Question about 2003 Chevrolet Silverado 1500

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I cant get a scan tools to communicate - 2003 Chevrolet Silverado 1500

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Check diagnostic fuse
key must be in run position with engine off
try scan tool on difrent car to see if it hooks up

Posted on Apr 02, 2011

  • e_mont Apr 02, 2011

    the fuses are good

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ISO9141 GMC ENVOY '08


Where are you coming up with this ?
ISO 9141 and KWP 2000 this is a communication protacoll. when the scan tool is plug into the OBD port it uses a set amount of communication dialog to communicate with the ECM, Majority of time when a scan tool can not communicate with the vehicles ECM ,

Apr 08, 2017 | 2008 GMC Envoy

1 Answer

Lost current communication with fuel injector control module


Lost current communication with fuel injector control module ? Would you like to try and explain that a little better ? Lost communication with Engine computer PCM/ECM ? A scan tool won't talk with the PCM / ECM ? What type scan tool ? Can your scan tool talk with any other control module on the vehicle ? BCM , EBCM , SRS etc... if you know what those are ? Or current , are you talking about electrical current ? I know I only have thirty years experience as automotive Tech . I need terms that I can relate to .

Dec 01, 2016 | Cars & Trucks

1 Answer

Inadv and rap 1 clicks when I try to start a 2002 Tahoe


Did you check for BCM codes
DTC B1477
Retained Accessory Power Circuit Low
DTC B1478
Retained Accessory Power Circuit High
DTC B1397
Device Voltage Reference Out #1 CKT Low
DTC B1398
Device Voltage Reference Out #1 CKT High
Charging system check ?

Diagnostic System Check - Retained Accessory Power
Test Description
The numbers below refer to the step numbers on the diagnostic table.

  1. Lack of communication may be due to a partial malfunction of the class 2 serial data circuit or due to a total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition.

  2. This step is checking for DTCs in the BCM.

  3. This step is checking for RAP specific DTCs.

Step

Action

Yes

No

1

Install a scan tool.

Does the scan tool power up?
Go to Step 2
Go to Scan Tool Does Not Power Up in Data Link Communications

2

  1. Turn ON the ignition, with the engine OFF.
  2. Attempt to establish communication with the body control module.

Does the scan tool communicate with the BCM?
Go to Step 3
Go to
Scan Tool Does Not Communicate with Class 2 Device in Data Link Communications

3

Important: The engine may start during the following step. Turn OFF the engine as soon as you have observed the Crank power mode.

  1. Access the Class 2 Power Mode in the Diagnostic Circuit Check on the scan tool.
  2. Rotate the ignition switch through all positions while observing the Class 2 Power Mode on the Scan Tool. Refer to the Serial Data Power Mode table within the Body Control System Description and Operation in Body Control Systems, for a list of the power mode states that correspond to each ignition switch position.

Does the Class 2 Power Mode parameter reading match the ignition switch position for all the selected positions?
Go to Step 4
Go to Power Mode Mismatch in Body Control System

4

Select the BCM display DTCs function on the scan tool.

Does the scan tool display any DTCs?
Go to Step 5
Go to the Symptoms list in the appropriate service category

5

Does the scan tool display B1477 or B1478?
Go to
Diagnostic Trouble Code (DTC) List
Go to Symptoms - Retained Accessory Power

May 10, 2016 | Cars & Trucks

1 Answer

Good day, why craftsman diagnostic scanner show 'communication error' whenever it's scanner Nissan vehicles


PDF]Communications Could Not Be Established with Your ...

www.wisconsinvip.org/WivipPublic/PDF/.../noncom052108.pdf
May 21, 2008 - computer alerts motorists of problems with the vehicle's emission control ... tampered with and the connection to the on-board diagnostic (OBD) ... itspower from the same circuit as the cigarette lighter. ... scan tool, connected to the data link connector (DLC) under the dash, not ... General Program Questions.Missing: craftsman ‎whenever

[PDF]OBDII ABS and Airbag Scan Tool - Actron

https://actron.com/craftsman/scan-tool/.../568593-Craftsman-39853-MN...
OBDII ABS and Airbag. Scan Tool. Model 39853 .... OBD II Diagnostic Trouble Codes (DTCs) . .... Program Mode . .... Error Messages . ... Vehicle Communication Fault ...... No warranty (expressed or implied) can be made for its accuracy or completeness... Go to www.actron.com/craftsman to download the Scanning Suite.

Scan Tool Help

www.scantoolhelp.com/
A scan tool is a must for automotive diagnostic work today. ... 1996 and newervehicles (one exception is Nissan), and (2) counting the series of flashes can be confusing. ... II monitors (ready means the monitor has completed its self-check process). ... with bidirectional (two-way) communication capability and the proper ...Missing: craftsman ‎whenever

Automotive Diagnostic Scanners -- OBD-I and OBD-II

www.mikeogara.net/improve_your_car/auto_scanners/

Jan 31, 2016 | Nissan Cars & Trucks

1 Answer

2006 gmc canyon will not go into 4 wheeldrive after 5 minutes of driving


The first place to start is have it checked for codes an to see if a scan tool will communicate with the 4X4 control module !
Diagnostic Starting Point - Transfer Case
Begin the system diagnosis with the Diagnostic System Check - Vehicle . The Diagnostic System Check will provide the following information:
?€¢
The identification of the control module or modules that command the system.


?€¢
The ability of the control module or modules to communicate through the serial data circuit.


?€¢
The identification of any stored diagnostic trouble codes (DTCs) and the status of the codes.

The use of the Diagnostic System Check - Vehicle will identify the correct procedure for diagnosing the system and where the procedure is located.
Install a scan tool.
Does the scan tool power up?
Go to Step 3
Go to Scan Tool Does Not Power Up

3

  1. Turn ON the ignition, with the engine OFF.
  2. Attempt to establish communication with all of the control modules on the vehicle. Refer to Scan Tool Does Not Communicate with Class 2 Device for the modules you should expect to observe.
Does the scan tool communicate with all of the expected vehicle control modules?
If you don't have a scan tool that will communicate with all modules on the vehicle or understand this , your best bet is to take it to a ASE certified repair shop or the dealer .

Jan 07, 2016 | 2006 GMC Canyon Crew

1 Answer

2000 buick lesabre leveling compressor won't turn on I took off n hooked to battery and works that way I checked all relays and fuses and there good


This is the way you start diagnosing this system !
Automatic Level Control Diagnostic System Check
Install a scan tool. Does the scan tool power up?
Go to Step 2
Go to Scan Tool Does Not Power Up in Data Link Communications

2
  1. Turn ON the ignition, with the engine OFF.
  2. Attempt to establish communication with the Rear Integrated Module (RIM).
Does the scan tool communicate with the RIM?
Go to Step 3
Go to Scan Tool Does Not Communicate with Class 2 Device in Data Link Communications
Select the automatic level control display DTC function on the scan tool.
Does the scan tool display any DTCs?
Go to Step 4
Go to Symptoms

4
Does the scan tool display any DTCs which begin with a "U"?
Go to Scan Tool Does Not Communicate with Class 2 Device in Data Link Connector Diagnosis
Go to Step 5

5

Does the scan tool display DTC B1007 or B1009?
Go to Diagnostic Trouble Code (DTC) List/Type in Body Control System
Go to Step 6

6

Does the scan tool display DTC B1327?
Go to Diagnostic Trouble Code (DTC) List/Type in Engine Electrical
Go to Diagnostic Trouble Code (DTC) List/Type
This is one you should take to a ASE certified repair facility , there are electronic modules involved you have no idea about !

May 16, 2015 | 2000 Buick LeSabre

1 Answer

I have 08 ford escape when I try to scan it said no communication


Do you know about communication networks or serial data communications on vehicles , these let the scan tool communicate with the different modules on the vehicle ! Newer vehicles have several, PCM - powertrain control module , Anti-theft module , Air bags , antilock brakes , Body control module or in the case of ford a smart junction box . an some others !
Communications Network Vehicle communication utilizes both International Standards Organization (ISO) 9141 and controller area network (CAN) communications. ISO 9141 is used for diagnostic use only, and CAN is used for many modules to communicate with each other on a common network. CAN in-vehicle networking, is a method for transferring data among distributed electronic modules via a serial data bus. Without serial networking, intermodule communication requires dedicated, point to point wiring resulting in bulky, expensive, complex, and difficult to install wiring harnesses. Applying a serial data network reduces the number of wires combining the signals on a single network. Information is sent to the individual control modules that control each function.
The vehicle has 3 module communication networks:
  • ISO 9141
  • Medium speed (MS) CAN
  • High speed (HS) CAN
All 3 networks are connected to the data link connector (DLC). This makes diagnosis and testing of these systems easier by allowing one scan tool to be able to diagnose and control any module on the 3 networks from one connector. The DLC can be found under the instrument panel between the steering column and the audio unit.
HS-CAN Network Operation
The HS-CAN network communicates using bussed messages. The HS-CAN network uses an unshielded twisted pair cable, data bus (+) and data bus (-) circuits. In addition to scan tool communication, this network allows sharing of information between all modules on the network.
The HS-CAN is a high speed communication network used for the following modules:
  • ABS module
  • 4WD control module (if equipped)
  • Instrument cluster
  • PCM
  • MS-CAN Network Operation
    The MS-CAN network communicates using bussed messages. The MS-CAN has an unshielded twisted pair cable, data bus (+) and data bus (-) circuits. In addition to scan tool communication, this network allows sharing of information between all modules on the network.
    The MS-CAN is a medium speed communication network used for the following modules:
    • Instrument cluster
    • SJB
    HS-CAN Network
  • What type of scan tool are you using ? or are you using a code reader ?

  • What
Computer No Communication Troubleshooting by Wells Saturn Toyota Echo No Communication Case Study

Mar 18, 2015 | 2008 Ford Escape

1 Answer

Why scan tool doesn,t connect to truck.


ecm has been replaced????? was it programmed ?

Sep 27, 2017 | 2003 Chevrolet Avalanche

1 Answer

B2100= ignition run/start input circuit performance u0126= lost communication with steering u0114= lost communication with final drive output module (2times) u110a= lost communication with SCM-CAN-C ...


no year stated, are you kidding?
good luck fixing this. not at dealer, or a real ASE shop.
wow, 2, does car run perfectly, gee, that be #1 right?

can bus errors.
what you can do is.:
  1. test all fuses.
  2. charge car battery up to 12.6vdc rested, !!!
  3. clear them all with scan tool do they come back? yes?/no?
  4. unplug battery for 1 hours, (neg lug off only) and put back
  5. fixed?
  6. unplug all modules (up to 11) 1 by one, battery unplugged. and see that connector looks clean, and put it back.
  7. or unplug one , see if some errors clear. and only module unplugged is now in error,
  8. The can-buss is shared highway, and has 1 lane. so if one module takes a dump on it, the others cant talk on said bus.
  9. That means its hard to find, unless you take a class in CAN-BUS 101. how to diagnose it.
  10. go to a real shop with ASE badge on sleeve and gray side burns, and win, a real mech, wont make excuses but In fact most shop do not have the powerful scan tool jeep has. not nearly. Find a shop that can diagnose CAN-BUS, if they go , what's that, MOVE ON !

Dec 04, 2010 | Jeep Commander Cars & Trucks

2 Answers

2001 sentra no communication with scan tool


Take a few minutes to make sure you dont have a blown fuse....Run through them with your test light...

Nov 17, 2009 | 2001 Nissan Sentra

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