Cruise Control System Circuit Description V8 VIN G
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:
• | An electronic controller |
The controller performs the following operations:
• | Operates the electric motor |
In response to the controller, the motor moves a connecting strap that
is attached to the cruise control cable. The cable moves 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:
- The A/C CRUISE Fuse 12
- The cruise control release brake switch
- 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.
Cruise Control System Circuit Description V6 VIN K
For V8 VIN G vehicles refer
to
Cruise Control System Circuit Description
.
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:
• | An electronic controller |
The controller performs the following operations:
• | Operates the electric motor |
In response to the controller, the motor moves a connecting strap that
is attached to the cruise control cable. The cable moves 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
is in Standby Disabled until all the conditions inconsistent with cruise
control operation are cleared.
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:
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. Terminal J
is used to signal the powertrain control module (PCM) when cruise control
is engaged. The PCM determines the correct shift pattern for the transmission.
Terminal H is used by the PCM in order to inhibit cruise control when the
conditions are not consistent with cruise operation are present. The following
lists the cruise control inhibit criteria:
• | The vehicle speed sensor (VSS) is less than 25 mph. |
• | The PARK, REVERSE, NEUTRAL or 1st GEAR is indicated by the transaxle
range switch. |
• | An over/under battery voltage condition exists. |
• | The engine RPM is high (fuel cutoff). |