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Old 08-27-2002, 01:34 PM
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jbaj007 jbaj007 is offline
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Join Date: Jun 2001
Location: Santa Monica, CA
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Cruise control module(126) circuit board

1984 300SD
Cruise control works in all functions, except when the unit is turned off by hitting the brakes, you cannot reset it until the key has been cycled off/on (interesting while moving). It will reset if you use the "off" position of the stalk switch to disengage. A substituted unit works perfectly (all other parts of the cruise control system check to spec. also). I have checked the printed circuit board for open or burned traces, and have resoldered several of the solder joints.

I know pin #8 is ground circuit and have tried to trace it, but I am too ignorant electronically to figure what components on the PCB would be at fault. Does the reset circuit rely primarily on capacitors to "recharge"? Do any of you EE types or E-techs have a suggestion? Thanks.

The Golden Rule

1984 300SD (bought new, sold it in 1988, bought it back 13 yrs. later)

Last edited by jbaj007; 08-27-2002 at 09:42 PM.
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