Two factors will show if your vehicle is definitely OBD II equipped: 1) There will be an OBD II connector as shown below, and 2) There will be a note on a sticker or nameplate under the hood: 'OBD II compliant'. Pin 2 - J1850 Bus+ Pin 4 - Chassis Ground Pin 5 - Signal Ground Pin 6 - CAN High (J-2284) Pin 7 - ISO 9141-2 K Line. AlfaOBD is a software for the diagnostics of the vehicles produced by Fiat Chrysler Automobiles (FCA) group. Fiat / Alfa Romeo / Lancia cars produced in 1994-2017, and Chrysler / Dodge / Ram / Jeep cars of model years 2005-2017 are supported. So I Down loaded the Free Subaru Logger, the OBD-II to serial connector (Came with AccessPort), and I have a laptop (Under repair so I have yet to use them.) So when using AccessPort having that cable between my legs is just annoying (using the live boost option), and will be even more annoying when I have a laptop connected to it. What is an OBD-II Connector? OBD stands for Onboard Built-in Diagnosis.As the name suggests it is a diagnosis system that is built into all modern cars (after 1996) which has a computer based application that monitors the performance of your car through your speed, mileage, fuel emission data etc.
Thanks for the tips. The twisting of the pairs is one concern I had since I bought the connector off of eBay and they wires are sheathed. I did a point to point check to make sure the pin in the 4 pin connector are going to the correct OBD slot, and all is good there.
Below are some of the standard adapters we offer.Don't see what you need? Check out our Custom Cables page or give us a call at 310-793-2410. We can custom make nearly any configuration to your specifications.
J1939 Female to OBD2 Female | This adapter mates with a J1939 vehicle and allows an OBD2 style tester connection to fit. The J1939 +/- data lines are connected to the CAN +/- lines, and the power and ground lines are also connected. The most common application is to connect a GPS Tracker that is meant for an OBD2 vehicle to a vehicle that has the 9-pin round Deutsch connector. $37.50 |
J1939 Male to OBD2 Male | This adapter cable allows a J1939 Scan Tool (a scanner designed to plug into the round J1939 9-pin Deutch connector on a vehicle) to be used with a J1939 equipped vehicle that uses a standard OBD2 style connector. $37.50 |
J1939 Type 2 to Type 1 Adapter | A standard J1939 Connector (Type 1) will not plug into a Type 2 (Green) connector. This adapter allows devices which are capable of reading the higher data rate of Tyoe 2 to connect. $57.50 |
RP1226 to J1939 Type 1 | Allows an E-Log or other device with a Type 1 (black) J1939 connector to plug into the RP1226 Jack $57.50 |
RP1226 Y Cable | Allows 2 devices to plug into the RP1336 Jack $49.50 |
RP1226 to J1939 Type 2 | Allows an E-Log or other device with a Type 2 (green) J1939 connector to plug into the RP1226 Jack $57.50 |
J1939 Type 2 Female to OBD2 Female | This adapter mates with a Type 2 (Green connector) J1939 vehicle and allows an OBD2 style tester connection to fit. The J1939 +/- data lines are connected to the CAN +/- lines, and the power and ground lines are also connected. $52.50 |
J1939 Type 1 Extender Cable | Six foot Extender, Type 1 Female to Type 1 Male. $75.00 |
J1939 4-slot to JamNut Mount Adapter | Allows a cable with a standard mount connector to be mounted to a truck which requires a Jam Nut style connector $37.50 |
J1708 F to OBD2 F | This adapter allows a GPS tracker designed for an OBD2 connector to connect to vehicle with a round 6-pin J1708 connector. $37.50 |
J1708 9F to 6M Pin | Newer vehicles with the 9-pin connectors often still have older J1708 data on them. This adaper allows an older style 6-pin device to connect to a newer 9-pin connector. $37.50 |
J1708 9M to 6F Pin | Use this adapter to connect a 9-pin tester capable of using J1708 to a vehicle with a 6-pin connector. $37.50 |
J1708 ALDL to 6 Pin | Some J1708 vehicles use the older style GM ALDL connector. This adapter converts the ALDL J1708 connection to a standard J1708 6-pin connector. $37.50 |
OBD2 Y Adapter | Connect 2 OBD2 devices to your OBD2 Diagnostic port. $25.00 |
J1939 Y Adapter | Connect 2 J1939 9-pin devices to your J1939 Diagnostic port. $56.00 |
J1939 Type 2 Y Adapter | Connect 2 J1939 Type 2 9-pin devices to your J1939 Type 2 Diagnostic port. $64.00 |
J1939 Type 2 to Type 1/2 Y Adapter | Connect A Type 1 J1939 and a Type 2 9-pin device to your J1939 Type 2 Diagnostic port. $61.00 |
J1939 Quad Adapter | Connect 4 J1939 9-pin devices to your J1939 Diagnostic port. $104.00 |
CAT to J1939 Adapter | Connect a standard J1939 device to a CAT system. $37.50 |
CAT Y Adapter | Connect 2 CAT 9-pin devices to your CAT Diagnostic port. $61.00 |
CAT to CAT and J1939 Y Adapter | Connect a CAT 9-pin device and a standard J1939 Device to your CAT Diagnostic port. $61.00 |
CAT Y15 Adapter | Connect a 15 pin D Connector to your CAT without using up the Diagnostic port. $61.00 |
CAT Y to DB15 Male Adapter | Connect a 15 pin D Connector to your CAT without using up the Diagnostic port. $61.00 |
CAT to OBD2 Adapter | Connect a standard OBD2 device to a CAT diagnostic port. $37.50 |
CAT 14-pin to J1939 9-pin Adapter | Connect a standard J1939 device to a CAT 14-pin diagnostic port. $62.00 |
CAT 14-pin Y cable to CAT 14 and J1939 9-pin Adapter | Connect a standard J1939 device to a CAT 14-pin diagnostic port with a pass-thru CAT 14-pin Y. $84.00 |
J1708 Y Adapter | Connect 2 J1708 6-pin devices to your J1708 Diagnostic port. $49.00 |
J1708 to J1708 and J1939 Y Adapter | Connect a J1708 6-pin device and a J1939 9-pin device to your J1708 Diagnostic port. $49.00 |
Volvo M-M Adapter | Beginning in 2013, Volvo has a new OBD2 Style diagnostic connector for a Volvo chassis with a Volvo engine. This adapter allows the use of a standard J1939 tester to connect to the new connector style. $37.50 |
GMC Top Kick M-M Adapter | The GMC Top Kick with the Cummins engine uses an OBD2 style connector for diagnostics, but uses J1708 data. The Top Kick with the CAT engine uses J1939 Data. This adapter allows a J1939/J1708 tester with the standard J1939 9-pin connecter to hook to the Top Kick. $37.50 |
Hino Truck M-M Adapter | This adapter allows a J1939 tester with the standard J1939 9-pin connecter to hook to the Hino with the OBD2 style connector. $37.50 |
Allison to J1939 Adapter | Allison (and some Detroit Diesel) vehicles using the 16-pin OBD2 style diagnostic connector use pin 4 for Ground instead of pin 5. This adapter allows a standard J1939 accessory (GPS unit, tester, etc) using the 9-pin plug to connect to the Allison diagnostic port. $37.50 |
CAT J1939 Adapter | CAT Industrial uses a non-industry standard pinout for their round 9-pin diagnostic connectors. This adapter allows a standard J1939 accessory or piece of test equipment to be connected to the CAT equipment. $37.50 |
CAT J1708 Adapter | CAT Industrial uses a non-industry standard pinout for their round 9-pin diagnostic connectors. This adapter allows a standard J1708 accessory or piece of test equipment to be connected to the CAT equipment. $37.50 |
GM ALDL OBD2 97-71138 | GM Adapter for ALDL testing. $75 |
Polaris Slingshot Adapter | The Polaris Slingshot uses an 8 pin diagnostic connector instead of the standard 6 pin flat connector. $20.00 |
Polaris Slingshot ScanGauge D Adapter | Allows the ScanGauge D to attach to the Slingshot. $37.50 |
OBD2 to Marine 6-pin Adapter | Allows an OBD2 style device or scanner to connect with a 6-pin marine connector. $25.00 |
J1939 to Marine 6-pin Adapter | Allows a J1939 scanner or other device to connect with a 6-pin marine connector. $40.00 |
DB15M to HD15F Adapter | Changes from low to high density DB 15 connector. $10.00 |
DB15F to HD15M Adapter | Changes from low to high density DB 15 connector. $10.00 |
Cigarette Lighter Plug to OBD2 | Provides 12V to an OBD2 socket to power a GPS unit, logger, etc $37.50 |
All cars and light trucks built and sold in the United States after January 1, 1996 were required to be OBD II equipped. In general, this means all 1996 model year cars and light trucks are compliant, even if built in late 1995.
Two factors will show if your vehicle is definitely OBD II equipped:
1) There will be an OBD II connector as shown below, and
2) There will be a note on a sticker or nameplate under the hood: 'OBD II compliant'.
The Connector
Pin 2 - J1850 Bus+
Pin 4 - Chassis Ground
Pin 5 - Signal Ground
Pin 6 - CAN High (J-2284)
Pin 7 - ISO 9141-2 K Line
Pin 10 - J1850 Bus
Pin 14 - CAN Low (J-2284)
Pin 15 - ISO 9141-2 L Line
Pin 16 - Battery Power
Where is the connector located?
The connector must be located within three feet of the driver and must not require any tools to be revealed. Look under the dash and behind ashtrays.
The Five Flavors of OBD II
While the parameters, or readings, required by OBD II regulations are uniform, the auto manufacturers had some latitude in the communications protocol they used to transmit those readings to scanners. Naturally, each felt they had the one true way, so we have five different OBD II communications protocols in use.
The big scanner consoles costing thousands of dollars include the decoding software and firmware for all five protocols in their units, making them universal. Less expensive units, for home or small shop use, are usually customized for a specific communications protocol. Be sure the scanner you are using suits the protocol of your car.
As a rule of thumb, GM cars and light trucks use SAE J1850 VPW (Variable Pulse Width Modulation). Chrysler products and all European and most Asian imports use ISO 9141 or KWP2000 circuitry. Fords use SAE J1850 PWM (Pulse Width Modulation) communication patterns. All 2008 and newer model year vehicles use CAN.
There are some variations among captive imports such as the Cadillac Catera, a German Opel derivative, which uses the European ISO 9141 protocol. If you have first hand knowledge of other such variations, please send them in and, together, we can build a more complete listing.
On 1996 and later vehicles, you can tell which protocol is used by examining the OBD II connector:
If your vehicle has this style connector, but doesn't have these pins populated, you probably have a pre-OBDII vehicle. To add some confusion, even having the connector with the contacts shown above is not a guarantee of OBD II compliance. This style connector has been seen on some pre-1996 vehicles which were not OBD II compliant.
Information on Pre-96 Cars
A reader with the California Air Resouces Board provided this list of pre-96 OBD II engine designations. Note that CARB recognizes engine series, rather than vehicle models, so the engine designations are the true key, with the vehicle models provided as a courtesy.
California Air Resources Board List of
Certified OBD II Complying Engine Families and Models
Engine Family | Manufacturer | Model(s) | Fully Compliant? |
1994 Model Year Certifications | |||
RAD2.8V8GFEM RFM3.8V8G1EK RFM4.6V8G1EK RMB2.2VJGCEK RMB3.2VJGCEK RNS2.0VJGDEK RTY3.0VJGFEK RTY2.7HGEEK RTY2.42HGEEK RVW2.8V8GFHM RVV2.3VHGFEK | Audi Ford Ford Mercedes-Benz Mercedes-Benz Nissan Toyota Toyota Toyota Volkswagen Volvo | 100 Mustang T-Bird, Cougar C220 C 280, S 320, SL 320 G20 Camry, ES300 T100 Previa, Previa All-Trac Corrado 850 Turbo | No No No No No Yes No No No No No |
1995 Model Year Certifications | |||
SBM5.4V8GAEK SCR2.0VJGFEK SCR122VJG2EK SCR2.0VJG2GK SCR2.0VJGFEL SDS2.0VJGFEK SFM3.828G1EK SFM3.8V8G1EK SFM4.6V8G1EK SFM4.6V8G1GK SFM2.318G1EK SFM3.028G1EK SFM3.018G1EK SFM3.028G1FK SFM4.018G1EK SFM4.6VJG1EK SFM4.028G1EK S1G3.8V8G1EK S3G4.319GFEJ S3G4.329GFGJ SIG2.3VJG2GK SHN2.7VJG1EK SHN2.7VJGFEK SHN2.5VJGKEK SHN3.0VJGKEK SJC4.0VJGAEK SJC6.0V8GFFK SJC4.0VJGFEK SKM1.8VJG1EK STK2.3VJGFEK STK2.5VJGFEK STK1.5VJG2EK STK1.8VJG1EK SFM2.318G1EK SFM3.018G1EK SFM3.028G1FK SFM4.018G1EK SFM4.028G1EK SMB3.6VJGFEK SMT1.5VJG2EK SMT1.8VJG2EK SMT2.4VJG2EK SNS2.4VJGFFK SNS2.0VJGFFK SNS3.0VJG1EK SNS3.0VJG1FK SNS2.4VJG2EK SNS1.6VJG2EK SNS2.0VJGFEK SNS3.0VJG1EK SLR4.0H8GOEK SFJ2.2VJGFEK STY3.41JG1GK STY3.42JG1GK STY3.0VJGFEK STY2.42HGJEK STY2.71HGEEK STY1.5VHGFEK STY4.0VJG1GK STY2.41HG1GK STY2.71HG1GK STY3.41JGFEK STY3.42JGFEK STY4.55JGFEK SVV2.3VJGFEK SVV2.4VJGFEK | BMW Chrysler Chrysler Chrysler Chrysler Diamond Star Ford Ford Ford Ford Ford Ford Ford Ford Ford Ford Ford GM GM GM GMC Honda Honda Honda Honda Jaguar Jaguar Jaguar KIA Mazda Mazda Mazda Mazda Mazda* Mazda* Mazda* Mazda* Mazda* Mercedes Benz Mitsubishi Mitsubishi Mitsubishi Nissan Nissan Nissan Nissan Nissan Nissan Nissan Nissan Rover Subaru Toyota Toyota Toyota Toyota Toyota Toyota Toyota Toyota Toyota Toyota Toyota Toyota Volvo (TC) Volvo | 750cl(V12), 850ci(V12) Dodge Neon, Plymouth Neon Dodge Neon, Plymouth Neon Dodge Neon, Plymouth Neon Dodge Neon, Plymouth Neon Eagle Talon, Mitsubishi Eclipse, Chrysler Sebring, Dodge Avenger Windstar Mustang T-Bird, Cougar Grand Marquis, Town Car, Crown Victoria Ranger Windstar Ranger Ranger Ranger Continental Ranger Camaro, Firebird S10 Pick-Up, Jimmy, Blazer S10 Pick-Up Cavalier, Sunfire Accord LX, EX (V6) Accord LX, EX (V6) TL NSX AJ16 (SC) V12 XJS Sephia Millenia Millenia Protege Protege B2300 B3000 B3000 B4000 B4000 S 320, C 280, SL 320 Summit, Mirage Summit, & Summit Wagon, Mirage, Expo, LRV Summit Wagon, Expo, LRV 240 SX G20 Maxima Maxima Altima Sentra/200 SX 200SX SE-R Maxima Range Rover New Model Legacy T100 2WD T100 2WD & 4WD Camry, Camry Wagon, ES300, Avalon Previa, Previa All-trac T100 2WD Tercel LS 400 Tacoma 2WD Tacoma 4WD Tacoma 2WD/4WD Tacoma 4WD Land Cruiser 850 Turbo Sedan/Wagon 850 Sedan/Wagon | No No No No No No No No No No No No No No No No Yes No No Yes Yes Yes Yes Yes No No No No No No No No No No No No Yes No No No Yes Yes No No Yes Yes Yes No No Yes (A/T models only) Yes Yes Yes No Yes No No No No No No No No Yes |
A note accompanying this list indicated that certification is for the engine group only. The models listed are believed correct, but the engine is the deciding factor.
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