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My cruise control surges 10 to 20 mph and then disengages
1992 – 940 Turbo
Vacuum lines are fine, brake switches adjusted and working properly.
Onboard Diagnostic codes Module unit B position two.
Self Diagnosis error code 2-1-2
Component Test shows all systems fine (Brake light switch, Brake valve, Selector Resume, Selector Set, Start inhibitor switch all report good.)
My wire colors don’t match the FAQ and I don’t have a yellow wire on the instrument cluster. It did work fine until a year ago. Any ideas would be appreciated
Thanks
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