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OBD II, what does it mean?
Important information you need to know
Generic OBD II diagnostic trouble codes for vehicles model year 1996 or newer.
U.S. Federal Government regulations require that all light duty vehicles (cars, vans and trucks whose gross weight is 8,500 lbs. or
less) manufactured for sale in the U.S. beginning January 1, 1996 be OBD II compliant. In California the GW is extended to 14,000
pounds. Some vehicle manufacturers converted some of their engines to the OBD II standard beginning in model year 1994.
If you have a 1994 or 1995 light duty vehicle...
check the Vehicle Emissions Control Information decal located under the hood of your vehicle. Typical locations for this decal are:
a shock tower, an engine valve cover, a wheel well, the fire wall, the underside of the hood, or a radiator support. On this label
look for the “OBD II” acronym in the statement of emissions compliance. Make sure to look for the Roman numeral “II”.
Actron Mfg. Co.
Enhanced OBD II diagnostic trouble codes (vehicle manufacturer specific codes).
Within each of the categories of DTC’s (diagnostic trouble codes), the categories being Powertrain, Body, Chassis, and UART, there
exists both generic and enhanced codes. The majority of our scan tools including the CP9135 OBD II AutoScanner™ (with the
exception of the 9640 Professional Enhanced Scan Tool ) are designed and sold as generic OBD II tools. They are guaranteed to
retrieve and display generic codes.
Under some circumstances, the manufacturer will define and implement enhanced codes. Enhanced codes may be displayed on
a generic scan tool. Their definitions will vary from manufacturer to manufacturer solely at their discretion, and are not defined
by our generic OBD II tools. Enhanced codes are easily distinguished. The first numeric character of an enhanced code will be a
“1” as opposed to a “0” or a “2”, i.e., P0443 or P2443 is generic, P1443 is enhanced.
15825 Industrial Parkway
Cleveland, Ohio
Technical help hotline: 1-800-228-7667
1982 - 1993
GM cars and light trucks:
CP9001 CodeScanner™
1983 - 1995
Ford cars and light trucks:
CP9015 CodeScanner™
1984 - 1995
No tools needed, see service manual
1985 - 1992
CP9025 CodeScanner™
1984 - 1992
CP9025 CodeScanner™
1983 - 1992
CP9025 CodeScanner™
1996 and newer:
All makes
CP9135 OBD II AutoScanner™
but the car “just doesn’t run right”, you may need to take the next step in diagnostic equipment… a Scan Tool. A scan tool will do
everything the code scanner will do, and much more, including: read & erase codes, display live diagnostic data, record and
playback live diagnostic data, other tests allowed by the vehicle maker.
Scan Tools
If the Check Engine light is on, your vehicle is telling you there is a problem that is affecting performance, gas mileage, or
emissions. You need to know why the light is on, how to fix it and how to turn the light off. Code Scanners “read and reset”
the diagnostic trouble codes stored in the vehicle’s computer memory.
1996 and newer
All makes
CP9145 SUPER AutoScanner™
1984 and newer
GM cars and light trucks
CP9145 plus CP9127 kit
1984 and newer
Ford cars and light trucks
CP9145 plus CP9128 kit
1989 and newer
Chrysler cars and light trucks
CP9145 plus CP9129 kit
'84-'95 GM, '84-'95 Ford, '89-'95 Chrysler
CP9150 SUPER AutoScanner™ Kit
1996 and newer - all makes
Other accessories: Chrysler LH cable - CP9130 Ford MECs cable - CP9131
Resistance sensors:
coolant temperature, air charge, intake air temperature, throttle
position, mass air flow and manifold absolute pressure
Voltage sensors: oxygen sensor and others
Frequency sensors: mass air flow, manifold absolute pressure and others
Hall Effect sensors: camshaft position, crankshaft position and others
Sensor Simulator and Tester tests sensors, and can simulate sensors as well.
*Available by special order. See sales associate for details.
Besides sensors, you may need to test circuits for voltage, resistance, and continuity. The most versatile tool for this job is the
Digital Multi-Meter, or DMM for short.
Sensor Testers
Sensors are the “eyes and ears” for the on-board computer. They tell the computer what’s happening in the engine.
Sensors can be expensive to replace, so it’s a good idea to test them before replacing them. Ignition module and sensor
testers test all types of vehicle sensors.
Our most economical DMM, featuring several ranges of DC volts, AC volts, Ohms, and amps.
Featuring several ranges of DC volts, AC volts, Ohms, and amps, plus UL listing.
DC volts, AC volts, DC amps, Ohms and battery test functions plus data hold feature.
Adds the automotive-specific functions of RPM and dwell. These functions are measured from
the primary side of the ignition coil and are useful on distributor equipped vehicles.
All of the features of the CP7676 plus performs continuity test and has protective hoster.
Includes all of the features of the CP7677 plus an automotive duty cycle function,
Our top of the line DMM with frequency & temperature scales, autoranging, bar graph display,
data hold and an inductive pickup for RPM measurement.
Mini Circuit Tester quickly is our most basic circuit tester; designed for 12 volt vehicle
electrical systems. It quickly and easily locates hot circuits.
LED Circuit Tester represents the next level in circuit testers. Its 4 LED's illuminate at
4, 9, 12, and 13 volts respectively, allowing simplified determination of
approximate circuit voltage level.
Twin 5' Jumper Leads are equipped with high visibility color coded (red and black)
coiled leads. Booted alligator clips are permanently attached to each end.
Twin 5' Multimeter Lead Set are equipped with high visibility color coded (red and
black) coiled leads. Multimeter probes with standard banana plugs are permanently
attached to the coiled leads. Attachments allow them to be used as a jumper lead set.
Fuel delivery is one of the three essential ingredients to make an engine run (the other two being air and spark). The fuel injection
system uses a pump to move the fuel from the gas tank to the engine, and one or more injectors to spray it into the cylinder
where it is burned.
Fuel System
Circuit Testers & Leads
The tools listed below may be called out in various service manual test procedures. Like multi-meters, circuit testers and
test leads are among the basic tools required for simple electrical testing, as well as troubleshooting some electronic
systems and components.
Fuel Pressure Tester Kit includes the fittings to connect to the majority of multi-port
fuel injection systems. If your fuel system is not covered, optional adapters are
probably available for your application, see store associate for details.
Fuel Pressure Tester Kit with 0 - 60 PSI gauge is designed specifically for the low
operating pressures encountered in the General Motors Throttle Body Injection
(TBI) system used on many of their vehicles produced in the 1980's and 90's.
Fuel Injector & Harness Tester not only has the capability of pulsing the injectors,
but can also read the signal from the injector harness as supplied by the
vehicle computer. Includes adapters for most common injector connectors.
*Available by special order, see store associate for details.
Ignition Module and Sensor Tester will completely test the ignition modules used on
many distributor equipped vehicles. The CP9087 includes an instruction manual that covers
test procedures for GM, Ford, Chrysler, Toyota, Honda and Nissan ignition modules.
The CP9087 also tests most computer sensors.
Ignition Module/KV Tester tests ignition modules & coils on both distributor and Distributorless
Ignition System (DIS) vehicles. It also gives you a way to peak spark plug firing voltage on a
running engine as well as full secondary ignition system diagnostic capability.*
Secondary Ignition Tester is a great way to do quick checks on the
secondary ignition system, including peak KV measurements.*
*Available by special order, see store associate for details.
Even though ignition timing isn’t adjustable on most modern vehicles, some diagnostic procedures require a timing light to verify
that ignition timing is within specifications.
Timing Lights
Ignition Testers
Spark is one of the three essential ingredients to make an engine run (the other two being fuel and air). “Back in the day”,
ignition systems were simple: a coil, a distributor and a set of points. For the most part, those days are gone forever.
Now we have electronic ignition both with, and without a distributor.
DC Power Timing Light is our most economical timing light. It's powered from the vehicle's 12
volt battery. Connects directly to the spark plug using the adapter. If your vehicle's spark plug is
easily accessible & not recessed in a "spark plug well", this timing light does the job nicely.
Inductive Timing Light is economical with an inductive spark plug pickup. Simply clamp the
inductive pickup around the spark plug wire; no adapters are required. The inductive pickup
makes it simple to connect to spark plugs that are recessed in a "spark plug well".
Chrome Inductive Timing Light, similar to CP7504 w/heavy duty chrome case & detachable leads.
Timing Advance Analyzer is our best timing light. This timing light provides all the features of the
CP7515 and adds the capability of checking both "base" and "advanced" timing.
On almost all automotive engines, ignition timing changes with engine speed and/or
load. Initial or base timing is only a starting point. If vehicle troubleshooting procedures have
directed you to check timing advance calibrations, this is the tool for the job.
Stem Compression Tester is an easy to use, economical compression tester. This tester
is good for spark plugs that are not recessed in deep wells in the cylinder head.
Compression Tester Kit is complete including heavy duty hose & adapters to fit 14mm &
18mm spark plug threads found on all modern gasoline engines in light duty vehicles.
Professional Compression Tester Kit is our best & most complete kit. In addition to the
14mm & 18mm adapters, it includes 10mm and 12mm adapters. These adapters allow
you to test compression in motorcycle and other small engine applications.
Remote Starter Switch is an easy to use remote starter that offers a power tool type
trigger switch, heavy-duty neoprene leads, and alligator clips with insulated boots
All gasoline engines develop vacuum (negative pressure) in the intake manifold. Like compression, vacuum is a
good measure of the engine’s mechanical condition. Vehicle manufactures make use of engine vacuum to drive
many different devices such as vacuum, EGR valves, PCV valves & ventilation dampers, etc.
All internal combustion engines need good compression in order to run properly. If the valves and piston rings aren’t in
good condition, they can’t seal the combustion chamber when the spark plug fires the air/fuel mixture. Compression
testing is done by replacing each spark plug (one at a time) with a compression gauge. The engine is then cranked to build
up pressure. Inconsistent pressure readings between cylinders can be a sign that a problem exists.
Vacuum & Pressure Tester Kit checks engine vacuum and includes the following:
3½" diameter, 0 - 30", 0 - 10 psi compound gauge, 24" hose, miscellaneous adapters
Hand Vacuum Pump provides a source of vacuum for checking vacuum-controlled
devices. Its built in 0 - 30" gauge can also be used as a stand alone gauge for
checking engine vacuum. Includes: rugged steel handle frame, solid brass cylinder,
cylinder head and piston, 24" hose with tapered hose adapter,
cushioned handle grips, barbed brass hose fitting
Includes CP7830 and CP7840 Brake Bleed Kit
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