code reader problem
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Junior User
Joined: Jul 2004
Posts: 95
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code reader problem
Yesterday i bought a "c-reader" OBD 11 from Harbor frieght to scan the codes on my 96 f-150. This morning i pluged it into the "data access port" under the ashtray while the truck was running like the instructions said but nothing happened at all. I did the same process on my 2000 chevy impala and everything worked just like it was suppose to. Any idea what went wrong? Thanks in advance for any help you can give me.
Elder User
Joined: Sep 2004
Posts: 941
Likes: 4
GM and Ford use different electrical protocols and different pins on the OBD-II connector. GM uses VPW and Ford uses PWM. Ford uses pin 10 on the connector and GM does not. Your scanner may not be compatible with SAE J1850 PWM, or there may be a problem connecting to pin 10.
You can read more about this here:
http://www.nsxprime.com/FAQ/Miscellaneous/OBDII.htm
and here:
http://www.obdii.com/connector.html#which%20cars
The C-reader manual on Harbor Freight's website claims that the scanner does support PWM, even though it is not working for you. The broken English in the manual is typical of many Chinese-made products. Perhaps the quality of the product is in line with the manual, and it has a defect in Pin 10 on the connector. Harbor Freight is usually good about taking such products back.
You can find more about it here:
http://www.launch-tech.com
(Unfortunately much of the documentation is in Chinese).
and here:
http://www.launch-techs.com
(Their support site for Africa, but the English is a little better)
You can read more about this here:
http://www.nsxprime.com/FAQ/Miscellaneous/OBDII.htm
and here:
http://www.obdii.com/connector.html#which%20cars
The C-reader manual on Harbor Freight's website claims that the scanner does support PWM, even though it is not working for you. The broken English in the manual is typical of many Chinese-made products. Perhaps the quality of the product is in line with the manual, and it has a defect in Pin 10 on the connector. Harbor Freight is usually good about taking such products back.
You can find more about it here:
http://www.launch-tech.com
(Unfortunately much of the documentation is in Chinese).
and here:
http://www.launch-techs.com
(Their support site for Africa, but the English is a little better)
