Cruise Control System Circuit Description WO/ETC

The electro-motor cruise control is a speed control system that maintains a desired vehicle speed under normal driving conditions. The system has the capability to perform the following actions:

The driver may cancel the cruise control by simultaneously depressing the following buttons:

The cruise control module contains the following components:

The controller performs the following operations:

In response to the controller, the motor moves a cable attached to the throttle linkage in order to vary the throttle position. This action maintains the desired cruise speed. The cruise control module contains a low speed limit that will prevent system engagement below a minimum speed of approximately 25 mph. The module is controlled by mode control switches. The mode control switches are located on the multi-function lever. Cruise control operation requires that the operator set an initial speed using the SET/COAST button before the RESUME/ACCEL function is active.

Battery voltage is applied to terminal F of the cruise control module when the ignition switch is in the RUN position. When the slider switch is moved to the ON position, battery voltage is applied to terminal A of the cruise control module. The cruise control module needs to receive brake input voltage at one of the following terminals once each ignition cycle before allowing cruise to operate:

The brake input voltage is received at the cruise control module through the following components:

1. The A/C CRUISE Fuse 12
2. The cruise control release brake switch
3. The cruise control clutch switch on vehicles equipped with a manual transmission

The voltage to the cruise control module terminal D is interrupted if either of the above switches is open. Terminal G must see a ground path through the CHMSL bulb in order for the cruise to operate properly. If the brake pedal is depressed, battery voltage is present at the module terminal G. When the slider switch is moved to the RESUME/ACCEL position, battery voltage is applied to terminal C of the module. With the set switch depressed, battery voltage is present at cruise module terminal B. Cruise module connector terminal K is the speed signal terminal. During operation the voltage will oscillate between the following levels:

The cruise module ground is at module terminal E.

For V6 VIN K models, refer to Cruise Control System Circuit Description .

Cruise Control System Circuit Description W/ETC

Ignition positive voltage is supplied from the electronic throttle control (ETC) fuse, to the TAC module. The TAC module is grounded to G110. When the cruise control ON/OFF switch is on, ignition positive voltage is applied to the cruise on switch signal terminal of the TAC module. If the driver has not pressed the brake pedal or clutch pedal if equipped, ignition positive voltage is supplied through the switches, to the cruise control release switch signal and clutch signal, if equipped, terminals of the PCM. Cruise control is canceled when the driver presses either the brake pedal or clutch pedal. The stop lamp switch contacts close, applying battery positive voltage to the stop lamp signal circuit of the TAC module. Voltage is also removed from the cruise release signal circuit and the clutch switch signal circuit, at the PCM. When pressing the SET/COAST button on the multifunction turn signal lever, ignition positive voltage is applied to the set/coast switch signal terminal of the TAC module. When pressing the R/A (resume/accelerate) on the control switch, ignition positive voltage is applied to the resume/accelerate switch signal terminal of the TAC module.

When the cruise switch is in the ON position, and the driver presses the SET/COAST button, the TAC module notifies the PCM that the cruise control is requested. The PCM then checks to see that the cruise control enable criteria is met. If the cruise control criteria has been met the PCM sends a class 2 message to the instrument panel cluster (IPC) to illuminate the cruise light, if equipped