How to Diagnose Car Trouble With an Analyzer

An automotive obd scanner diagnostic analyzer, also known as a car diagnostic computer, can easily plug into an automobile's computer system in order to read the codes installed for each car's on-board computer. However, not every car diagnostic computer is the same. Check the model that you have purchased -- or are considering purchasing -- is compatible with your vehicle. Car diagnostic computers are useful to have in your toolbox since a lower-end model can cost less than $100, which is comparable cost-wise to having your car scanned at a service center.

1. Open the driver's side door of your car. Since 1996, vehicles produced for the American market have utilized a standardized On-Board Diagnostics (OBD) system. This means that every car manufactured since 1996 is readable by most diagnostic analyzers used by professional mechanics as well as those available to consumers. The D-style, plug-in connector for a diagnostic analyzer is usually located underneath the driver's console in or around the fuse box. Refer to the owner's manual for your vehicle to help locate the plug-in connector for the scanner.

2. Turn on the diagnostic car scanner and plug it into the D-style plug-in connector. Follow the prompts on the scanner and press the "Check" button. Different scanners will operate with slight variations. Turn the key in the ignition to the "Accessories" position. Wait two to five minutes for the scanner to read the code(s) displayed by the car. Some lower-end scanners may require you to connect the scanner to a computer via a USB port. According to CarsDirect.com, a Palm Pilot will often work to help read the code from the scanner.

3. Look up the diagnostic trouble code on the Internet if your code reader does not have the ability to display the problem. Some scanners that are more expensive will be able to tell you what the problem is as well as the code that goes along with the problem. gm tech 2

4. Clear the code from your car after making the necessary repair. If the codes or a "Check Engine Light" reappears after driving the vehicle a few miles, the problem has not been resolved and will need to be looked at again.

How to update maxidas DS708

First, should be have original Autel Maxidas DS708 Automotive Diagnostic System, PLS buy original DS708 Automotive Diagnostic System

When you connect DS708 with your car(power) at first time,

There will be an menu interface, and tell you the serial number and password about

Your DS708(just unique), pls save them!!! it is the key when updating!

then use the serial number and password, register a user name:
http://www.maxidas.com/member/service.aspx

after finished, you can download the latest versoin DS708 file,and uninstall the old version

install latest version to CF cards.

How to solve Honda CR-V and ABS communication failure

Honda CR-V 2 2007. 4L car with mileage about 97,000 km, whose ABS indicator light flashes intermittently. But after carried ABS road test, it is found that the ABS system is working properly.

Diagnosis:
1) Apply Honda HDS HIM to read the fault code, indicating DTC BL170--communication fault between instrument control module and ABS modulator control unit.
(NOTE: HDS is a powerful and affordable Honda diagnostic tool It is available for reading and decoding fault codes from control blocks memory.  For more information, click here: http://www.obd365.com/wholesale/honda-hds-him-diagnostic-tool-with-double-board.html)


2) Disconnect the pin B (36 cores) of instrument control module connector and the 26-pin of ABS modulator control unit.

3) Use a multimeter (such as: MST-2800B Intelligent Automotive Digital Multimeter)  to check terminal communication lines of 26-pin ABS modulator control unit and B-pin (36 cores) instrument control module connector. The result was that communication control lines were functioning.

4) As the figure shows, use a multimeter to check communication lines connecting 26-pin terminal of ABS modulator control unit and B-pin (36 cores) terminal of instrument control module connector, indicating that the communication control circuit is working. So it can be inferred that ABS modulator control unit has no problem.

5) According to the phenomenon, it can be determined as intermittent defect, which is usually caused by poor contact of bonding or plugs. Looking over the circuit diagram, the main bonding is G401, which tends to be normal. But the direct relevence with bonding is liquid level switch.

6) Finding that the braking fluid level is too low to turn off the liquid level switch, leading to disconnect the G401. As a result, ABS indicator light flashes intermittently.

7）After testing the liquid level switch, it works abnormally. Then change the liquid level switch and add braking fluid, the fault is completely cleared.
http://www.obd365.com

How to solve Toyota P0031 & Check Engine Light on

The Toyota Camry came back again for reparation, which had been repaired for several times because the CEL was on. Strangely enough, the car works well without other abnormalities.
Facing this thorny issue, this time I tended to apply V2014.6 Toyota Intelligent Tester 2 IT2 with Suzuki, the SUZUK company professional diagnostic tool for the Suzuki car. I first connected IT2 into the Powertrain / Engine and ECT / DTC, reading the error code P0031 (HO2S heater control circuit low), while the DTC's frame data found no error. According to the maintenance manual, the causes of P0031 are: A / F sensor heater circuit broken; A / F sensor heater (sensor1) fault; engine J/ B (EFI relay) fault; ECM failure, etc.

1) I disconnected C15A / F sensor connector to measure resistance of C15-1 and C15-2 terminal ( A / F sensor heater + B and HT terminals), reaches 2.6Ω, within the normal range (1.8 ~ 3.4Ω); moreover, resistance between C15-1 (HT) and C15-4 (AF-) terminals is infinite, normal. So A / F sensor failure can be excluded.
2) Then I turned on the ignition and measured voltage between the C15-2 (+ B) terminal and the bonding, which is 12.7V, normal. This will initially rule out the A / F sensor circuit fault.
3) According to the system circuit diagram, the resistance between C15-1 (HT) terminal and ECM C24-109 (HAlA) is 0.24Ω, and between C15-1 and the bonding is infinite, indicating that A / F sensor heater with ECM lines is normal. Considering that the fault occurred intermittently, I cleared the code and tested, however, CEL lighted again when the vehicle was driven on a relatively bumpy road.
4) Back to the shop, I found the code was still P0031 re-read by car diagnostic tool IT2. Then I entered Utility (Tools) / CheckMode, which will transfer ECM from normal mode to check mode, afterwards, shaking relevant components. When shaking J / B, CEL light up again. It turned up in several tests, so it can be determined as the J / B-related failures.
Finally, I removed J / B and pulled 1E, the plug was found in corrosion. Combined circuit diagram, 1E-7 is the very power line of A / F sensor heater. I dealt with the corrosion, the fault was completely cleared after repeated test.
http://www.obd365.com/wholesale/digimaster-3-digimaster-iii-original-odometer-correction-master-with-980-tokens-2253.html