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how to pull a code/ 94 cavalier

8485 Views 4 Replies 4 Participants Last post by  rb6667
Hello all, My 94 cavalier is setting a code that I can not get out of the system. 3.1 eng. All the auto parts stores have code readers, but they start at 1995/2006. The Haynes manual says you can jump a wire from the ground to the power, and the check engine light will tell you what code is being set. The manual does not say what leads are power or ground.

The plug under the dash has only 4 wires going to it: Orange, White, Black, Brown. I tried all combinations to find out which one was power, and ground. No luck. Any thoughts?

Thanks in advance,

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You probably can't as you likely have the OBD 1.5.
Click on the link for more info.

Accessing Trouble Codes

* Turn ignition switch to OFF position
* Locate Data Link Connector (DLC), see image below.
# Jumper the A&B terminals(a paper clip or a jumper wire work ok)
# Turn Ignition switch to ON position.
# Count the flashes on the "CHECK ENGINE" or "SERVICE ENGINE" light.
# FLASH, pause, FLASH, FLASH = code 12
# NOTE: Some 94 & 95 models do not have the B terminal. In which case a scanner is required.
# NOTE: Some 94 & 95 models that DO have the A & B terminals still require a scanner.
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