Expert

246 Answers

Are you a BMW Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...