Cruise Control Circuit Description

The ignition voltage is supplied from fuse 22 through circuit 741 to terminal F of the cruise control module. The cruise control module receives ground at terminal E, through circuit 1050 and from G117.

When the OFF-ON-R/A switch is moved to the ON position, the battery voltage is applied through circuit 397 to terminal A of the cruise control module connector.

If the brake pedal is not pressed, battery voltage is present from circuit 741 through the cruise control release switch and circuit 86 to the cruise control module terminal D.

If the brake pedal is depressed, battery voltage is supplied from fuse 23 through circuit 140 the stop lamp switch and circuit 17 to the cruise control module terminal G.

Terminal G needs current flow from through the Center High-Mounted Stop Lamp (CHMSL) bulbs for cruise to operate (disable) properly. When the OFF-ON-R/A switch is moved to the R/A (Resume/Accelerate) position, the battery voltage is applied through circuit 87 to terminal C of the cruise control module.

With the SET CRUISE button switch pressed, the battery voltage is present through circuit 84 to the cruise control module terminal B. The cruise control module terminal K is the speed signal terminal through circuit 389. In operation, the voltage will oscillate between a high of 4-5 volts and a low of near ground.

The cruise control module terminal J is used to signal the powertrain control module (PCM) when the cruise control is engaged through circuit 85. The PCM will then determine the correct shift pattern for the transmission. The cruise control module terminal H is used by the PCM through circuit 83 in order to inhibit the cruise control when the conditions are inconsistent with the cruise operation are present.