Untitled - Innova

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Scan Tool Controls DISPLAY FUNCTIONS If “01” is a “Pending” code, there may or may not be “Freeze Frame” data stored in memory. 14. Code Enumerator - Indicates the total number of codes retrieved from the vehicle’s computer. 10 OBD2
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) set new regulations and air pollution standards to deal with the problem. To further complicate matters, the energy crisis of the early 1970s caused a sharp increase in fuel prices over a short period. As a result, vehicle manufacturers were not only required to comply with the new emissions standards, they also had to make their vehicles more fuel-efficient. Most vehicles were required to meet a miles-per-gallon (MPG) standard set by the U.S. Federal Government. Precise fuel delivery and spark timing are needed to reduce vehicle emissions. Mechanical engine controls in use at the time (such as ignition points, mechanical spark advance and the carburetor) responded too slowly to driving conditions to properly control fuel delivery and spark timing. This made it difficult for vehicle manufacturers to meet the new standards. A new Engine Control System had to be designed and integrated with the engine controls to meet the stricter standards. The new system had to: • Respond instantly to supply the proper mixture of air and fuel for any driving condition (idle, cruising, low-speed driving, high-speed driving, etc.). • Calculate instantly the best time to “ignite” the air/fuel mixture for maximum engine efficiency. • Perform both these tasks without affecting vehicle performance or fuel economy. Vehicle Computer Control Systems can perform millions of calculations each second. This makes them an ideal substitute for the slower mechanical engine controls. By switching from mechanical to electronic engine controls, vehicle manufacturers are able to control fuel delivery and spark timing more precisely. Some newer Computer Control Systems also provide control over other vehicle functions, such as transmission, brakes, charging, body, and suspension systems. OBD2 11
Page 2 and 3: Table of Contents INTRODUCTION WHAT
Page 4 and 5: You Can Do It! EASY TO USE - EASY T
Page 6 and 7: Safety Precautions SAFETY FIRST! To
Page 8 and 9: About the Scan Tool BATTERY REPLACE
Page 10 and 11: Scan Tool Controls DISPLAY FUNCTION
Page 14 and 15: Onboard Diagnostics COMPUTER ENGINE
Page 16 and 17: Onboard Diagnostics COMPUTER ENGINE
Page 18 and 19: Onboard Diagnostics DIAGNOSTIC TROU
Page 20 and 21: Onboard Diagnostics DIAGNOSTIC TROU
Page 22 and 23: Onboard Diagnostics OBD2 MONITORS N
Page 24 and 25: Onboard Diagnostics OBD2 MONITORS t
Page 26 and 27: Onboard Diagnostics OBD2 MONITORS e
Page 28 and 29: Onboard Diagnostics OBD2 MONITORS P
Page 30 and 31: Preparation for Testing PRELIMINARY
Page 32 and 33: Preparation for Testing PRELIMINARY
Page 34 and 35: Preparation for Testing VEHICLE SER
Page 36 and 37: Using the Scan Tool CODE RETRIEVAL
Page 42 and 43: Using the Scan Tool VIEWING ENHANCE
Page 52 and 53: Using the Scan Tool VIEWING ABS DTC
Page 54 and 55: Using the Scan Tool VIEWING SRS DTC
Page 56 and 57: Using the Scan Tool ERASING DIAGNOS
Page 58 and 59: Using the Scan Tool I/M READINESS T
Page 60 and 61: Using the Scan Tool I/M READINESS T
Page 62 and 63:
Using the Scan Tool I/M READINESS T
Page 64 and 65:
Live Data Mode CUSTOMIZING LIVE DAT
Page 66 and 67:
Live Data Mode RECORDING (CAPTURING
Page 68 and 69:
Live Data Mode RECORDING (CAPTURING
Page 70 and 71:
Live Data Mode LIVE DATA PLAYBACK I
Page 72 and 73:
Additional Tests SPECIAL TEST MENU
Page 74 and 75:
Additional Tests SPECIAL TEST MENU
Page 76 and 77:
Additional Tests VIEWING VEHICLE IN
Page 78 and 79:
Additional Tests ADJUSTMENTS AND SE
Page 80 and 81:
Page 82 and 83:
Page 84 and 85:
Generic (Global) OBD2 PID List Tool
Page 86 and 87:
Generic (Global) OBD2 PID List Tool
Page 88 and 89:
Vehicle Applications - ABS ABS APPL
Page 90 and 91:
Vehicle Applications - ABS GM BUICK
Page 92 and 93:
Vehicle Applications - ABS Toyota L
Page 94 and 95:
Vehicle Applications - SRS Ford FOR
Page 96 and 97:
Vehicle Applications - SRS PONTIAC
Page 98 and 99:
Glossary GLOSSAY OF TERMS AND ABBRE
Page 100 and 101:
Notes 98 OBD2
Page 102 and 103:
Notes 100 OBD2
Page 104:
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Untitled - Innova

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