Innova CAN OBD2 Owner's Manual
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Innova CAN OBD2 Owner's Manual

Enhanced obd2 code reader
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  • Page 2: Table Of Contents

    Table of Contents INTRODUCTION WHAT IS OBD? ................ YOU CAN DO IT! ................SAFETY PRECAUTIONS SAFETY FIRST! ................ ABOUT THE CODE READER VEHICLES COVERED ............. BATTERY REPLACEMENT ............. ADJUSTMENTS/SETTINGS AND DTC LIBRARY ....CODE READER CONTROLS CONTROLS AND INDICATORS ..........DISPLAY FUNCTIONS ............

  • Page 3: Introduction What Is Obd

    Introduction WHAT IS OBD? WHAT IS OBD? The Enhanced OBD2 Code Reader is designed to work on all OBD2 compliant vehicles. All 1996 and newer vehicles (cars, light trucks and SUVs) sold in the United States are OBD2 compliant. One of the most exciting improvements in the automobile industry was the addition of on- board diagnostics (OBD) on vehicles, or in more basic terms, the computer that activates the...

  • Page 4: You Can Do It

    You Can Do It! EASY TO USE - EASY TO VIEW - EASY TO DEFINE Easy To Use ..Connect the Code Reader to the vehicle’s test connector. Turn the ignition key "On.” Press the LINK button. Easy To View .

  • Page 5: Safety Precautions Safety First

    Safety Precautions SAFETY FIRST! SAFETY FIRST! To avoid personal injury, instrument damage and/or damage to your vehicle; do not use the OBD2 Code Reader before reading this manual. This manual describes common test procedures used by experienced service technicians. Many test procedures require precautions to avoid accidents that can result in personal injury, and/or damage to your vehicle or test equipment.
  • Page 6 Safety Precautions SAFETY FIRST! To prevent damage to the on-board computer when taking vehicle electrical measurements, always use a digital multimeter with at least 10 megOhms of impedance. Fuel and battery vapors are highly flammable. To prevent an explosion, keep all sparks, heated items and open flames away from the battery and fuel / fuel vapors.

  • Page 7: About The Code Reader

    About the Code Reader VEHICLES COVERED VEHICLES COVERED The Enhanced OBD2 Code Reader is designed to work on all OBD2 compliant vehicles. All 1996 and newer vehicles (cars and light trucks) sold in the United States are OBD2 compliant. Federal law requires that all 1996 and newer cars and light trucks sold in the United States must be OBD2 compliant;...

  • Page 8: Battery Replacement

    About the Code Reader BATTERY REPLACEMENT / ADJUSTMENTS/SETTINGS AND DTC LIBRARY On some Asian and European vehicles the DLC is located behind the “ashtray” (the ashtray must be removed to access it) or on the far left corner of the dash. If the DLC cannot be located, consult the vehicle’s service manual for the location.
  • Page 9 About the Code Reader ADJUSTMENTS / SETTINGS AND DTC LIBRARY Select Language: Sets the display language for the Code Reader to English, French or Spanish. Unit of Measurement: Sets the Unit of Measurement for the Code Reader’s display to USA or metric. Adjustments and settings can be made only when the Code Reader is NOT connected to a vehicle.
  • Page 10 About the Code Reader ADJUSTMENTS / SETTINGS AND DTC LIBRARY The Enter DTC screen displays. The screen shows the code “P0001”, with the “P” flashing. 2. Use the UP and DOWN buttons, as necessary, to scroll to the desired DTC type (P=Powertrain, U=Network, B=Body, C=Chassis), then press the DTC SCROLL button.
  • Page 11 About the Code Reader ADJUSTMENTS / SETTINGS AND DTC LIBRARY Selecting the Display Language 1. Use the UP and DOWN buttons, necessary, highlight Select Language in the MENU, then press the ENTER/FF button. The Select Language screen displays. currently selected display Language is highlighted.

  • Page 12: Code Reader Controls Controls And Indicators

    Code Reader Controls CONTROLS AND INDICATORS CONTROLS AND INDICATORS Figure 1. Controls and Indicators See Figure 1 for the locations of items 1 through 11, below. ERASE button - Erases Diagnostic Trouble Codes (DTCs), and “Freeze Frame” data from your vehicle’s computer, and resets Monitor status.
  • Page 13 Code Reader Controls CONTROLS AND INDICATORS DOWN button - When in MENU mode, scrolls DOWN through the menu and submenu selection options. When retrieving and viewing DTCs, scrolls down through the current display screen to display any additional data. UP button - When in MENU mode, scrolls UP through the menu and submenu selection options.

  • Page 14: Display Functions

    Code Reader Controls DISPLAY FUNCTIONS DISPLAY FUNCTIONS 11 12 13 Figure 2. Display Functions See Figure 2 for the locations of items 1 through 16, below. 1. I/M MONITOR STATUS field - Identifies the I/M Monitor status area. 2. Monitor icons - Indicate which Monitors are supported by the vehicle under test, and whether or not the associated Monitor has run its diagnostic testing (Monitor status).
  • Page 15 Code Reader Controls DISPLAY FUNCTIONS 7. DTC Display Area - Displays the Diagnostic Trouble Code (DTC) number. Each fault is assigned a code number that is specific to that fault. 8. Test Data Display Area - Displays DTC definitions, Freeze Frame data, and other pertinent test information messages.

  • Page 16: Onboard Diagnostics Computer Engine Controls

    Onboard Diagnostics COMPUTER ENGINE CONTROLS COMPUTER ENGINE CONTROLS The Introduction of Electronic Engine Controls Electronic Computer Control Systems make it possible for vehicle manufacturers to comply with the tougher emissions and fuel efficiency standards mandated by State and Federal Governments. As a result of increased air pollution (smog) in large cities, such as Los Angeles, the California Air Resources Board (CARB) and the Environmental Protection Agency (EPA)
  • Page 17 Onboard Diagnostics COMPUTER ENGINE CONTROLS The Basic Engine Computer Control System The Computer Control System consists of an on-board computer and several related control devices (sensors, switches, and actuators). The on-board computer is the heart of the Computer Control System. The computer contains several programs with preset reference values for air/fuel ratio, spark or ignition timing, injector pulse width, engine speed, etc.
  • Page 18 Onboard Diagnostics COMPUTER ENGINE CONTROLS Vehicle operating conditions are constantly changing. The computer continuously makes adjustments or corrections (especially to the air/fuel mixture and spark timing) to keep all the engine systems operating within the preset reference values. On-Board Diagnostics - First Generation (OBD1) With the exception of some 1994 and 1995 vehicles, most vehicles from 1982 to 1995 are equipped with some type of first generation On-Board Diagnostics.
  • Page 19 Onboard Diagnostics COMPUTER ENGINE CONTROLS Because OBD1 systems only detect failed components, the degraded components were not setting codes. Some emissions problems related to degraded components only occur when the vehicle is being driven under a load. The emission checks being conducted at the time were not performed under simulated driving conditions.
  • Page 20 Onboard Diagnostics COMPUTER ENGINE CONTROLS Powertrain Control Module (PCM) - The PCM is the OBD2 accepted term for the vehicle’s “on-board computer.” In addition to controlling the engine management and emissions systems, also participates in controlling the powertrain (transmission) operation. Most PCMs also have the ability to communicate with other computers on the vehicle (ABS, ride control, body, etc.).

  • Page 21: Diagnostic Trouble Codes (Dtcs)

    Onboard Diagnostics DIAGNOSTIC TROUBLE CODES (DTCs) OBD2 Drive Cycle - An OBD2 Drive Cycle is an extended set of driving procedures that takes into consideration the various types of driving conditions encountered in real life. These conditions may include starting the vehicle when it is cold, driving the vehicle at a steady speed (cruising), accelerating, etc.
  • Page 22 Onboard Diagnostics DIAGNOSTIC TROUBLE CODES (DTCs) Generic DTCs are codes that are used by all vehicle manu- facturers. The standards for generic DTCs, as well as their definitions, are set by the Society of Automotive Engineers (SAE). Manufacturer-Specific DTCs are codes that are controlled by the vehicle manufacturers.
  • Page 23 Onboard Diagnostics DIAGNOSTIC TROUBLE CODES (DTCs) DTCs and MIL Status When the vehicle’s on-board computer detects a failure in an emissions-related component or system, the computer’s internal diagnostic program assigns a diagnostic trouble code (DTC) that points to the system (and subsystem) where the fault was found.

  • Page 24: Obd2 Monitors

    Onboard Diagnostics OBD2 MONITORS If the conditions that caused the MIL to light are no longer present for the next three trips in a row, the computer automatically turns the MIL “Off” if no other emissions-related faults are present. However, the DTCs remain in the computer’s memory as a history code for 40 warm-up cycles (80 warm-up cycles for fuel and misfire faults).
  • Page 25 Onboard Diagnostics OBD2 MONITORS Non-Continuous Monitors The other eight Monitors are “non-continuous” Monitors. “Non- continuous” Monitors perform and complete their testing once per trip. The “non-continuous” Monitors are: Oxygen Sensor Monitor Oxygen Sensor Heater Monitor Catalyst Monitor Heated Catalyst Monitor EGR System Monitor EVAP System Monitor Secondary Air System Monitor...
  • Page 26 Onboard Diagnostics OBD2 MONITORS Misfire Monitor - This Monitor continuously checks for engine misfires. A misfire occurs when the air-fuel mixture in the cylinder does not ignite. The misfire Monitor uses changes in crankshaft speed to sense an engine misfire. When a cylinder misfires, it no longer contributes to the speed of the engine, and engine speed decreases each time the affected cylinder(s) misfire.
  • Page 27 Onboard Diagnostics OBD2 MONITORS Exhaust Gas Recirculation (EGR) Monitor - The Exhaust Gas Recirculation (EGR) system helps reduce the formation of Oxides of Nitrogen during combustion. Temperatures above 2500°F cause nitrogen and oxygen to combine and form Oxides of Nitrogen in the combustion chamber.
  • Page 28 Onboard Diagnostics OBD2 MONITORS Oxygen Sensor Heater Monitor - The Oxygen Sensor Heater Monitor tests the operation of the oxygen sensor’s heater. There are two modes of operation on a computer-controlled vehicle: “open- loop” and “closed-loop.” The vehicle operates in open-loop when the engine is cold, before it reaches normal operating temperature.
  • Page 29 Onboard Diagnostics OBD2 MONITORS Secondary Air System Monitor - When a cold engine is first started, it runs in open-loop mode. During open-loop operation, the engine usually runs rich. A vehicle running rich wastes fuel and creates increased emissions, such as carbon monoxide and some hydrocarbons.
  • Page 30 Onboard Diagnostics OBD2 MONITORS Name of Monitor Comprehensive Continuous Component Monitor Misfire Monitor 3 - similar Continuous (Type 1 and 3) conditions Misfire Monitor 3 - similar Continuous (Type 2) conditions Fuel System Monitor 3 - similar Continuous 1 or 2 conditions Catalytic Converter Once per...

  • Page 31: Preparation For Testing Preliminary Vehicle Diagnostic Worksheet

    Preparation for Testing PRELIMINARY VEHICLE DIAGNOSTIC WORKSHEET PRELIMINARY VEHICLE DIAGNOSTIC WORKSHEET The purpose of this form is to help you gather preliminary information on your vehicle before you retrieve codes. By having a complete account of your vehicle's current problem(s), you will be able to systematically pinpoint the problem(s) by comparing your answers to the fault codes you retrieve.
  • Page 32 Preparation for Testing PRELIMINARY VEHICLE DIAGNOSTIC WORKSHEET WHEN DID YOU FIRST NOTICE THE PROBLEM: ❏ Just Started ❏ Started Last Week ❏ Started Last Month ❏ Other: LIST ANY REPAIRS DONE IN THE PAST SIX MONTHS: PROBLEMS STARTING ❏ ❏ No symptoms Cranks, but will not start ❏...
  • Page 33 Preparation for Testing PRELIMINARY VEHICLE DIAGNOSTIC WORKSHEET AUTOMATIC TRANSMISSION PROBLEMS (if applicable) ❏ ❏ No symptoms Vehicle does not move when in gear ❏ Shifts too early or too late ❏ Jerks or bucks ❏ Changes gear incorrectly PROBLEM OCCURS ❏...

  • Page 34: Before You Begin

    Preparation for Testing BEFORE YOU BEGIN BEFORE YOU BEGIN The Enhanced OBD2 Code Reader aids in monitoring elec- tronic- emissions-related faults in your vehicle and retriev- ing fault codes related to mal- functions these systems. Mechanical problems such as low oil level or damaged hoses, wiring or electrical connectors can cause poor engine performance and may also cause a fault code to set.

  • Page 35: Vehicle Service Manuals

    Preparation for Testing VEHICLE SERVICE MANUALS VEHICLE SERVICE MANUALS Always refer to the manufacturer’s service manual for your vehicle before performing any test or repair procedures. Contact your local car dealership, auto parts store or bookstore for availability of these manuals.

  • Page 36: Using The Code Reader Code Retrieval Procedure

    Using the Code Reader CODE RETRIEVAL PROCEDURE CODE RETRIEVAL PROCEDURE Retrieving and using Diagnostic Trouble Codes (DTCs) for troubleshooting vehicle operation is only one part of an overall diagnostic strategy. Never replace a part based only on the DTC definition. Each DTC has a set of testing procedures, instructions and flow charts that must be followed to confirm the location of the problem.
  • Page 37 Using the Code Reader CODE RETRIEVAL PROCEDURE If the unit does not power on automatically when connected to the vehicle’s DLC connector, it usually indicates there is no power present at the vehicle’s DLC connector. Check your fuse panel and replace any burned-out fuses. If replacing the fuse(s) does not correct the problem, consult your vehicle’s repair manual to identify the proper computer (PCM) fuse/circuit, and perform any necessary repairs before...
  • Page 38 Using the Code Reader CODE RETRIEVAL PROCEDURE The Code Reader will automatically re-link to the vehicle’s computer every 15 seconds to refresh the data being retrieved. When data is being refreshed, message “One moment Auto – link in progress” is shown on the LCD display.
  • Page 39 Using the Code Reader CODE RETRIEVAL PROCEDURE The upper right hand corner of the display shows the number of the code currently being displayed, the total number of codes retrieved, the type of code (G = Generic; M = Manufacturer Specific), and whether or not the displayed code com- manded the MIL on.
  • Page 40 Using the Code Reader CODE RETRIEVAL PROCEDURE MONITOR NOT RUN STATUS – If the Code Reader’s LCD display shows a zero (indicating there are no DTC’s present in the vehicle’s computer memory), yellow LED is illuminated, it may be an indication that some of the Monitors supported by the vehicle have not yet run and completed their diagnostic testing.
  • Page 41 Using the Code Reader CODE RETRIEVAL PROCEDURE If the manufacturer for your vehicle is not listed, use the and DOWN buttons, as necessary, to select Other manufacturer and press the ENTER/FF button for additional DTC information. If the Manufacturer Specific definition currently displayed code is not available,...

  • Page 42: The Enhanced Main Menu

    Using the Code Reader THE ENHANCED MAIN MENU Retrieved information can be uploaded to a Personal Computer (PC) with the use of an optional “PC Link Kit.” For more information, call our service department. See SERVICE PROCEDURES on page 65 for more information. 12.
  • Page 43 Using the Code Reader THE ENHANCED MAIN MENU ABS DTCs are available for Chrysler/Jeep, Ford and GM vehicles only. Vehicle information is available for model year 2000 and newer OBD2-compliant vehicles only. The screen shown when the Code Reader enters the “enhanced” mode depends on the type(s) of DTC(s) returned during the code retrieval process: If no DTCs were retrieved, or only...

  • Page 44: Viewing Abs Dtcs

    Using the Code Reader VIEWING ABS DTCS If a Manufacturer specific DTC was retrieved, and the manufacturer selected for the code was not Chrysler, Jeep, Ford, Mazda, General Motors, Isuzu, Honda, Acura, Toyota or Lexus, the View Vehicle Information confirmation message displays. Press the ENTER/FF button to view vehicle...
  • Page 45 Using the Code Reader VIEWING ABS DTCS Reading ABS DTCs 1. Use the UP and DOWN buttons, as necessary, to highlight Read ABS DTCs, then press the ENTER/FF button. A "One moment please" message displays while the Code Reader retrieves the selected DTCs. If the Code Reader fails to link to the vehicle’s computer,...
  • Page 46 Using the Code Reader VIEWING ABS DTCS 3. If more than one code was retrieved press the DTC SCROLL button, as necessary, to display additional codes one at a time. Whenever the Scroll function is used to view additional codes, the Code Reader’s communication link with the vehicle’s computer disconnects.

  • Page 47: Viewing Enhanced Dtcs

    Using the Code Reader VIEWING ENHANCED DTCS Erasing ABS DTCs does not fix the problem(s) that caused the code(s) to be set. If proper repairs to correct the problem(s) that caused the code(s) to be set are not made, the code(s) will appear again as soon as the vehicle is driven long enough for the problem to recur.
  • Page 48 Using the Code Reader VIEWING ENHANCED DTCS The upper right hand corner of the display shows the number of the code currently being displayed, the total number of codes retrieved. The Diagnostic Trouble Code (DTC) and related code definition are shown in the lower section of the LCD display.
  • Page 49 Using the Code Reader VIEWING ENHANCED DTCS When View Enhanced DTCs is selected from the Enhanced Main Menu (and Ford/Mazda is selected, if prompted), the Ford/Mazda Enhanced menu displays. You may view DTCs for either the “Continuous Memory Test”, “KOEO (Key On Engine Off) Test” or “KOER (Key On Engine Running) Test.”...
  • Page 50 Using the Code Reader VIEWING ENHANCED DTCS In the case of long code definitions, or when viewing Freeze Frame data, a small arrow is shown in the upper/lower right-hand corner of the code display area to indicate the presence of additional information. Use buttons, as necessary, to view the additional information.
  • Page 51 Using the Code Reader VIEWING ENHANCED DTCS If the Code Reader fails to link to the vehicle’s computer, “Linking Failed” message shows on the Code Reader’s display. - Verify the ignition is ON, then press the ENTER/FF button to continue. 2.
  • Page 52 Using the Code Reader VIEWING ENHANCED DTCS To view additional enhanced DTCs, repeat steps 1 through 4, above. To exit the enhanced mode, use the UP and DOWN buttons, as necessary, to select Exit from the GM/Isuzu Enhanced menu, then press the ENTER/FF button.
  • Page 53 Using the Code Reader VIEWING ENHANCED DTCS I/M MONITOR STATUS icons are not displayed when viewing enhanced DTCs. In the case of long code definitions, or when viewing Freeze Frame data, a small arrow is shown in the upper/lower right-hand corner of the code display area to indicate the presence of additional information.
  • Page 54 Using the Code Reader VIEWING ENHANCED DTCS 1. Use the UP and DOWN buttons, as necessary, to highlight the desired option, then press the ENTER/FF button. A “One moment please” message displays, while the Code Reader retrieves the selected DTCs. If the Code Reader fails to link to the vehicle’s computer,...

  • Page 55: Viewing Vehicle Information

    Using the Code Reader VIEWING VEHICLE INFORMATION Whenever the Scroll function is used to view additional codes, the Code Reader’s communication link with the vehicle’s computer disconnects. To re-establish communication, press the LINK button again. 4. When the last retrieved DTC has been displayed and the DTC SCROLL button is pressed, the Code Reader returns to the Toyota/Lexus Enhanced menu.

  • Page 56: Erasing Diagnostic Trouble Codes (Dtcs)

    Using the Code Reader ERASING DIAGNOSTIC TROUBLE CODES (DTCs) The first time the Vehicle ID function is used, it may take several minutes to retrieve the information from the vehicle's computer. 3. When the retrieval process is completed, the vehicle ID information is shown on the Code Reader's display.
  • Page 57 Using the Code Reader ERASING DIAGNOSTIC TROUBLE CODES (DTCs) When DTCs are erased from the vehicle's computer memory, the I/M Readiness Monitor Status program resets the status of all Monitors to a not run "flashing" condition. To set all of the Monitors to a DONE status, an OBD2 Drive Cycle must be performed.

  • Page 58: I/M Readiness Testing

    Using the Code Reader I/M READINESS TESTING If the erase was not successful, an advisory message shows on the LCD display. Verify that the Code Reader is properly connected to the vehicle’s DLC and that the ignition is on, then repeat steps 2 and 3, above. Erasing DTCs does not fix the problem(s) that caused the code(s) to be set.
  • Page 59 Using the Code Reader I/M READINESS TESTING To comply with State and Federal Government regulations, vehicle manufacturers designed a series of special computer programs called "Monitors" that are programmed into the vehicle's computer. Each of these Monitors is specifically designed to run tests and diagnostics on a specific emissions-related component or system (Oxygen Sensor, Catalytic Converter, EGR Valve, Fuel System, etc.) to ensure their proper operation.
  • Page 60 Using the Code Reader I/M READINESS TESTING The Code Reader allows you to retrieve Monitor/System Status Information to help you determine if the vehicle is ready for an Emissions Test (Smog Check). In addition to retrieving Diagnostic Trouble Codes, the Code Reader also retrieves Monitor Run/Not Run status.
  • Page 61 Using the Code Reader I/M READINESS TESTING 2. YELLOW LED - Determine from the CODE RETRIEVAL PROCEDURE (page 34) which of the two possible conditions is causing the yellow LED to light. If a "PENDING" Diagnostic Trouble Code is causing the yellow LED to light, it is possible that the vehicle will be allowed to be tested for emissions and certified.
  • Page 62 Using the Code Reader I/M READINESS TESTING Take the vehicle to a professional to have it serviced. The problem(s) causing the red LED to light must be repaired before the vehicle is ready for an Emissions Test (Smog Check). On some vehicle models, the computer will store non-emission related DTCs.
  • Page 63 Using the Code Reader I/M READINESS TESTING 4. When a Monitor's Trip Drive Cycle is performed properly, the Monitor icon on the Code Reader’s LCD display changes from "flashing" to "solid,” indicating that the Monitor has run and finished its diagnostic testing. If, after the Monitor has run, the MIL on the vehicle's dash is not lit, and no stored or pending codes associated with that particular Monitor are present in the vehicle's computer, the...

  • Page 64: Glossary

    EPA – Environmental Protection Agency EVAP – Evaporative Emissions System Fault Code – See DTCs Freeze Frame – A digital representation of engine and/or emissions system conditions present when a fault code was recorded. FTP – Fuel Tank Pressure Generic Code – A DTC that applies to all OBD2 compliant vehicles.
  • Page 65 Glossary GLOSSARY OF TERMS AND ABBREVIATIONS Manufacturer Specific Code – A DTC that applies only to OBD2 compliant vehicles made by a specific manufacturer. MIL – Malfunction Indicator Lamp (also referred to as “Check Engine” light OBD1 – On-Board Diagnostics Version 1 (also referred to as “OBD I”) OBD2 –...
  • Page 66 Notes OBD2...

  • Page 67: Warranty And Servicing

    Warranty and Servicing LIMITED ONE YEAR WARRANTY The Manufacturer warrants to the original purchaser that this unit is free of defects in materials and workmanship under normal use and maintenance for a period of one (1) year from the date of original purchase.
  • Page 68 ® Innova Electronics Corp. 17291 Mt. Herrmann Street PRODUCT DESIGN & COPYRIGHT Fountain Valley, CA 92708 Printed in Taiwan Instruction MRP #93-0229 © 2008 Copyright © 2008 IEC. All Rights Reserved.

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