Mitsubishi Galant. Manual — part 374

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-66

STEP 7. Check the combination meter.
(1) Remove the combination meter and measure at the

combination meter side. (Refer to GROUP 54A,
Combination Meter Assembly and Vehicle Speed Sensor

P.54A-65

.)

(2) Measure the continuity between terminal 29 at conductor C-

29 and terminal 13 at conductor C-30.

Q: Is the continuity less than 2 ohm?

YES : Go to Step 8.
NO : Replace the combination meter.

Refer to GROUP 54A, Combination Meter Assembly
and Vehicle Speed Sensor

P.54A-65

.

Then check that the malfunction is eliminated.

STEP 8. Check auto-cruise control-ECU connector C-52.
Q: Is the connector damaged?

YES : Repair or replace connector.

Refer to GROUP 00E, Harness Connector Inspection

P.00E-2

.

Then check that the malfunction is eliminated.

NO : Go to Step 9.

56

55

54

53

52

51

50

49

48

47

46

45

44

43

42

41

16

15

14

13

12

11

8

10

9

7

6

5

4

3

2

1

AC004604

CONNECTOR C-29

CONNECTOR C-30

AB

AC004572AB

CONNECTOR: C-52

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-67

STEP 9. Check the harness wire between combination
meter connector C-30 and auto-cruise control-ECU
connector C-52.
Q: Is any harness wire between combination meter

connector C-30 and auto-cruise control-ECU connector
C-52 damaged?
YES : Repair the harness wire and then check that the

malfunction is eliminated.

NO : Check that the malfunction is eliminated.

If the malfunction is eliminated, replace the auto-
cruise control-ECU. (Refer to

P.17-74

.)

Then check that the malfunction is eliminated.

DATA LIST REFERENCE TABLE

M1172002400051

AC004603

CONNECTOR: C-30

AB

AC004572AB

CONNECTOR: C-52

MUT-II SCAN
TOOL DISPLAY

ITEM
NO.

INSPECTION ITEM

INSPECTION
REQUIREMENT

NORMAL
CONDITION

CANCEL SWITCH

04

Auto-cruise
control
switch

CANCEL

CANCEL switch: "ON"

ON

CANCEL switch: "OFF"

OFF

IDLE SW SIG

08

Closed throttle position
switch

Accelerator pedal: Depressed OFF

Accelerator pedal: Released

ON

MAIN SW

01

Auto-cruise
control
switch

MAIN

MAIN switch: "ON"

ON

MAIN switch: "OFF"

OFF

OD OFF

15

A/T control signal

No "OD-OFF" request

OFF

"OD-OFF" request

ON

PNP SW/CLUTCH

14

Park/neutral position
switch

Selector lever: "P" or "N"
position

ON

Selector lever: Other than "P"
or "N" position

OFF

RESUME SWITCH 03

Auto-cruise
control
switch

RESUME RESUME switch: "ON"

ON

RESUME switch: "OFF"

OFF

SET SWITCH

02

SET

SET switch: "ON"

ON

SET switch: "OFF"

OFF

STOPLIGHT SW

05

Stoplight switch

Brake pedal: Depressed

ON

Brake pedal: Released

OFF

AUTO-CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

17-68

CHECK AUTO-CRUISE CONTROL-ECU TERMINALS

M1172002700052

TP SENSOR

13

Throttle position sensor Ignition

switch:
"ON"

Accelerator pedal:
Fully depressed

300

−

1,000 mV

<2.4L>
537

−

735 mV

<3.0L>

Accelerator pedal:
Depressed

Increases in
proportion to throttle
opening angle.

Accelerator pedal:
Released

4,500

−

5,500 mV

VSS

10

Vehicle speed sensor

Road test the vehicle

The speedometer and
MUT-II display the
same value.

MUT-II SCAN
TOOL DISPLAY

ITEM
NO.

INSPECTION ITEM

INSPECTION
REQUIREMENT

NORMAL
CONDITION

ACX02234

TERMINAL
NO.

INSPECTION
ITEM

INSPECTION CONDITIONS

NORMAL
CONDITION

1

Throttle
position
sensor input

When accelerator pedal is fully depressed

4.0

−

5.5 V

When accelerator pedal is released

0.4

−

1.0 V

2

Powertrain
control module
output (Idle
switch)

When accelerator pedal is depressed

4.0

−

5.5 V

When accelerator pedal is not depressed

2.5 V or less

3

A/T control
output

No "OD-OFF" request

Battery positive
voltage

"OD-OFF" request

0 V

4

Stoplight
switch input

When brake pedal is depressed When stoplight

switch is ON

Battery positive
voltage

When brake pedal is not
depressed

When stoplight
switch is OFF

0 V

5

Pump power
supply

Ignition switch: "ON" position
Stoplight switch: OFF

10 V or more

6

ECU power
supply

Ignition switch: "ON" position

Battery positive
voltage

7

Release valve

When decelerating with the "SET" switch while driving
at constant speed

1 V or less

8

Control valve

10 V or more

7

Release valve

When cancelling constant speed driving with the
"CANCEL" switch

10 V or more

8

Control valve

Battery positive
voltage

AUTO-CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

17-69

9Auto-cruise

control switch
input

When main switch is "ON"

Approximately 7.0 V

When input switch has not been
operated

When all switches
are OFF

3.5

−

5.0 V

When input switch is pushed
down

When "SET" switch
is ON

0.4

−

2.3 V

When input switch is pushed up When "RESUME"

switch is ON

2.3

−

3.5 V

When input switch is pulled
forward

When "CANCEL"
switch is ON

0.4 V or less

10

Vehicle speed
sensor input

When vehicle is moved forwards
and backwards, sensor turns
ON and OFF repeatedly

When sensor is ON

0 V

When sensor is OFF 4.5 V or more

Ignition switch: "ON" position

Move the vehicle
forward slowly

0 and 8

−

12 V

alternate

11

Diagnosis
control input

When ignition switch is "ON" position

4 V or more

12

ACC power
supply

When ignition switch is in "ACC" position
Main switch: "ON"

Battery positive
voltage

13

Park/neutral
position switch
input

When select lever is in a position
other than N range

When park/neutral
position switch is
OFF

Battery positive
voltage

When select lever is in N range

When park/neutral
position switch is ON

0 V

14

Ground

At any time

0 V

15

Indicator light
input (inside
combination
meter)

When indicator light is illuminated

0 V

When indicator light is switch off

Battery positive
voltage

16

Auto-cruise
vacuum pump
motor input

When driving at constant speed
using the "SET" switch

Motor stopped/
running

Battery positive
voltage/0 V

When accelerating with the
"RESUME" switch while driving
at constant speed

Motor stopped/
running

Battery positive
voltage/0 V

When decelerating with the
"SET" switch while driving at
constant speed

Motor stopped

Battery positive
voltage

When cancelling constant speed
driving with the "CANCEL"
switch

Motor stopped

Battery positive
voltage

TERMINAL
NO.

INSPECTION
ITEM

INSPECTION CONDITIONS

NORMAL
CONDITION