Mitsubishi Eclipse. Manual - part 702

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-89

AUTO-CRUISE CONTROL SYSTEM COMPONENT 
CHECK

M1172001700286

Stoplight Switch

1. Disconnect the connector.
2. Check for continuity between the terminals of the switch.

Clutch Pedal Position Switch

1. Disconnect the connector.
2. Check for continuity between the terminals of the switch.

Transmission Range Switch ("N" Position)

Refer to GROUP 23A, On-vehicle Service 

− Essential Service 

P.23A-408

.

Throttle Position Sensor

For 2.4L engine, refer to GROUP 13A, On-vehicle Service 

− 

Throttle Position Sensor Check 

P.13A-936

.

For 3.0L engine, refer to GROUP 13B, On-vehicle Service 

− 

Throttle Position Sensor Check 

P.13B-1109

.

MEASUREMENT 
CONDITION

TERMINAL 
CONNECTOR 
OF TESTER

SPECIFIED 
CONDITION

When brake pedal is 
depressed. (for 
stoplight circuit)

1 

− 2

Less than 2 ohms

3 

− 4

Open circuit

When brake pedal is 
not depressed. (for 
auto-cruise control 
circuit)

1 

− 2

Open circuit

3 

− 4

Less than 2 ohms

ACX01180 AB

MEASUREMENT 
CONDITION

TERMINAL 
CONNECTOR 
OF TESTER

SPECIFIED 
CONDITION

When clutch pedal is 
depressed.

1 

− 2

Less than 2 ohms

When clutch pedal is 
not depressed.

1 

− 2

Open circuit

ACX01180 AB

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-90

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

TSB Revision

ENGINE AND EMISSION CONTROL

17-91

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 

P.54A-112

.

SWITCH 
POSITION

TERMINAL 
CONNECTOR 
OF TESTER

SPECIFIED 
CONDITION

"MAIN" switch 
"OFF"

1 

− 2

Open circuit

"MAIN" switch "ON" 1 

− 2

Approximately 3.9 k

Ω

"CANCEL" switch 
"ON"

2 

− 3

Less than 2 ohms

"RESUME" switch 
"ON"

2 

− 3

Approximately 910 

Ω

"SET" switch "ON"

2 

− 3

Approximately 220 

Ω

ACX01178 AB

OFF

OFF

OFF

OFF

ON

ON

ON

ON

CAN

MAIN

RES

SET

1

2

3

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-92

AUTO-CRUISE CONTROL

REMOVAL AND INSTALLATION

M1172001400241

<ACTUATOR>

AC001494

<2.4L ENGINE>

2

1

1

4

5

6

7

3

<3.0L ENGINE>

AB

REMOVAL STEPS

1.

VACUUM HOSE

2.

VACUUM PIPE

3.

WIRING CONNECTOR

4.

VACUUM PUMP ASSEMBLY

5.

SPACER

6.

RUBBER MOUNT

7.

PUMP BRACKET

REMOVAL STEPS (Continued)