Mitsubishi Galant. Manual — part 375
AUTO-CRUISE CONTROL
TSB Revision
ENGINE AND EMISSION CONTROL
17-70
ON-VEHICLE SERVICE
AUTO-CRUISE CONTROL SWITCH CHECK
M1172001100068
1. Turn the ignition switch to "ON" position.
2. Check that the indicator light within the combination meter
illuminates when the main switch is switched "ON".
AUTO-CRUISE CONTROL SETTING
1. Switch "ON" the main switch.
2. Drive at the desired speed, above approximately 40 km/h.
(25 mph)
3. Push the auto-cruise control switch in the direction of arrow.
4. Check to be sure that when the switch is released the speed
is the desired constant speed.
NOTE: If the vehicles speed decreases to approximately 15
km/h (9 mph) below the set speed because of climbing a hill
for example, the auto-cruise control will be cancelled.
SPEED-INCREASE SETTING
1. Set to the desired speed.
2. Push the auto-cruise control switch in the direction of arrow.
3. Check to be sure that acceleration continues while the
switch is held, and that after it is released the constant
speed at the time when it was released becomes the driving
speed.
NOTE: Acceleration can be continued even if the vehicle
speed has passed the high-speed limit [approximately 200
km/h (124 mph)].
But the speed when the auto-cruise control switch is
released will be recorded as the high-speed limit.
AC004605
AUTO-CRUISE
INDICATOR LIGHT
AB
ACX01172
AD
ACX01172
AE
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-71
SPEED-REDUCTION SETTING
1. Set to the desired speed.
2. Push the auto-cruise control switch in the direction of arrow.
3. Check to be sure that deceleration continues while the
switch is pressed, and that after it is released the constant
speed at the time when it was released becomes the driving
speed.
NOTE: When the vehicle speed reaches the low limit
[approximately 40 km/h (25 mph)] during deceleration, the
auto-cruise control will be cancelled.
RETURN TO THE SET SPEED BEFORE
CANCELLATION AND AUTO-CRUISE CONTROL
CANCELLATION
1. Set the auto-cruise speed control.
2. When any of the following operations are performed while at
constant speed during auto-cruise control, check if normal
driving is resumed and deceleration occurs.
(1) The auto-cruise control switch is pushed in the direction
of arrow.
(2) The brake pedal is depressed.
(3) The selector lever is moved to the "N" range.
3. At a vehicle speed of 40 km/h (25 mph) or higher, check if
when the "RESUME" switch is switched "ON," the vehicle
speed returns to the speed before auto-cruise control driving
was cancelled, and constant speed driving occurs.
4. When the main switch is turned to "OFF" while driving at
constant speed, check if normal driving is resumed and
deceleration occurs.
AUTO-CRUISE CONTROL SYSTEM COMPONENT
CHECK
M1172001700060
STOPLIGHT SWITCH
1. Disconnect the connector.
2. Check for continuity between the terminals of the switch.
ACX01172
AD
ACX01172
AG
MEASUREMENT
CONDITIONS
TERMINAL
CONNECTOR
OF TESTER
SPECIFIED
CONDITION
When brake pedal is
depressed. (for stoplight
circuit)
1
−
2
Continuity
3
−
4
No continuity
When brake pedal is not
depressed. (for auto-
cruise control circuit)
1
−
2
No continuity
3
−
4
Continuity
ACX01180 AB
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-72
PARK/NEUTRAL POSITION SWITCH
("N" POSITION)
Refer to GROUP 23A, On-vehicle Service
−
Essential Service
.
THROTTLE POSITION SENSOR
For 2.4L engine, refer to GROUP 13A, On-vehicle Service
−
Throttle Position Sensor Check
For 3.0L engine, refer to GROUP 13B, On-vehicle Service
−
Throttle Position Sensor Check
AUTO-CRUISE VACUUM PUMP
1. Disconnect the vacuum hose from the auto-cruise vacuum
pump and connect a vacuum gauge to the vacuum pump.
2. Disconnect the vacuum pump connector.
3. Check the auto-cruise vacuum pump and valves according
to the following procedure:
(1) Connect the positive battery terminal to auto-cruise
vacuum pump connector terminal 1, and the negative
battery terminal to terminals 2, 3, and 4.
Then the vacuum gauge should read 27 kPa (8.0 in Hg)
or more.
(2) The vacuum should be maintained when terminal 4 is
disconnected from the negative battery terminal while
terminals 1, 2, and 3 remain connected.
Then the vacuum gauge should read 0 kPa (0 in Hg)
when terminal 2 is disconnected from the negative
battery terminal while terminals 1, and 3 remain
connected.
(3) The vacuum should be maintained when terminal 4 is
disconnected from the negative battery terminal while
terminals 1, 2, and 3 remain connected.
Then the vacuum gauge should read 0 kPa (0 in Hg)
when terminal 3 is disconnected from the negative
battery terminal while terminals 1, and 2 remain
connected.
VACUUM ACTUATOR
1. Disconnect the vacuum hose from the vacuum actuator, and
connect a hand vacuum pump to the actuator.
2. Check that the throttle lever operates when applying
vacuum, and the vacuum is maintained.
ACX01181AB
VACUUM
GAUGE
CONTROL
VALVE
RELEASE
VALVE
AC001493
THROTTLE BODY
VACUUM ACTUATOR
AB
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-73
AUTO-CRUISE CONTROL CHECK
Measure the resistance between the terminals when each of
the "SET," "RESUME," "CANCEL" and "MAIN" switches is
pressed. If the values measured at the time correspond to
those in the table below, the resistance values are correct.
VEHICLE SPEED SENSOR CHECK
Refer to GROUP 54A, Combination Meters Assembly and
Vehicle Speed Sensor
.
SWITCH
POSITION
RESISTANCE BETWEEN TERMINALS
"MAIN" switch
"OFF"
Terminals 1 and 2 Less than 2 ohm
"MAIN" switch
"ON"
Terminals 1 and 2 Approximately 3.9 k
Ω
"CANCEL" switch
ON
Terminals 2 and 3 Approximately 0
Ω
"RESUME"
switch ON
Terminals 2 and 3 Approximately 910
Ω
"SET" switch ON
Terminals 2 and 3 Approximately 220
Ω
ACX01178 AB
OFF
OFF
OFF
OFF
ON
ON
ON
ON
CAN
MAIN
RES
SET
1
2
3
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