Mitsubishi Galant 9G. Manual — part 462

AUTO-CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

17-66

STOPLIGHT
SW

05

Stoplight switch

Brake pedal: Depressed

ON

Brake pedal: Released

OFF

TP
SNSR(MAIN)

11

Throttle position sensor
(main)*

• Remove the intake air

hose at the throttle
body.

• Disconnect the throttle

position sensor
connector, and then
connect terminals 3, 4,
5 and 6 with the use of
the special tool:
MB991658 (Test
harness).

• Ignition switch: "ON"

Fully close
the throttle
valve with
your finger

300

− 700 mV

Fully open
the throttle
valve with
your finger

4,000 mV or more

No load

520

− 620 mV

A/C switch: "OFF" to "ON"

Voltage rises

Selector lever: "N" to "D"

Voltage rises

VSS

10

Vehicle speed signal

Road test the vehicle

The speedometer
and scan tool
MB991958 display
the same value.

MUT-III
SCAN TOOL
DISPLAY

ITEM
NO.

INSPECTION ITEM

INSPECTION REQUIREMENT

NORMAL
CONDITION

AUTO-CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

17-67

PCM TERMINAL VOLTAGE REFERENCE CHART FOR AUTO-CRUISE CONTROL
SYSTEM OPERATION

M1172004800055

1. Disconnect the PCM connectors, and connect

special tool MB991923 (Power plant ECU check
harness) in between.

2. Measure the voltages between the check

connector terminals of special tool MB991923 and
ground terminals 63 or 76.

AC209259

4 3 2 1

7 6 5

8 9

11 10

14 13 12

18 17 16 15

25

21

24 23 22

29 28 27 26

34 33 32 31 30

38 37 36 35

43 42 41 40 39

55

56

54 53 52 51

57

62 61 60 59 58

63

69 68 67 66 65 64

70

75 74 73 72 71

76

82 81 80 79 78 77

83

104

96

94

95

93 92 91

99 98 97

103 102 101 100

108 107 106 105

113 112 111 110 109

127 126 125 124 123 122 121

133 132 131 130 129 128

140 139 138 137 136 135 134

146 145 144 143 142 141

153 152 151 150 149 148 147

AE

SPECIAL TOOL-POWER PLANT ECU CHECK HARNESS (MB991923) CONNECTOR: COMPONENT SIDE

33-PIN
CONNECTOR
(PCM CONNECTOR
B-23)

23-PIN
CONNECTOR
WITH RED TAPE
(PCM CONNECTOR
B-22)

33-PIN
CONNECTOR
(PCM CONNECTOR
B-21)

23-PIN
CONNECTOR
WITHOUT RED TAPE
(PCM CONNECTOR
B-20)

18-PIN
CONNECTOR
(PCM CONNECTOR
B-19)

TERMINAL
NO.

CHECK ITEM

CHECK CONDITION

NORMAL
CONDITION

9

Stoplight switch

Ignition
switch:
"ON"

Depress the brake pedal.

Battery positive
voltage

Release the brake pedal.

1V or less

12

Auto-cruise control
switch power supply

Ignition
switch:
"ON"

All switches: OFF

4.7

− 5.0 V

"CRUISE" (MAIN) switch: "ON"

0

− 0.3 V

"COAST/SET" switch: ON

2.0

− 2.8 V

"ACC/RES" switch: ON

3.3

− 4.1 V

"CANCEL" switch: ON

0.8

− 1.5 V

21

Accelerator pedal
position sensor (sub)
power supply

Ignition switch: "ON"

4.9

− 5.1 V

26

Accelerator pedal
position sensor
(main)

Ignition
switch:
"ON"

Release the accelerator pedal

0.7

− 1.3 V <2.4L

engine>
0.735

− 1.335 V <3.8L

engine>

Depress the accelerator pedal.

4.0 V or more

27

Accelerator pedal
position sensor (sub)

Ignition
switch:
"ON"

Release the accelerator pedal

0.4

− 1.0 V <2.4L

engine>
0.435

− 1.035 V <3.8L

engine>

Depress the accelerator pedal.

3.7 V or more

30

Accelerator pedal
position sensor
(main) power supply

Ignition switch: "ON"

4.9

− 5.1 V

33

Brake switch

Ignition
switch:
"ON"

Depress the brake pedal.

Battery positive
voltage

Release the brake pedal.

1V or less

AUTO-CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

17-68

83

Transmission range
switch: "P" and "N"

Ignition
switch:
"ON"

Transmission range switch: "P" or "N" Battery positive

voltage

Transmission range switch: Other
than above

1V or less

94

Throttle position
sensor power supply

Ignition switch: "ON"

4.9

− 5.1 V

98

Throttle position
sensor (sub)

• Remove the intake air

hose at the throttle body

• Disconnect the throttle

position sensor, and then
connect terminals 3, 4, 5
and 6 with the use of the
special tool: MB991658
(Test harness).

• Ignition switch: "ON"

Fully close the
throttle valve
with your finger

2.2

− 2.8 V

Fully open the
throttle valve
with your finger

4.0 V or more

99

Throttle position
sensor (main)

• Remove the intake air

hose at the throttle body

• Disconnect the throttle

position sensor, and then
connect terminals 3, 4, 5
and 6 with the use of the
special tool: MB991658.

• Ignition switch: "ON"

Fully close the
throttle valve
with your finger

0.3

− 0.7 V

Fully open the
throttle valve
with your finger

4.0 V or more

141

Throttle actuator
control motor (

−)

• Ignition switch: "ON"

• Accelerator pedal: fully closed to fully

opened

Decreases slightly
(approx. 2 V) from
battery voltage.

147

Throttle actuator
control motor (+)

• Ignition switch: "ON"

• Accelerator pedal: fully opened to fully

closed

Decreases slightly
(approx. 2 V) from
battery voltage.

TERMINAL
NO.

CHECK ITEM

CHECK CONDITION

NORMAL
CONDITION

AUTO-CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

17-69

SPECIAL TOOLS

M1172000600509

TOOL

TOOL NUMBER AND
NAME

SUPERSESSION

APPLICATION

MB991958

A: MB991824
B: MB991827
C: MB991910
D: MB991911
E: MB991914
F: MB991825
G: MB991826

MUT-III sub assembly

A: Vehicle

communication
interface (V.C.I.)

B: MUT-III USB cable
C: MUT-III main harness

A (Vehicles with CAN
communication
system)

D: MUT-III main harness

B (Vehicles without
CAN communication
system)

E: MUT-III main harness

C (for Daimler Chrysler
models only)

F: MUT-III measurement

adapter

G: MUT-III trigger

harness

MB991824-KIT
NOTE: G: MB991826
MUT-III trigger harness is
not necessary when
pushing V.C.I. ENTER
key.

Checking diagnostic
trouble codes

CAUTION

For vehicles with CAN
communication, use
MUT-III main harness A
to send simulated
vehicle speed. If you
connect MUT-III main
harness B or C instead,
the CAN
communication does
not function correctly.

MB991910

MB991826

MB991958

MB991911

MB991914

MB991824

MB991827

MB991825

DO NOT USE

A

B

C

D

E

F

G

DO NOT USE