Cruise Control Circuit Description

The cruise control module contains a low speed limit that prevents system engagement below a minimum speed of approximately 39 km/h (24 mph). Mode control switches on the steering wheel control the module. The cruise control system is in the Standby/Disabled mode until all conditions inconsistent with cruise control operation are cleared.

When the ignition switch is in the RUN position, battery voltage is applied to terminal F of the cruise control module. When the ON/OFF switch is pressed On, battery voltage is applied to terminal A of the cruise control module. When the brake pedal is not depressed, battery voltage is present at module terminal D. When the brake pedal is depressed, battery voltage is present at module terminal G.

When the RESUME/ACCEL switch is depressed, battery voltage is applied to terminal C of the module. When the SET/COAST switch is depressed, battery voltage is present at module terminal B. Cruise control module connector terminal K is the speed signal terminal. During operation, voltage oscillates between a high of 5 volts and a low of 0.5 volts. Ground is at module terminal E. When the cruise control system is engaged, terminal J is used in order to signal the Powertrain Control Module (PCM).

When conditions not consistent with cruise operation are present, terminal H is used by the PCM in order to inhibit the cruise control system. The PCM inhibits the cruise control system by ungrounding the inhibit cruise input at terminal H. The PCM inhibits the cruise control under the following conditions:
^ The engine is Off.
^ The automatic transaxle is in PARK/ NEUTRAL or REVERSE.
^ The engine has a high RPM (fuel cut-off).
^ The clutch pedal is depressed.
^ The PCM sets certain DTCs or other failure records. Refer to Engine Controls Diagnostic System Check.
^ The PCM will also inhibit cruise until it sees the first brake or clutch pedal apply in the current ignition cycle.