Question about 2004 Suzuki Verona

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2004 Suzuki Verona 2.5 data link connector wiring diagram no pcm communication

Comm fail.

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  • Suzuki Master
  • 20,706 Answers

Are you in USA
is your tool 2004 or newer, or CAN-bus certified.?
there are 2 fuses that can blow, and killl pin 16 on the OBD2 connector this is a fact. and disables all scan tools. if true.
we use a volt meter on pin 16 first. omg, its 0v.
in 1min. work. not guessing for going mad.
then make sure your tool (unstated brand or model by you)
if not in the USA< the answers will be different.
if 12vdc is on pin 16 then then the wrong scan tool is being used.
99.9% of the time.
Tell us what pins are populated on your OBD2 DLC port. 16pins.
I can the tell you whats up.

Posted on Dec 23, 2016

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  • Expert
  • 68 Answers

Hello just a guess here but by any chance is the lighter still working check for a blown fuse i have had this problem in the past and have traced it back to a fuse to the lighter or something crazy like that and as soon as i fixed this then i got communication back to the PCM. They run the power for the OBD connector off of other thing in the car

Posted on Dec 14, 2016

Testimonial: "Thanks gay so i have power iin pin # 16 and two ground in pin 4&5 of the data coneector im think im have damage pcm I need check the wires first so iineed the diagram"

  • 4 more comments 
  • Tim Nissen Dec 21, 2016

    Hello do you have a picture of what the data link looks like so i can get you the right diagram

  • _-__-___-_
    _-__-___-_ Dec 21, 2016

    JUAN:
    no country stated.!!! why?
    H25 engine we get that,...
    but our H25 is not same as H25 in other countries. (a fact,1)
    first learn this, OBD2 is USA invention.fact 2

    and IF you are here, using a scan tool from 1996
    in a 2004 car.that will fail, due to the new CAN BUS interface (signal levels and new pins) (get a new tool now)

    out side usa, they run OBD1 until 2006
    so our tools dont work on those cars
    and the reverse of that is true too.

    see why not post country and be like the 6th person to ever do that... a WIN/WIN
    now only that,
    no stated scan tool maker, model nor year tool was made
    I'm and expert on OBD2, so.....
    RECAP:
    post country?
    then post VIN, with 3 x's on the end. for privacy.?
    the post photo of your DLC.?
    is the DLC with 16pins,
    what pins are wired.
    if you tell all that, this is super easy for
    any PCM expert.

    rule 4, a 16pin DLC does NOT Prove its OBD2.
    DOES NOT.

  • _-__-___-_
    _-__-___-_ Dec 21, 2016

    if in usa, the VERONA
    needs a scan tool that is certified
    CAN-BUS supported.
    if not failure is the day.
    btw , our cars now are USA federal law mandated to Canbus...
    on or about 2004 it began and full compliance in 2008
    pin 6 and 14 wired.

  • _-__-___-_
    _-__-___-_ Dec 21, 2016

    http://www.obdii.com/connector.html

    here are the pins
    this is also covered in the wiki.

  • _-__-___-_
    _-__-___-_ Dec 21, 2016

    no scan too stated, no year tool made
    the 1996 tools made then, never work on
    any car with CAN-BUS oBD2.
    not one does.
    the first cars were CAN-bus 2004 and 2008 its by law now. EPA laws.
    Many makers of cars upgraded early , there call. there decision.

  • _-__-___-_
    _-__-___-_ Dec 21, 2016

    there are 5 (Tx/RX) signalling pin levels.
    there are many tools made that did not do all 5. vast tools like that.(all old)
    what tool is yours?

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the FSM is only 4 bucks. posted over 100 times here now.

https://suzukipitstopplus.com/Products/1135-2004-verona-service-manual.aspx

why send a link to a GM car? odd that.
to make links work have and enter key before and after the link
like mine..

ill actual look for you.
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25834733-ejfpft3wub3uuurdaenrg0f2-4-0.jpg
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Need to mknow the part number for the actauators in doors for 2004 suzuki Verona


go to suzuki yet?, in usa they are IMPLODED, (bugged out)
Verona? 2004
here is the EX model
if confused call them. and give VIN
and they can in fact match VIN to any part. you want
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http://www.suzukicarparts.com/parts/2004/Suzuki/Verona/EX?siteid=214820&vehicleid=187312§ion=BODY%20HARDWARE&group=FRONT%20DOOR&subgroup=&component=&diagram=viewAll

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Where is a bcm located on a 03cad.cad.deville?


You can not reset a BCM ! If there is a problem with one of the systems associated with the BCM . It has a DTC stored in memory ! Besides your vehicle does not have a BCM ! It has three modules !
The body control system consists of the following 3 modules:
?€¢
The Dash Integration Module (DIM)


?€¢
The Instrument Panel Module (IPM)


?€¢
The Rear Integration Module (RIM)

Each of the 3 body control modules integrate a number of functional systems under the control of a single module. Each module is connected to the Class 2 serial data circuit, many of the control functions are implemented by Class 2 messages.
Dash Integration Module (DIM)
The various DIM input and output circuits are described in the corresponding functional areas as indicated on the DIM electrical schematics.
The DIM functions include the following:
?€¢
Class 2 communication requiring DIM interaction.


?€¢
Control of exterior lamps.


?€¢
Control of front fog lights.


?€¢
Control of the headlights.


?€¢
Headlamps on with wiper input.


?€¢
Hood ajar switch input w/export.


?€¢
Horn relay control.


?€¢
Interior lamps incandescent dimming.


?€¢
Low side temperature for HVAC compressor.


?€¢
Power moding control over Class 2 serial data circuit.


?€¢
Reverse lockout solenoid control.


?€¢
Steering wheel controls input.


?€¢
Storage of the clock settings and, sending a message out on the class 2 serial data circuit in response to requests from other modules.


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 DIM. The PMM receives 4 signals from the ignition switch.
To determine the correct power mode the PMM uses the following circuits:
?€¢
Accessory voltage


?€¢
Ignition 1 voltage


?€¢
Ignition 3 voltage


?€¢
Off/Run/Crank voltage


You have no idea what your getting yourself into when messing with these thing's ! You mess with the wrong thing an your vehicle will never work again , not for you anyway ! These modules all communicate together on a class 2 serial data network ,
The data link connector (DLC) allows a scan tool to communicate with the class 2 serial data line. The serial data line is the means by which the microprocessor-controlled modules in the vehicle communicate with each other. Once the scan tool is connected to the class 2 serial data line through the DLC, the scan tool can be used to monitor each module for diagnostic purposes and to check for diagnostic trouble codes (DTCs). Class 2 serial data is transmitted on a single wire at an average of 10.4 kbps. This value is an average; class 2 uses a variable pulse width modulation to carry data and depending on the message it may operate faster or slower. The bus will float at a nominal 7 volts during normal operation. Each module can pull this lower during the transmission. The bus is not at battery positive voltage or ground potential during normal operation. When the ignition switch is in RUN, each module communicating on the class 2 serial data line sends a state of health (SOH) message every 2 seconds to ensure that the module is operating properly. When a module stops communicating on the class 2 serial data line, for example, if the module loses power or ground, the SOH message it normally sends on the data line every 2 seconds disappears. Other modules on the class 2 serial data line, which expect to receive that SOH message, detect its absence; those modules in turn set an internal DTC associated with the loss of SOH of the non-communicating module. The DTC is unique to the module which is not communicating; for example, when the inflatable restraint sensing and diagnostic module (SDM) SOH message disappears, several modules set DTC U1088. Note that a loss of serial data DTC does not normally represent a failure of the module that set it.
On some vehicles, if the powertrain control module (PCM) is unable to communicate with the vehicle theft deterrent (VTD) system after the vehicle has started, the PCM will consider the VTD system to be malfunctioning. The PCM will enter a fail enable state and will command the security indicator to illuminate. When the PCM is in a fail enable state, the vehicle will NOT stall or stop running. If the PCM is in a fail enable state when the ignition is switched OFF, the PCM will remain fail enable until communications with the VTD system has been restored. When the PCM is in a fail enable state, the VTD system is NOT active and the vehicle will start. This feature is NOT available on all GM vehicle lines.
Data Link Connector (DLC)

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Air vents don&#39;t move on my alto


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check fuses.?

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Suzuki diagram


of what.
the engine mech.
engine electrical
engine, vacuum
engine. oil paths.
?
old post , but my guess, youd say all
well that is easy
buy and FSM like we do.
or alldata.com
or suzuki pit stop plus and get a 4buck day pass. ..

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1 Answer

Do you have a diagram for 2004 suzuki verona 24v?


of what? the book has 100s of pages, for all systems. related
diagram, can e mech, electical, psnumatic, hydraulic, vacumm?

no engine stated. which one.? exactly
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this engine?

All this is covered (for all cars) by the FSM. factory serv. man.
and is sold by suzuki pit stop, (google that see it?)
or alldata.com (log in and read)
or buy a used book on fleabay.com


https://suzukipitstopplus.com/Products/1135-2004-verona-service-manual.aspx


there it is.




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1 Answer

Codes po171 174


Here we go.... just pulled out our service ticket:

Soooo interesting, I had never looked at these before:

So on 1/10/2005 we took the Vue in, and they did the following:
date: 1/10/2005
"CUSTOMER STATES THE SES LIGHT IS ON"
CAUSE: UNKNOWN
TECH COMM: SES LIGHT IS ON. FOUND FUEL TRIM LEAN CODE P0171 & P0174. RETORQUE INTAKE VACUUM CHAMBER BOLTS AND INSTALL VACUUM CHAMBER SPRINGS PER BULLETIN02/06/01/016A

REPAIR 1: INLET AIR CONTROL VACUUM RESERVOIR - REPLACE


Then, evidently it came back on a week later:

date 1/17/2005:

LINE1: "CUSTOMER STATES THE SES LIGHT IS ON"
CAUSE: OPEN
TECH COMM: SES LIGHT IS ON.
FOUND CODE P0171 FUEL TRIM LEAN B1 CODE P0174
FOUDN MASS AIR FLOW SENSOR FAILED REPLACED MAF SENSOR


...

The problem NEVER came back..

There's my experience. Good luck!

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