MX-5 Miata Mazdaspeed L4-1.8L DOHC Turbo (2004)
Terminal Voltage Table (Reference) - Terminal (J - T)
4. Measure the voltage at the cruise control module terminals as indicated.
5. Disconnect the cruise control module connector before inspecting for continuity at terminal T.
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If not as specified, inspect the parts listed under "Action."
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If the parts and wiring harnesses are okay but the system still does not work properly, replace the cruise control module.