Mitsubishi Outlander XL. Manual - part 1258

GENERAL INFORMATION

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By using the auto-cruise control, the driver can drive
at preferred speeds in a range of approximately 40 to
160  km/h  (25  to  100  mph)  without  depressing  the
accelerator pedal.

For this auto-cruise control system, in conjunction with
the electronic throttle valve control system, the engine
control  module  (ECM)  electronically  controls  the
throttle valve.

CONSTRUCTION DIAGRAM

ZC601485

ZC601822

ZC601484

ZC601483

ZC601051

ZC601159

Stoplight switch

Engine control
module (ECM)

Transmission
range switch

Throttle body
[Built-in
throttle position sensor
(TP sensor)
and
throttle actuator control motor
(TAC motor)]

"CRUISE" indicator light

Transaxle
control module
(TCM)

Data link connector

Accelerator pedal
[Built-in accelerator
pedal position sensor
(APP sensor)]

Auto-cruise
control switch

Brake pedal
assembly

Bottom cover
assembly
(driver's side)

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17b-2

AUTO-CRUISE CONTROL SYSTEM

GENERAL INFORMATION

COMPONENTS AND FUNCTIONS

Component

Function

Accelerator pedal position sensor (APP sensor)

Informs the ECM of the accelerator pedal depression.

"CRUISE" indicator light

The  light  is  included  in  the  combination  meter  and
illuminates  when  the  "ON  OFF"  switch  is  pressed
(auto-cruise control system: ON).

Auto-cruise control switch "ON OFF" switch

Power switch for auto-cruise control system.

"ACC RES" switch

Vehicle speed is set with the "ACC RES" switch and
"COAST SET" switch.

"COAST SET" switch
"CANCEL" switch

Cancels the cruise speed setting.

Cancel system

Stoplight switch

｠

Because the constant speed driving is canceled by
the  brake  operation,  it  detects  the  brake  pedal
status.

｠

As for the stoplight switch, two built-in switches, the
stoplight switch which is also used for the stoplight
illumination  and  the  brake  switch  which  is  used
exclusively  for  the  auto-cruise  control,  are
integrated, and thus the reliability is enhanced.

Transmission

 range

switch

Because the constant speed driving is cancelled by
the selector lever operation, it detects the "N" position.

Data link connector

If the M.U.T.-III scan tool is connected, the input check
code from the ECM can be read.

Engine control module (ECM)

｠

Based  on  the  input  signal  from  each  sensor  and
switch,  it  outputs  the  throttle  opening  instruction
signal  to  the  throttle  actuator  control  motor  (TAC
motor).

｠

Based  on  the  input  signal  from  each  sensor  and
switch, it outputs the transaxle control signal to the
TCM.

｠

Based on the output shaft speed sensor signal from
the TCM, it calculates the vehicle speed.

｠

Outputs the ON/OFF signals of "CRUISE" indicator
light and auto-cruise control system.

｠

The  diagnostic  trouble  code  signal  is  sent  to  the
"CRUISE" indicator light.

｠

The  input  check  code  are  sent  to  the  data  link
connector.

Throttle actuator control motor (TAC motor)

The throttle valve opens and closes in response to the
throttle angle control signal from the ECM.

Throttle position sensor (TP sensor)

Informs the ECM of the throttle valve opening angle.

Transaxle control module (TCM)

｠

Based  on  the  transaxle  control  signal  from  the
ECM, it controls the transaxle.

｠

Outputs the signal from the transaxle output shaft
speed sensor to the ECU.

AUTO-CRUISE CONTROL SYSTEM

17b-3

GENERAL INFORMATION

CONSTRUCTION AND OPERATION

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SYSTEM OUTLINE

The  ECM  calculates  the  auto-cruise  control  system
operation status when the control section of the auto-
cruise  control  system  inside  the  ECM  receives  the
input signals of the auto-cruise control switch, vehicle
speed,  and  cancel  system  (stoplight  switch  and
transmission  range  switch).  To  the  engine  control
section it sends the target accelerator angle value for

auto-cruise  control  system;  to  the  TCM  it  issues  a
command  to  transaxle  control;  and  to  the  gauge  it
issues  an  ON/OFF  command  for  the  "CRUISE"
indicator light.
In the engine control section, the target throttle angle
value is calculated from the target acceleration value
for  auto-cruise  control  system  and  the  actual
accelerator  angle  value,  and  the  vehicle  speed  is
controlled by applying the TAC motor.

BLOCK DIAGRAM

ZC6014860000

Cancel system 
(Stoplight switch, 
 transmission range switch)

Auto-cruise control switch

TCM

"CRUISE" indicator light

ECM

TAC motor

Target accelerator
pedal opening
angle signal

Engine control section

 

Cruise control section

Actual accelerator pedal
opening angle signal

Transaxle
control signal

Target throttle
valve opening
angle signal

Vehicle speed signal

Output shaft
speed sensor
signal

"CRUISE"
indicator light
ON/OFF signal

SYSTEM FUNCTIONS

Set function

1.

During  driving  with  the  vehicle  speed  range  from
approximately  40  to  160  km/h  (25  to  100  mph),
press the "COAST SET" switch, and then release
the hand from the "COAST SET" switch.

2.

The  vehicle  speed  of  when  the  "COAST  SET"
switch  is  released  is  memorized.  Thereafter,  the
constant speed driving is performed at that vehicle
speed.

3.

When the "COAST SET" switch is operated during
the driving with the vehicle speed of approximately

160 km/h (100 mph) or more, the constant speed
driving will not be performed.

Coast function

1.

When the "COAST SET" switch is continued to be
pressed for 0.5 seconds or longer during constant
speed  driving,  the  throttle  valve  becomes  fully
closed while the switch is pressed, and the vehicle
is decelerated.

17b-4

AUTO-CRUISE CONTROL SYSTEM

CONSTRUCTION AND OPERATION

2.

When  the  "COAST  SET"  switch  is  released,  the
vehicle  speed  of  that  time  is  newly  memorized.
Thereafter, the constant speed driving is performed
at that vehicle speed.

3.

Also when the "COAST SET" switch is pressed for
less  than  0.5  seconds,  the  vehicle  is  decelerated
1.6 km/h (1 mph) from the vehicle speed of constant
speed driving, and the decelerated vehicle speed is
newly memorized. Thereafter, the constant speed
driving is performed at that vehicle speed.

4.

When the "COAST SET" switch is continued to be
pressed  and  the  vehicle  speed  is  decelerated  to
approximately  40  km/h  (25  mph)  or  less,  the  set
function and coast function are cancelled, and then
the constant speed driving is cancelled.

Resume function

1.

When the "CANCEL" switch is pressed or the brake
pedal  is  depressed  during  the  constant  speed
driving, it cancels the constant speed driving.

2.

Subsequently,  when  the  "ACC  RES"  switch  is
pressed during the driving with the vehicle speed of
approximately  40  km/h  (25  mph)  or  more,  the
constant speed driving is performed with the vehicle
speed  memorized  at  the  last  cancellation  of
constant speed driving.

Accel function

1.

When  the  "ACC  RES"  switch  is  continued  to  be
pressed  for  0.5  seconds  or  more  during  constant
driving,  it  accelerates  the  vehicle  with  specified
acceleration while the switch is pressed.

2.

Then, when the "ACC RES" switch is released, the
vehicle  speed  of  that  time  is  newly  memorized.
Thereafter, the constant speed driving is performed
at that vehicle speed.

3.

Also,  when  the  "ACC  RES"  switch  is  pressed  for
less than 0.5 seconds, the vehicle is accelerated 1.6
km/h  (1  mph)  from  the  vehicle  speed  of  constant
speed driving, and the accelerated vehicle speed is
newly memorized. Thereafter, the constant speed
driving is performed at that vehicle speed.

4.

It  is  possible  to  keep  pressing  the  "ACC  RES"
switch  until  the  vehicle  speed  is  accelerated  to
approximately  160  km/h  (100  mph)  or  above.
However, after the "ACC RES" switch is released,
the vehicle speed of approximately 160 km/h (100
mph)  becomes  the  newly  memorized  vehicle
speed.  Thereafter,  the  constant  speed  driving  is
performed at that speed.

Cancel function
When any of the following conditions is satisfied, the
constant speed driving will be cancelled.

｠

The  auto-cruise  control  system  is  stopped  by  the
pressing of the "ON OFF" switch.

｠

The "CANCEL" switch is pressed.

｠

The brake pedal is depressed.

｠

The select lever is shifted to the "N" position.

｠

The vehicle speed becomes 40 km/h (25 mph) or
less.

｠

The vehicle speed is reduced 15 km/h (9 mph) or
more from the speed at which the constant speed
driving was started.

｠

An abnormality occurs to the vehicle speed signal.

｠

The ASC is operated.

｠

The  engine  coolant  temperature  becomes
abnormally high.

｠

The  A/T  fluid  temperature  becomes  abnormally
high.

｠

An abnormality occurs to the ECM.

Fail-safe function
When any of the following conditions is satisfied, the
auto-cruise  control  system  function  is  stopped  until
the system returns to normal. Also, when any of the
conditions  is  satisfied  during  the  constant  speed
driving,  the  constant  speed  driving  is  cancelled
immediately.

｠

An  abnormality  occurs  to  the  auto-cruise  control
switch.

｠

An abnormality occurs to the stoplight switch.

When any of the following conditions is satisfied, stop
the  vehicle  once  and  turn  the  ignition  switch  to
"LOCK"  (OFF).  Otherwise,  even  when  the  system
returns  to  normal,  the  auto-cruise  control  system
function will continue to be stopped. Also, when any
of the conditions is satisfied during the constant speed
driving,  the  constant  speed  driving  is  cancelled
immediately.

｠

ECM abnormality

｠

TP sensor abnormality

｠

APP sensor abnormality

Diagnosis function

｠

The diagnostic trouble code check is possible with
the "CRUISE" indicator light.

AUTO-CRUISE CONTROL SYSTEM

17b-5

CONSTRUCTION AND OPERATION