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 stoplamp switch to the stoplamp switch input terminal
of the cruise control module. When pressing R/A (resume/accelerate) on
the steering wheel control switch, ignition positive voltage is applied
to the resume/accel terminal of the cruise control module. When the
Set/Coast is pressed on the steering wheel 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) |
| • | 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.
