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Ok. Just wanted to double check before moving forward. You can retrieve the Diagnostic Trouble Codes or DTC's for that system by grounding pin #8 in the data link connector (that pin should be fore a white wire) which should be under or on the lower portion of the dash on the drivers side and may have a rectangular plastic cover over it.
While grounding this terminal your check light will flash each code 3 times in pulses that you can count. Code 12 should flash first and if there are any DTC's they will follow. So code 12 would be 1 flash-pause-2 flashes and again 2 more times, then the DTC's.
The DTC's will give an idea of what part of the system a problem might exist.
This procedure can be done by you or your local mechanic if you have one that you use. This is a good place to start.
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