GMC Tech2 User Manual
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GMC Tech2 User Manual

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General Motors Tech2 User Guide
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Summary of Contents for GMC Tech2

  • Page 1 General Motors Tech2 User Guide GM Tech2 User Guide...

  • Page 2: Gm Tech2 User Guide

    General Motors Tech2 User Guide GM Tech2 User Guide The Tech2 User’s Guide provides a comprehensive overview of the Tech2 scan tool. Everything contained in this manual is based on the latest product information available at the time of publication. The right is reserved to make changes at any time without notice.

  • Page 3: Table Of Contents

    Initial Hardware Installation ....................16 PCMCIA Card Removal ....................23 PCMCIA Card Insertion ....................23 Vehicle Communications Interface Module Removal ............25 Tech2 Keypad ........................28 Tech2 Connection to Vehicle....................31 Tech2 Connection to TIS2Web Computer ...............33 Power Supplies ........................35 Adapters..........................38 Software ..........................84 Tech2 Main Menu ......................84 TIS2Web .........................108 The Service Programming System (SPS) ..............118...

  • Page 4: Customer Support Overview

    General Motors Tech2 User Guide Customer Support Overview Independent Repair Customers can obtain assistance with a question or problem concerning the operation of the Tech2 and its attached products, telephone the ACDelco Aftermarket Support Center. Before Calling Before making a call to the ACDelco Aftermarket Support Center, be sure to have the following information ready: •...

  • Page 5: Declaration Of Conformity

    Type of product: Automotive Diagnostic Tester Compliance with the harmonized Norms and Standards listed below proves the conformity of the Tester: Tech2 Assembly, VTX with the provisions of the EC directives, in particular; DIN EN 61326:1997, with attachment 1:1998 and attachment 2:2001 The declaration certifies the conformity with the indicated directives and norms, but does not constitute a representation of properties.

  • Page 6: Important Pc Hardware Guidelines

    General Motors Tech2 User Guide Important PC Hardware Guidelines ACDelco provides IT guidelines to help users have a seamless experience when using TIS2Web software applications. To avoid unnecessary compliance issues with TIS2Web, please review and adhere to the stated infrastructure guidelines at the following link: http://www.gmdesolutions.com/services/standards.php...

  • Page 7: Limited Warranty

    General Motors Tech2 User Guide Limited Warranty SOFTWARE: Bosch Diagnostics/Vetronix warrants for a period of ninety (90) days from the date of purchase that the Bosch Diagnostics/Vetronix software product will execute its programming instructions when properly installed. Bosch Diagnostics/Vetronix does not warrant that the operations of the Bosch Diagnostics/Vetronix software will be uninterrupted or error free.

  • Page 8: Using This Manual

    Disclaimer The Tech2 is designed for use by trained service personnel only. It has been developed for the sole purpose of diagnosing and repairing automotive systems with electronic controls and interfaces.

  • Page 9: Things You Should Know

    CAUTION: SPARKS The Tech2 uses parts that can produce arcs or sparks. When used in a garage environment, the Tech2 must be located not less than 18 inches (460 mm) above the floor. NOTICE: •...
  • Page 10 General Motors Tech2 User Guide Federal Communications Commission (FCC) Compliance This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.

  • Page 11: Tech2 Overview

    • Heavy-duty cables and connectors You can expect years of trouble-free service if you take reasonable care of the Tech2 and follow the maintenance procedures outlined in Section II. Your Tech2 will be composed of a base kit and a variety of the following subcomponents:...
  • Page 12 3000110 RS-232 cable 3000111 RS-232 DB9 adapter 3000112 RS-232 loopback adapter 3000116 Storage case Table listing Tech2 base kit part numbers and descriptions. See illustrations Part Number Adapter or Accessory 3000099 NAO 12/19 adapter 3000100 Opel 10/19 adapter 3000101 SAAB 10/19...
  • Page 13 Universal power cable SI 250 volts AC/6 amps* *European and international use Table listing part numbers for Tech2 power supplies and cables. Commands The Tech2 prompts you to enter commands via the membrane keypad for: • Retrieving and viewing diagnostic information •...
  • Page 14 24 months beginning five days after the date of shipment to your service center. If your Tech2 must be sent in for repair, contact Vetronix Corp. 1.800.321.4889, option 7. Use the package that the replacement arrives in to return the defective unit. You can contact the ACDelco Aftermarket Support Center at 1.888.212.8959 for the exact...

  • Page 15: Care & Cleaning

    General Motors Tech2 User Guide Care & Cleaning After using the Tech2, a few simple steps will insure that you get the most life out of this diagnostic tool. NOTICE: Do not spray or pour cleaner anywhere on the Tech2. If the Tech2 should become dirty, clean it with a mild detergent or hand soap.

  • Page 16: Getting Started

    The Tech2 contains two serial communication ports: the RS-232 and the RS-485. Use the RS-232 port for downloading data from another computer to the Tech2. The RS-485 port is currently not used.
  • Page 17 General Motors Tech2 User Guide 2. Attach the Tech2 DLC cable (P/N 3000095) to the VCI connector...
  • Page 18 General Motors Tech2 User Guide 3. Locate the DLC loopback adapter (P/N 3000109) in the storage case. Attach it to the DLC cable...
  • Page 19 4. Locate the NAO (P/N 3000113) or Universal (P/N 3000115) power supply and appropriate power cord in the storage case. Insert the power jack into the Tech2 DLC cable or into the bottom of the Tech2 next to DLC cable connector.
  • Page 20 General Motors Tech2 User Guide Connection of the power jack to the DLC cable...
  • Page 21 General Motors Tech2 User Guide 5. Turn on power by pressing the PWR button located on the Tech2 keypad. 6. Tech2 hardware will be verified automatically by the POST test. (For information on this program, Troubleshooting.) 7. Disconnect the RS-232 loopback adapter, the power supply, and the DLC loopback...
  • Page 22 General Motors Tech2 User Guide...

  • Page 23: Pcmcia Card Removal

    The PCMCIA Card is accessed by opening the hinged door located at the top of the Tech2. The card is found in the upper slot. The lower slot will be used for future enhancements. Press the arrow button (located beside the slot) to eject the card.
  • Page 24 General Motors Tech2 User Guide PCMCIA card keying...

  • Page 25: Vehicle Communications Interface Module Removal

    The Vehicle Communications Interface (VCI) module is located at the lower end of the Tech2. Removal of this module is required only if the VCI needs to be updated or replaced. To remove the module disconnect Tech2 DLC cable if attached, move the lever all the way...
  • Page 26 General Motors Tech2 User Guide VCI module removal...
  • Page 27 General Motors Tech2 User Guide VCI module removed Hand Strap Adjustment The Tech2 velcro hand straps may be adjusted for individual needs as shown in the illustration below.

  • Page 28: Tech2 Keypad

    Help (?) key Control Keys The [PWR] key is used to turn the Tech2 on or off. The status indicator light above this key will be illuminated green when the Tech2 is operational. The [SHIFT] key is used with the up and down arrow keys to change screen brightness and contrast.
  • Page 29 Four soft keys are located directly below the Tech2 screen. The soft keys correspond directly to the four possible selection boxes found at the bottom region of the Tech2 screen. These selections may change from screen to screen and are under the control of the application software.
  • Page 30 Tech2 screen and return to a previous screen. Function Keys Ten function keys (F0 to F9) are located on the Tech2 keypad. A function key may be pressed to initiate a specific Tech2 function. In some cases the function keys are used for numeric data entry.

  • Page 31: Tech2 Connection To Vehicle

    General Motors Tech2 User Guide Tech2 Connection to Vehicle The Tech2 receives power through the DLC cable connection to vehicles equipped with On-Board Diagnostics (OBD II). In the case of vehicles not equipped with OBD II, an external power source such as a vehicle cigarette lighter must be used.
  • Page 32 General Motors Tech2 User Guide Attaching the Tech2 to non-OBD II equipped vehicles...

  • Page 33: Tech2 Connection To Tis2Web Computer

    General Motors Tech2 User Guide Tech2 Connection to TIS2Web Computer At times the Tech2 will need to be connected to a computer. Reasons for connection to a computer include the following: • Transfer of vehicle data (calibration information, “snapshot,” etc.) from the Tech2 to the computer •...
  • Page 34 1. Plug the serial port adapter (P/N TA00040) into the serial port marked “A” or “1” on the back of the computer or to the USB port using the USB serial adapter. 2. Plug the Tech2’s RS-232 cable into the serial port / USB port adapter and connect the appropriate power supply.

  • Page 35: Power Supplies

    Proper grounding may not be present if power source is connected directly to Tech2. When the Tech2 is connected to the DLC of an appropriate vehicle, the vehicle battery supplies power. When the Tech2 is not connected to the vehicle’s DLC, the DLC cable power jack connector accepts power from the following: •...
  • Page 36 This cable contains one fuse and two connectors. It has a cigarette lighter plug at one end and a power jack at the other. The power jack connects to the Tech2 DLC cable and carries power to the Tech2 when the selected vehicle adapter does not provide power.
  • Page 37 General Motors Tech2 User Guide Table showing various types of power cord plugs for the Tech2...

  • Page 38: Adapters

    DLC Cable The DLC cable (P/N 3000095) has a 26-pin connector with thumb screws at one end that connects to the Tech2’s VCI cable connector. At the other end is a 19-pin connector that connects to a variety of adapters.
  • Page 39 General Motors Tech2 User Guide RS-232 Cable The RS-232 cable (P/N 3000110) has an 8-pin RJ45 plug connector at each end. This cable attaches to the Tech2 RS-232 port and is used to communicate with the TIS2Web computer.
  • Page 40 General Motors Tech2 User Guide RS-232 cable connections...
  • Page 41 General Motors Tech2 User Guide RS-232 DB9 Adapter The RS-232 DB9 adapter (P/N 3000111) has an RJ45 connector at one end and a DB9 connector at the other. This adapter allows the connection of the Tech2 to some computers.
  • Page 42 The loopback adapter (P/N 3000112) has an 8-pin RJ45 connector that attaches to the Tech2 RS-232 port. It is used to perform the Tech2 self test. DLC Loopback Adapter Various Tech2 applications require the DLC loopback adapter (P/N 3000109), which has a Burndy cable connection end and a VCI DB-26 connection end.
  • Page 43 General Motors Tech2 User Guide End views of the DLC loopback adapter USB to Serial Port Adapter Not all USB to serial port adapters are compatible with the Tech2. ACDelco recommends using the Keyspan brand USB to serial port adapter.

  • Page 44: Troubleshooting

    Typical Tech2 connection to a computer (rear view) Troubleshooting This is a general troubleshooting guide for all vehicle applications of the Tech2 scan tool. Some of the information may differ for your particular vehicle application. If the Tech2 appears to be operating abnormally, refer to this section—particularly the diagnostic charts and troubleshooting tables—for probable causes and solutions.
  • Page 45 General Motors Tech2 User Guide Power On Self Test (POST) Power On Self Tests run automatically each time the power [PWR] button on the Tech2 keypad is pressed on. The screen displays pass or fail results for each area tested. POST automatically checks the following: •...
  • Page 46 General Motors Tech2 User Guide Tech2 startup screen...
  • Page 47 General Motors Tech2 User Guide Tools Options selected on Main Menu...
  • Page 48 General Motors Tech2 User Guide Self Test selected on Tool Options menu Tech2 Self Test Main Menu Each Tech2 Self Test main menu selection is explained in detail on the following pages. All users have access to all the options listed.
  • Page 49 F0: Automated Main PCB and VCI Test Selecting Automated Main PCB and VCI is a quick way to test the performance of the main Printed Circuit Board (main PCB—the Tech2 main circuit board) and the Vehicle Communications Interface (VCI). The Tech2 displays a test-in-progress screen while...
  • Page 50 General Motors Tech2 User Guide Connection of DLC loopback adapter to the Tech2 VCI connector...
  • Page 51 General Motors Tech2 User Guide Automated Main PCB and VCI test selected on Tech2 Self Test main menu...
  • Page 52 General Motors Tech2 User Guide Test Status...
  • Page 53 General Motors Tech2 User Guide Test Pass...
  • Page 54 Sound transducer • Real-time clock If the Tech2 passes all Automated Main PCB and VCI tests, you will not need to run any more tests to verify that the Tech2 is working properly. The following test results will be displayed: Total Pass........
  • Page 55 Total Failures......0 - indicates that Tech2 passed test 1 - indicates a test failure PCMCIA Cards Present...1 or 2 indicates how many cards present in Tech2 Once tests are complete, select the soft keys Main Details or VCI Details to review the results of the main PCB or VCI tests.
  • Page 56 General Motors Tech2 User Guide F2: Automated VCI Test This test works the same as the Automated Main PCB and VCI test, except the PCB portion of the test is not included. F2: Automated VCI Test...
  • Page 57 Time is displayed correctly. Reset clock. Cycle Tech2 clock power and retest. If time is not Invalid values are displayed retained, contact Customer for date, year, hour, minute, Support or second Diagnostic chart for Tech2 Main Printed Circuit Board (PCB)
  • Page 58 General Motors Tech2 User Guide VCI MODULE DIAGNOSTIC CHART Test Results Solution MUX A: S5 & S14 If MUX A or B fails, cycle Tech2 power and retest. If (Multiplexer) pass/fail problem persists, contact MUX B: S1 & S3 Customer Support.
  • Page 59 General Motors Tech2 User Guide VCI MODULE DIAGNOSTIC CHART (continued) Test Results Solution GND FET – pass/fail GND FET Check loopback adapter (Ground Field to make sure it is Effect Transistor) connected, cycle Tech2 and retest. If problem persists, contact Customer Support HPCC –...
  • Page 60 MUX A 2.5 V Lo - pass/fail If problem persists, MUX A 5.0 V Hi - pass/fail contact Customer MUX A 5.0 V Lo - pass/fail Support. (results from selectable VCI test) Diagnostic chart for Tech2 Vehicle Communications Interface (VCI) module...
  • Page 61 General Motors Tech2 User Guide Automated Main PCB test selected on Tech2 Self Test main menu...
  • Page 62 General Motors Tech2 User Guide Automated VCI test selected on Tech2 Self Test main menu F3: Selectable Main PCB Test Choose F3: Selectable Main PCB after a fail message has been displayed during the Automated Main PCB and VCI or Automated Main PCB tests. When you choose F3: Selectable Main PCB, a screen like the one shown in is displayed.
  • Page 63 General Motors Tech2 User Guide Selectable Main PCB test selected on Tech2 Self Test main menu F4: Selectable VCI Test Choose F4: Selectable VCI after a fail message has been displayed during the Automated Main PCB and VCI or Automated VCI tests. When you choose F4: Selectable VCI, a screen is displayed where you may select individual tests for failed components.
  • Page 64 General Motors Tech2 User Guide Selectable VCI test selected on Tech2 Self Test main menu...
  • Page 65 General Motors Tech2 User Guide First selectable VCI Self Test screen...
  • Page 66 General Motors Tech2 User Guide Second selectable VCI Self Test screen F5: Power On Self Test Results Choose F5: Power On Self Test Results after a fail message has been displayed during the Power On Self Test (POST). Specific information on the failure will be displayed on the...
  • Page 67 General Motors Tech2 User Guide Power On Self Test Results selected on Tech2 Self Test main menu...
  • Page 68 No Power to Tech2 Troubleshooting Tables Use the following tables to diagnose, isolate, and correct power source problems that may cause a No Power condition to your Tech2 scan tool. To help determine power supply source, see Power Supplies section.
  • Page 69 2. Using a digital multi-meter (DMM), verify voltage output at cigarette lighter power cable power jack. Do you have battery voltage output? 1. Remove DLC cable from Tech2. Replace DLC Problem with Tech2. cable. Contact Customer 2. Plug in cigarette lighter power Support.
  • Page 70 General Motors Tech2 User Guide Power Source: Battery Power Cable Step Action 1. Unplug battery power cable Go to Step 2 Go to Step 3 power jack from DLC cable. 2. Using a digital multi-meter (DMM), verify voltage output at battery power cable power jack.
  • Page 71 A three-amp removable fuse is located in the cigarette lighter power cable (P/N 3000096) connector. When required, check or replace the fuse by performing the following steps: 1. Ensure cigarette lighter power cable is not connected to vehicle or Tech2. 2. Unscrew fuse retainer cap and remove three-amp fuse.
  • Page 72 Two three-amp fuses are located in the battery power cable (P/N 3000097) three-amp fuse box. When required, check or replace the fuse(s) by performing the following steps: Ensure battery power cable is not connected to vehicle battery or Tech2. Use a standard fuse puller to remove the fuse(s) from the fuse box.
  • Page 73 General Motors Tech2 User Guide Battery power cable three-amp fuse replacement CAUTION: To help avoid personal injury by electric shock, make sure the battery power cable is not connected to the vehicle’s battery before removing the fuse(s).
  • Page 74 The following troubleshooting information applies only to the CANdi module. This application is unavailable for most vehicles at the time of writing. If the Tech2 loses power during programming, the CANdi module will not be properly programmed. The CANdi module will be automatically reprogrammed when power is available.
  • Page 75 If this occurs, power the Tech2 off and start again. If the problem persists, follow the troubleshooting tests. It is also possible to connect a CANdi module after the Tech2 has been powered up via the VCI. If this occurs, the Tech2 will not detect CANdi module and will not properly communicate, even if the LED is flashing on the CANdi module.
  • Page 76 • Worn or damaged cable that results in a poor connection between the CANdi module and the VCI If this occurs, check all Tech2 and CANdi module connections, power off the Tech2 and start again. If problem persists perform the troubleshooting tests at the F4 Option - on the self-test menu.
  • Page 77 General Motors Tech2 User Guide CANdi Module Diagnostics Select “CANdi Diagnostics” from the Tech2’s Tools Options menu. If the CANdi module is not connected a screen will appear. CANdi module not detected screen...
  • Page 78 General Motors Tech2 User Guide CANdi Diagnostics selected on Tool Options menu...
  • Page 79 General Motors Tech2 User Guide CANdi Diagnostics menu: “POST Results” or “Self Test” When you select “POST Results” from the CANdi Diagnostics menu, a results screen appears. You can use the information to determine if the CANdi module had any problems during its start-up sequence.
  • Page 80 GM part number. Although PVI adapters are similar to GM adapters, they will not work with the CANdi module. 2. Verify that the Tech2 passes all stand-alone self-tests. Replace the Tech2 if it fails. If the Tech2 passes, proceed to step three. The CANdi module must be disconnected to run self-tests.
  • Page 81 5. Connect the CANdi module to the Tech2. Connect the system (Tech2 and CANdi module) to a vehicle and power on the Tech2. Verify that the LED on the CANdi module is flashing.
  • Page 82 General Motors Tech2 User Guide software version number. If there is no known problem with the Tech2 software, you will be directed to contact the hardware manufacturer. CANdi Module Repair If CANdi fails and the ACDelco Aftermarket Support Center (888-212-8959) has verified that it needs repair, you may contact a Bosch Diagnostics/Vetronix repair center to discuss the options available to you.
  • Page 83 General Motors Tech2 User Guide Updating the CANdi module: IMPORTANT: You must use a 32-megabyte (32-MB) PCMCIA card in the Tech2, not a 10- megabyte (10-MB) card. You must update the 32-MB PCMCIA card before connecting the CANdi module to the Tech2.

  • Page 84: Software

    D) Controller Area Network Diagnostic Interface (CANdi) IMPORTANT: Proper PCMCIA updates are required and are essential for successful vehicle diagnoses. Refer to the Programming Tech2 function under Tool Options, and the Tech2 PCMCIA Card in the TIS2Web subsection Tech2 Main Menu Five primary functions or “paths”...
  • Page 85 General Motors Tech2 User Guide Diagnostics Selecting Diagnostics from the Tech2 Main Menu and identifying the vehicle as shown below gives you access to four major systems: Powertrain, Body, Chassis, and Diagnostic Circuit Check. F0: DIAGNOSTICS ↓ Vehicle Identification: Select Model Year ↓...
  • Page 86 General Motors Tech2 User Guide System Selection Menu...
  • Page 87 General Motors Tech2 User Guide Service Programming System Selecting Service Programming System from the Tech2 Main Menu leads to selections shown below. F1: SERVICE PROGRAMMING (for remote programming only) ↓ Request Info. ↓ Continue (soft key) with Instructions ↓ Vehicle Identification: Salesmake(s) ↓...
  • Page 88 General Motors Tech2 User Guide View Captured Data Selecting View Captured Data from the Tech2 Main Menu results in the selections shown below. F2: VIEW CAPTURED DATA ↓ ↓ Capture Info Snapshot ↓ Select Items, Plot, Select Frame, AutoReverse, Stop, Auto Forward...
  • Page 89 After you select F0: Set Clock from the Tool Options menu and the Set Real-Time Clock menu appears, you can set the internal Tech2 real-time clock in two ways: 1. Use the up and down arrow keys to move the cursor to desired selection. Press [ENTER] to change the value.
  • Page 90 Because of the nature of the LCD (Liquid Crystal Display), you will experience some contrast variance. When the temperature of the Tech2 increases the display will brighten slightly. As the temperature of the Tech2 decreases, the display will darken. This variance is a characteristic of an LCD screen and should be considered normal operation.
  • Page 91 General Motors Tech2 User Guide Set Contrast Control screen F2: Set Units When you select the F2: Set Units option, a Set Units screen will appear. Use the up and down arrow keys to change the Current Units Setting from English to Metric or vice versa,...
  • Page 92 Set Units screen F3: Self Test Selecting F3: Self Test gives you access to the Tech2 Self Test menu screen, which will help you to verify that the Tech2 is functioning normally. Refer to Section VI - Troubleshooting for more information on this area.
  • Page 93 After you select F4: Programming Tech2, you can follow the on-screen instructions for downloading from a PC to the Tech2 scan tool via the RS-232 cable. Refer also to Software Download, Tech2 PCMCIA Card, and Tech2 Update Procedure later in this...
  • Page 94 Highlight the desired setting using the up or down arrow keys, then press [ENTER] to change the current mode. The Tech2 will default to the Disable mode after it has been powered off.
  • Page 95 General Motors Tech2 User Guide Set Communication By-Pass Mode screen F7: Set Language The F6: Set Language option enables you to set your language preference. F8: CANdi Diagnostics When you select F7: CANdi Diagnostics (a function limited to certain vehicles), the CANdi Diagnostics screen appears and you may perform a complete diagnosis of the CANdi module.
  • Page 96 F3: Programming Tech2 - This option provides instructions for downloading from a PC to the Tech2 scan tool. Due to a specific sequence of events in the evolution of the Tech2, this option duplicates the Programming Tech2 function of the Tool Options Menu.
  • Page 97 General Motors Tech2 User Guide Tool Controls Menu...
  • Page 98 General Motors Tech2 User Guide Hardware Menu...
  • Page 99 3. Once up to three parameters are selected, select Accept to see a graph of the data. Live Plot Live Plot is a Tech2 feature that allows data display parameters to be graphed in real time as it happens. The Live Plot function will allow up to three parameters to be plotted on a graph at one time.
  • Page 100 General Motors Tech2 User Guide 4. All of the features on the resulting graph are available while Live Plot is functioning. Pressing the More soft key leads to options that allow the user to zoom in and out on the plotted graph 50 frames at a time and change the min/max values of a highlighted data parameter.
  • Page 101 General Motors Tech2 User Guide “Accept” soft key on data screen...
  • Page 102 The value also can be assigned a positive or negative value. c. Selecting Learn and Learn All allows the Tech2 to learn the min/max values of a highlighted parameter or of all selected parameters. d. Selecting Restore Default restores the default min/max values of the highlighted parameter.
  • Page 103 General Motors Tech2 User Guide Live Plot Screen with selectable items...
  • Page 104 General Motors Tech2 User Guide Min/Max Adjustment screen...
  • Page 105 General Motors Tech2 User Guide “Learn” and “Learn All” soft keys on Min/Max Adjustment screen...
  • Page 106 General Motors Tech2 User Guide Live Plot “Resume” soft key...
  • Page 107 General Motors Tech2 User Guide Live Plot “Data List” soft key...

  • Page 108: Tis2Web

    General Motors Tech2 User Guide Data Snapshot Record screen NOTE: Be sure to update your Tech2 with the latest TIS2Web software as soon as it is available. TIS2Web TIS2Web is the Technical Information System (TIS) available through an online subscription service. It is a component-oriented service information delivery system that allows technicians to perform SPS, update the Tech2, and view Tech2 snapshot data in a Windows environment.
  • Page 109 When reinserting the card make sure that it fully seats into the Tech2. The PCMCIA card fits into Slot 1, which is closest to the screen. The second slot is identified as Slot 2.
  • Page 110 Why a larger memory card was needed: The memory card contains diagnostic and reprogramming applications, and space for vehicle calibrations. As the functions of the Tech2 expand, more space is needed for new diagnostic applications. For convenience, coverage of the 1991 to 2003 vehicles is being retained, and capacity is being added to accommodate upcoming model years.
  • Page 111 General Motors Tech2 User Guide 5. At the “Select Diagnostic Tool for Download” screen, select Tech2 and “Standard” to install the newest software on the scan tool. After confirming the selection, select Next. A message will appear indicating the PC is reading the contents of the diagnostic tool.
  • Page 112 General Motors Tech2 User Guide Tech2 Custom Update Procedure To perform a custom Tech2 update to backdate the scan tool or install different language software: 1. Connect the scan tool to the PC using the RS-232 cable. 2. Power up the scan tool using the AC power supply that came with the tool.
  • Page 113 • Press the Continue soft key when the snapshot trigger type screen is displayed. 7. Exit to the Main Menu, then power down and disconnect the Tech2 from the vehicle. Uploading the Snapshot to the PC After a snapshot has been successfully captured, perform the following steps to upload it from the scan tool to the computer.
  • Page 114 General Motors Tech2 User Guide Viewing the Snapshot After a snapshot has been uploaded (either from disk or the scan tool), it can be viewed and analyzed in a variety of ways. Replaying the Snapshot To replay a snapshot, use the row of icons in the lower left-hand corner of the screen. The selections and their functions are as follows: •...
  • Page 115 General Motors Tech2 User Guide • Below the first line is the number and name of the DTC. • Diagnostic test status tells whether the test ran and whether it passed or failed. • DTC status lists the DTC information. This is the status of the tests that were run and the related DTC messages that can be viewed by the technician.
  • Page 116 General Motors Tech2 User Guide Three-Graph Display To access the three-graph display mode: 1. Click the Display Graph (three) icon. 2. Click on the first graph icon at the top of the Graph Parameters window, then select a parameter from the list in the lower portion of the box. The parameter name will appear next to the first graph icon.
  • Page 117 When Capture Info is selected, the scan tool displays a menu selection that allows data from the control module to be stored to the Tech2 PCMCIA card, or to refresh the PCMCIA card with new data from a control module.

  • Page 118: The Service Programming System (Sps)

    General Motors Tech2 User Guide Printing a Snapshot Printing can be accomplished in three ways: 1. Using the “Print” command in the File menu. 2. Using the “Print screen dump” icon on the TIS2Web toolbar. 3. Using the “Print” icon on the snapshot toolbar.
  • Page 119 3. Transfer the selected data to the vehicle’s control module. NOTICE: Prior to performing SPS, it is important to heed the following precautions: • Using an outdated version could damage vehicle modules. The Tech2 and the computer must have the latest software. •...
  • Page 120 STEP 1: Obtain Vehicle Information (Request Info) from new ECU or an ECU to be programmed. With the Tech2 and vehicle both off, connect the Tech2 to the vehicle DLC. Power on the Tech2. At the Tech2 title screen, press [ENTER].
  • Page 121 General Motors Tech2 User Guide cannot be programmed. You would select Pass-Thru to perform SPS without disconnection from the vehicle or the computer.) • Under “Select Programming Process,” select Reprogram ECU or Replace and Program ECU, depending on whether you are reprogramming an existing module or replacing a module.
  • Page 122 2.12 The application will automatically initiate the download of the new calibration file to the Tech2, and a Transfer Data screen will track the progress of the download. 2.13 After the download is complete, a Program Controller screen will appear with instructions for connecting the Tech2 to the vehicle to complete the programming process.
  • Page 123 SPS using the Tech2 scan tool and TIS2Web software. Requesting Information At the Tech2 title screen, select Enter. To execute the SPS application, press F1 on the Tech2 keypad or highlight Service Programming System on the Main Menu screen, then press Enter.
  • Page 124 General Motors Tech2 User Guide At the Salesmake(s) screen, highlight one of the salesmakes, then select Enter. Note: Information entered incorrectly may result in programming errors.
  • Page 125 General Motors Tech2 User Guide At the Model Year(s) screen, highlight the appropriate year, then select Enter.
  • Page 126 General Motors Tech2 User Guide At the Vehicle Type(s) screen, highlight the vehicle type, then select Enter.
  • Page 127 General Motors Tech2 User Guide At the Vehicle Identification screen, highlight the vehicle type, then select Enter. Note: Some vehicle builds may have additional option screens.
  • Page 128 General Motors Tech2 User Guide There is a Tech2 procedure screen. Follow the on-screen instructions. Failure to do this may result in programming errors. After following on-screen instructions, press the Continue softkey.
  • Page 129 General Motors Tech2 User Guide The Existing ECU Data screen displays a VIN and software calibration number(s). It also asks if the VIN is correct. Select either Yes or No using the Tech2 keys. In this example, Yes is selected.
  • Page 130 General Motors Tech2 User Guide There is a Tech2 Existing ECU Data information screen. Follow the on-screen instructions: Turn off the ignition. Disconnect the Tech2 from the vehicle and connect it to the PC.
  • Page 131 General Motors Tech2 User Guide Programming After downloading information from the PC to the Tech2, return to the vehicle. At the Tech2 title screen, select Enter. To execute the SPS application, press F1 on the Tech2 keypad or highlight Service Programming System on the Main Menu...
  • Page 132 General Motors Tech2 User Guide The New Programming Data screen that appears next contains VIN and software calibration numbers. Verify that the VIN is correct, then press the Continue softkey.
  • Page 133 General Motors Tech2 User Guide At the next Tech2 SPS screen, follow the on-screen instructions: Turn off all power consuming devices. Turn the ignition on with the engine off. Make sure the battery is fully charged. Then press the Continue softkey.
  • Page 134 General Motors Tech2 User Guide “Please wait,” may briefly appear as programming begins. A percentage bar will track the progress of the download.
  • Page 135 General Motors Tech2 User Guide When programming is complete, the Programming Was Successful screen appears. Turn off the ignition and press the Continue softkey. NOTE: Error screens you may encounter are shown here.
  • Page 136 General Motors Tech2 User Guide Programming Failed Screen...
  • Page 137 General Motors Tech2 User Guide Tech2 SPS Error - No Communications with Vehicle instructional screen...
  • Page 138 General Motors Tech2 User Guide Performing Pass-Thru Programming Pass-thru programming allows the scan tool to remain connected to the computer and to the vehicle throughout the programming process. The vehicle must be in close proximity to the computer while using pass-thru programming.
  • Page 139 General Motors Tech2 User Guide Pass-Thru Programming Procedure Launch TIS2Web. From the TIS2Web main screen, select the Service Programming System icon. At the Select Diagnostic Tool and Programming Process screen: • Select Pass-Thru under “Select Diagnostic Tool.” • Under “Select Programming Process,” select Reprogram ECU or Replace and Program ECU, depending on whether you are reprogramming an existing module or replacing a module.

  • Page 140: Candi Module

    (OBD II compliant modules). A new diagnostic interface—the Controller Area Network diagnostic interface (CANdi) has been developed to address these needs. The CANdi module serves as an enhancement to the Tech2 and completes the interface necessary to communicate with future on-board computer systems.
  • Page 141 General Motors Tech2 User Guide Controller Area Network diagnostic interface (CANdi) module...

  • Page 142: Basic Operation

    VCI, cables and adapters. Installed, the CANdi module is fully compatible with current and past Tech2 software. The module powers up in a way that makes it transparent to the user. This allows the existing Tech2 software to be used with no changes when the CANdi module is installed.
  • Page 143 CANdi module connections Tech2 - VCI - Cable Test Before using the CANdi module, perform the Tech2 - VCI - cable test to verify the integrity of the system. IMPORTANT: To ensure accurate test results, you must install Tech2 software version 23.005 (August 2003) or later.
  • Page 144 1. Ensure the connection of the DLC (VCI) loopback adapter (Part Number 3000109) to the VCI module of the Tech2. 2. Navigate to the self test option: At the Tech2 Main Menu, select F3: Tool Options, and then choose Self Test.
  • Page 145 General Motors Tech2 User Guide The latest CANdi software version will be included in TIS2Web software and will be automatically downloaded to the PCMCIA card during a software update. Make sure you have the latest version of TIS2Web software on your computer.

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