Test & Diagnostic Research Guide

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 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 & 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 & 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

Testers 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 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.