This site and it’s partner site obd-diagnostics.com.au  the site’s objective is to focus heavily on the hard to get PDF DIY fault/trouble code diagnostic information primarily for Australia and New Zealand produced cars. We also specialise in hard to find PDF workshop manual sections for specific jobs plus complete workshop manuals including manual/automatic transmission manuals.

Check Engine Light on?

Don’t know how to get the codes out? Your search for help may be over by searching this site’s database. Most vehicles display their Engine and Auto Transmission codes (DTC’s Diagnostic Trouble Codes) by flashing a light on the dashboard of the car, called a Check Engine Light (CEL) or a Malfunction Indicator Lamp (MIL). Using jumper wires at the diagnostic connector to flash codes has been built in by the car manufacturers to ensure people without a Scan Tool or Code Reader can still diagnose the vehicle faults by reading the codes. Some vehicles such as Early Ford’s, Mazda’s, Nissan’s, Mitsubishi’s and Hyundai’s, plus some Kia vehicles do not display codes on a flashing dash light. These vehicles give their code signals directly from the diagnostic connector.

You will need to use an LED tester (available from us – go to the tools page) to read the codes from these vehicles. The downloadable Diagnostic Help Data Sheets are designed to guide you through the process of diagnosing faults quickly & easily. Rather than getting hold of a shop manual, trying to find your way through the maze of information which can be at times confusing, the Data Sheets take that problem away by giving you the information you need to get the job done & you get that wonderful warm feeling of mastery over the electronic world.

What is “On Board Diagnostics”? On-Board Diagnostics, or OBD, in an automotive context, is a generic term referring to a vehicle’s self-diagnostic and reporting capability. OBD systems give the vehicle owner or a repair technician access to state of health information for various vehicle sub-systems. The amount of diagnostic information available via OBD has varied widely since the introduction in the early 1980′s of on-board vehicle computers, which made OBD possible. Early instances of OBD would simply illuminate a malfunction indicator light, or MIL, if a problem were detected, but would not provide any information as to the nature of the problem. Modern OBD implementations use a standardized fast digital communications port to provide myriad realtime data in addition to a standardized series of diagnostic trouble codes, or DTCs, which allow one to rapidly identify and remedy malfunctions within the vehicle. Learn more