Ignition positive voltage is supplied from the CR CONT
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, ignition positive
voltage is supplied through the ABS/TCC switch, 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 LP fuse, through the closed stop
lamp switch to the stoplamp switch 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 the 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 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 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 |
| • | With high engine RPM (fuel cut-off) |
| • | When vehicle speed is too high |
| • | When an over or undercharged battery voltage condition exists. |
| • | 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 Indicator (Blue-Green)
The CRUISE indicator may only be ON during RUN. The IPC illuminates
the CRUISE indicator under the following conditions:
| • | The powertrain control module (PCM) sends a class 2 serial
data message requesting illumination due to active cruise control. |
