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Diagnostic Parts, Diagnostic Accessories

Take a look at our selection of Test & Diagnostic products. We offer an industry leading 30-day Guarantee so that you can Shop with confidence! Select from the products or categories below to narrow the selection in Test & Diagnostic. Or give us the make, model, and year of your vehicle for a more customized list.

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20 out of 34 products in Test & Diagnostic
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Priced From: $109.61
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EQUUS CANOBD2 CAR READER FOR VEHICLES BUILT AFTER 1996

OBD II CAR READERS. Affordable little tool packs a big punch with its single screen display and system status LEDs! Read pending DTCs.... Read more

Priced From: $109.61
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Priced From: $73.95
ACTRON OBD-II POCKET SCANNER

OBD-II POCKET SCANNER. Reads and erases Diagnostic Trouble Codes (DTC). Retrieves both generic (P0) and manufacturer specific (P1) Diagnostic... Read more

Priced From: $73.95
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Priced From: $15.47
CUSTOM ACCESSORIES BATTERY AND ALTERNATOR TESTER

BATTERY AND ALTERNATOR TESTER. Easy-to-read LEDs show battery charge and alternator condition. Accurate to +/-0.1 volt. Hand held, easy... Read more

Priced From: $15.47
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Priced From: $215.12
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EQUUS OBD2 CAN CODE READER FOR VEHICLES BUILT AFTER 1996

OBD-II CAN CODE READER. Everything you need to diagnose check engine problems on one quick, easy to read screen! Tells you what's wrong... Read more

Priced From: $215.12
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Priced From: $14.61
DORMAN - UNIVERSAL CIRCUIT TESTERS

Dorman’s universal circuit testers fit right, are priced right and offer reliable, long-lasting function. Read more

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Priced From: $54.83
EQUUS TIMING LIGHT INDUCTIVE DIS / CONVENTIONAL

INDUCTIVE TIMING LIGHT. Slim, swivel barrel design. Patented skip circuitry tests up to 9,990 RPM. High-intensity Xenon bulb for clear... Read more

Priced From: $54.83
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Priced From: $28.60
KEEP IT CLEAN MULTIMETER

Keep It Clean is a well-recognized manufacturer in the aftermarket industry for having an extensive variety of automotive wiring, lighting... Read more

Priced From: $28.60
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On sale from: $17.37 $20.50
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MR GASKET HOT ROD STREET & STRIP PERFORMANCE CALCULATOR

MR GASKET HOT ROD STREET & STRIP PERFORMANCE CALCULATOR. Pre-programmed formulas for engine building and track tuning. Hand held, take... Read more

On sale from: $17.37 $20.50
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Priced From: $10.47
PERFORMANCE TOOL BATTERY ANTI-FREEZE TESTER

Performance Tool Battery Anti-Freeze Tester is a reliable and helpful tool created using premium quality materials. This tool provides... Read more

Priced From: $10.47
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Priced From: $20.38
PERFORMANCE TOOL COMPRESSION TESTER

Performance Tool Compression Tester. Install this Compression Tester from Performance Tool for a quick and accurate detection of leaks,... Read more

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Priced From: $67.16
ACTRON INDUCTIVE TIMING LIGHT WITH CHROME-PLATED METAL HOUSING

INDUCTIVE TIMING LIGHT WITH CHROME-PLATED METAL HOUSING. Effortless hookup! Molded inductive pick-up clamps over spark wire. Linear Xenon... Read more

Priced From: $67.16
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Priced From: $376.56
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ACTRON OBD SUPER AUTOSCANNER KITS

OBD SUPER AUTOSCANNER AND AUTOSCANNER KITS. The easiest, fastest way to diagnose and help you fix problems in OBD-compliant vehicles! The... Read more

Priced From: $376.56
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Priced From: $81.75
ACTRON TIMING ADVANCE ANALYZER

TIMING ADVANCE ANALYZER. Accurately checks basic ignition timing, vacuum advance, centrifugal advance and computer advance. Adjustable... Read more

Priced From: $81.75
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Priced From: $46.47
ACTRON UNIVERSAL SCAN TOOL CABLE

From easier detection to faster way in discerning your engine troubles, Actron Scan Tool has it all laid down for you. It is mainly intended... Read more

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Priced From: $151.46
EQUUS 4-FUNCTION DIGITAL TIMING LIGHT

4-FUNCTION DIGITAL TIMING LIGHT. Slim rotating handle allows easy access to hard to reach timing marks. Switches from 2-cycle distributorless... Read more

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Priced From: $40.85
EQUUS AUTO-RANGING DIGITAL MULTIMETER

AUTO-RANGING DIGITAL MULTIMETER. Perfect for quick, easy automotive and household electrical testing. Auto ranging scales eliminate need... Read more

Priced From: $40.85
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Priced From: $96.32
EQUUS DIGITAL ADVANCE TIMING LIGHT

DIGITAL ADVANCE TIMING LIGHT. Easier to use and much more accurate than conventional timing lights. Save money provides the valuable information... Read more

Priced From: $96.32
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Priced From: $81.66
EQUUS INNOCOMPRESS OHC PLUS COMPRESSION TESTER

INNOCOMPRESS OHC PLUS COMPRESSION TESTER. Quickly identify damaged or worn pistons, rings, valves and gaskets. 8-inch adapter for reaching... Read more

Priced From: $81.66
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Priced From: $16.07
EQUUS TEST LIGHT / CIRCUIT TESTER LED

CIRCUIT TESTER. Clear, ergonomic grip. Bright, high intensity LED bulbs. Sharp, stainless steel probe. Large alligator clip for easier... Read more

Priced From: $16.07
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Priced From: $383.59
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EQUUS UPGRADED CANOBD2 TOOL FOR VEHICLES BUILT AFTER 1996

C.A.N. OBD2 TOOL. Designed to retrieve OEM Enhanced and Transmission diagnostic codes in all OBD2 (1996 and newer) and some of the most... Read more

Priced From: $383.59
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Test & Diagnostic Equipment from JC Whitney help you test and diagnose electrical systems, leaks and other automobile problems accurately and quickly. Prevent expensive repairs, save time and labor with the help of our range of automotive Test & Diagnostics tools such as Computer Code Readers & Scanners, Multimeters & Analyzers, Testers and Tune Up Tools.

Test & Diagnostic tools such as Computer Code Readers help avoid unnecessary shop work and save time by detecting engine problems immediately. These Computer Code Readers retrieve ABS and engine trouble codes from the on-board computer and help you make your own repairs.

Choose from our range of Test & Diagnostic tools like Multimeters & Analyzers that are capable of testing electrical functions like starting, charging, ignition and full delivery system and can easily locate faulty wiring and components. Test & Diagnostic tools also feature a variety of Testers such as battery condition testers, fuel testers, pressure testers and thermometers. These Testers quickly enable you to identify the problem so that you can rectify it before it’s too late.

JC Whitney also stocks Test & Diagnostic tools like Compression Testers, Leakage Testers, Pocket Scanners, Code Scouts, Starter Tester, Portable Refractometer, Advance Timing Lights and much more from the leading brands such as Equus®, Prism, OTC, Innova®, Actron® and Autoxray®.

 

Test & Diagnostic


  
  Quick Links:
  Know Your Vehicle Electrical System Well with Test & Diagnostic Tools!
Types of Test & Diagnostic
  
 
Know Your Vehicle Electrical System Well with Test & Diagnostic Tools!

Test & Diagnostic tools from JC Whitney enable you to test, detect and resolve electrical problems in your vehicle accurately and quickly. They also prevent expensive repairs, save time and labor with all your automotive problems. You can choose from our wide range of precise Test & Diagnostic tools that also make excellent replacements for old, damaged or malfunctioning originals.

Brake Scanners help you understand why your brake warning light is on and identify what parts you'll need to fix the ABS related problem. They work on GM, Ford and Chrysler vehicles and come complete with handset, detachable vehicle cable, storage/carrying case and manual for effortless installation.

Computer Code Readers help you avoid unnecessary shopwork and save money by pinpointing engine problems immediately. These code readers help you make your own repairs by reading the vehicle computer codes indicated both audibly and visually.

Multimeters & Analyzers are great for electrical power and automotive/battery-operated applications. You can get Digital Multimeters that are perfect for measuring automotive and household electrical functions and temperature. These compact manual ranging multimeters with temperature functions also feature large easy to read digital display!

  
 
Types of Test & Diagnostic

Brake Scanners

Brake ScannersBrake Scanners like ABS Brakescan Diagnostic Tools help you identify the reason behind brake warning alerts and the parts you'll need to fix ABS related problems before you go to your dealer or mechanic. They display ABS trouble codes and definitions onscreen and are great for DIY mechanics! These Brake Scanners automatically retain most recent vehicle scan and are conveniently backlit for easy reading under all conditions.

Computer Code Readers & Scanners

Computer Code Readers & ScannersComputer Code Readers & Scanners include OBD II Computer Code Readers that help retrieve and replace trouble codes stored in your vehicle's on-board computer system. They are the easiest and best way to troubleshoot sensor affected codes in newer vehicles.

JC Whitney also stocks OBD-II Can Code Readers that offer everything you need to diagnose, check engine problems on one quick, easy to read screen! You can get great low prices on the world's best selling check engine tool with these Code Readers. They even work on all 1996-up OBD-II compliant vehicles.

You can also find Plastic Storage Cases for OBD-II Computer Code Readers, OBD-II C.A.N. Autoscanner Trilingual Code Readers, EZ-scan 6000 OBD-I and OBD-II Diagnostic Scanners, Car Readers, Codescout 700 Pocket Scan Code Readers, Computer Memory Savers, Pocket Scanners, EZ-scan 4000 OBD-II Diagnostic Scanners, C.A.N. OBD2 Tools and more at our huge collection.

Multimeters & Analyzers

Multimeters & AnalyzersMultimeters & Analyzers like Digital Multimeter and Engine Analyzers help you test starting and charging, ignition and fuel delivery systems. These compact tools perform all standard electrical tests for on-car or bench troubleshooting including tack, dwell, volts, ohm and diode.

You can also get AC/DC Clamp-On Multimeters that give you the convenience of a current clamp with the versatility of a Multimeter. They measure both AC and DC currents up to 400A and come in a compact size that makes it easy to measure in tight spots!

Digital Multimeters are also available that are perfect for quick, easy automotive and household electrical testing. They have a large digital display and Auto ranging scales that eliminate need to dial in correct range when taking measurements.

Testers

TestersTesters come in a variety of features and functions for all parts of your vehicle. Fuel Injection Testers for CIS-K-Jetronic Bosch Systems quickly, easily pinpoint problems in control pressure regulator or fuel distributors. Compression Testers also tests cars, trucks and other small engines.

Vacuum Gauge and Fuel Pump Testers test pressure up to 10 psi and vacuum up to 28? Hg on mechanical and electrical fuel pumps. Fuel Injection Pressure Test Kits help detect leaking injectors, fuel rail deterioration, malfunctioning fuel pump, check valves and more! You can also go for Battery Testers that plug into your vehicle's cigarette lighter to monitor battery and charging systems.

Cylinder Leakage Testers measure how well an engine cylinder can hold compressed air using shop air pressure. You can even choose from our vast range of Testers like Battery, Alternator and Starter Testers, Short Circuit Finders, Plug-In Electronic Digital Voltmeters, Remote Starter Switches, Battery Load Testers, Engine Oil Testers and more.

Tune Up Tools

Tune Up ToolsTune Up Tools like Dwell/Tach/Volt Analyzers are dedicated analyzers for American and imported vehicles. They check electronic ignition and charging/starter systems on all vehicles, especially older vehicles with conventional points systems. They come with a large, easy-to-read analog meter with zero adjust for maximum accuracy.

Inductive Timing Lights with Shockproof High-Impact Styrene Housing work with all American and imported 12-volt gas engines. You can also get Advance Timing Lights with advance dial that enables you to check base timing, mechanical advance or retard and electronic advance or retard applications.

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