Cruise Control System Circuit Description WO/ETC
Ignition positive voltage is supplied from the A/C cruise fuse to the cruise control module. The cruise control module is grounded to the chassis. When the cruise control ON/OFF switch is ON, ignition positive voltage is supplied to the cruise on/off terminal of the cruise control module. If the driver has not pressed the brake pedal or the clutch pedal, ignition positive voltage is supplied through the cruise control release (brake) switch and the cruise control (clutch) switch ,if equipped, to the cruise cancel terminal of the cruise control module. When the driver presses the brake pedal, battery positive voltage is supplied from the stop/hazard fuse, through the closed stop lamp switch to the brake input terminal of the cruise control module. When pressing R/A (resume/accelerate) on the control switch, ignition positive voltage is applied to the resume/accelerate terminal of the cruise control module. When Set/Coast is pressed on the control switch, ignition positive voltage is applied to the set/coast terminal of the cruise control module.
The cruise control module receives a vehicle speed signal input from the Powertrain Control Module (PCM). In operation, the voltage varies between 0 V and 5 V.
The cruise control module cruise engaged output terminal sends a signal to the Powertrain Control Module (PCM) when the cruise control is engaged. The cruise control module cruise inhibit input terminal, is a circuit used by the PCM to inhibit cruise control when conditions inconsistent with cruise operation are present.
The PCM will inhibit cruise control:
| • | When the vehicle speed is less than 40 km/h (25 mph) (25 mph). |
| • | When PARK, REVERSE, NEUTRAL, or 1st gear is indicated by the transaxle range switch. |
| • | When low engine RPM is present. |
| • | With high engine RPM (fuel cut-off) is present. |
| • | When vehicle speed is too high. |
| • | When an over or undercharged battery voltage condition exists. |
| • | The antilock brake system/traction control system is active for more than 2 seconds. |
If the PCM determines that any of the cruise control inhibit conditions are present, the PCM requests that the cruise control module disengage cruise control. The PCM accomplishes this request by opening the cruise inhibit output circuit. If the cruise engage output signal, sent by the cruise control module to the PCM, indicates that the cruise control is still engaged after the PCM has requested that cruise control disengage, the PCM sets a DTC.
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
