Mitsubishi Evolution X. Manual — part 210

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-9

AUTO-CRUISE CONTROL

GENERAL INFORMATION

M1172000100742

By using the cruise control system, the driver can
drive at preferred speeds in a range of approximately
40 to 200 km/h (25 to 125 mph) without depressing
the accelerator pedal.

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

CONSTRUCTION DIAGRAM

AC708691

AC708693

AC708696

AC708692

CANCEL

ACC

RES

ON

OFF

COAST

SET

AC708694

AC708695

Cruise control switch

Data link connector

Hood
lock
release
handle

AB

Clutch switch <M/T>

Stoplight switch

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

Engine control
module (ECM)

"CRUISE" indicator light

Transaxle assembly
[Built-in twin clutch
-sportronic shift
transmission-ECU
(TC-SST-ECU)]
<TC-SST>

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

Hydraulic unit Assembly
(Built-in ASC-ECU)

Shift lever assembly
(Built-in shift lever ECU)
<TC-SST>

Steering wheel

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-10

AUTO-CRUISE CONTROL SYSTEM DIAGNOSIS

INTRODUCTION TO CRUISE CONTROL SYSTEM DIAGNOSIS

M1172003300358

The cruise control system allows driving without
stepping on the accelerator pedal by setting a ran-
dom speed between approximately 40 km/h (25
mph) and 200 km/h (125 mph). Malfunctions in this
system can be investigated by the following meth-
ods.

CRUISE CONTROL SYSTEM
DIAGNOSTIC TROUBLE CODES

The cruise control system consists of the ECM, con-
trol switches and sensors. The control switches and
sensors monitor the state of the vehicle. The ECM
controls the throttle valve opening angle in the throt-
tle body in accordance with the input signals from the
switches and sensors. If the ECM detects a malfunc-
tion on any of those components, the ECM estimates
where the problem may be occurring, and will set a
diagnostic trouble code (DTC). DTCs cover the
cruise control switch, stoplight switch and ECM.

DIAGNOSTIC TROUBLESHOOTING STRATEGY

M1172002000826

Use these steps to plan your diagnostic strategy. If
you follow them carefully, you will check most of the
possible causes of a cruise control system malfunc-
tion.
1. Gather information from the customer.
2. Verify that the condition described by the

customer exists.

3. Check the vehicle for any cruise control system

DTC (Refer to

P.17-10

, Diagnostic Function

− How

to Read Diagnostic Trouble Codes).

4. If you cannot verify the condition and there are no

cruise control system DTCs, the malfunction may
be intermittent (Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points

− How

to Cope with Intermittent Malfunctions

P.00-15

).

5. If you can verify the condition but there are no

cruise control system DTCs, find the fault (Refer
to

P.17-38

, Symptom Chart).

6. If there is an cruise control system DTC, record

the number of the code, then erase the code
(Refer to

P.17-10

, Diagnostic Function

− How to

Erase Diagnostic Trouble Codes).

7. Re-create the cruise control system DTC set

conditions to see if the same cruise control
system DTC will set again (Refer to

P.17-10

,

Diagnostic Function

− How to Read Diagnostic

Trouble Codes).

• If the same cruise control system DTC sets

again, perform the diagnostic procedures for the
set code (Refer to

P.17-13

, Diagnostic Trouble

Code Chart).

DIAGNOSTIC FUNCTION

M1172004900290

HOW TO READ DIAGNOSTIC TROUBLE CODES

CANCEL

ACC

RES

ON

OFF

COAST

SET

AC708694 AB

Cruise control switch

"ACC/RES"
switch

"COAST/SET"
switch

1. Turn the ignition switch to the "ON" position while press the

"COAST/SET" switch. Then, within one second, release the
"COAST/SET" switch and press the "ACC/RES" switch.

AC708693AB

"CRUISE" indicator light

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-11

2. Read a DTC by observing the flash display pattern of the

"CRUISE" indicator light in the combination meter.

Diagnostic result display method when using the "CRUISE" indicator light

When the DTC number 23 is set

When no DTC is set

AC604884

ON

OFF

Pause
time: 3 s

Ten digit

Digit
division: 2 s

First digit

0.5 s

1.5 s

AC

1.5 s

0.5 s

AC604885 AC

ON

OFF

0.25 s

Continuous ON and OFF signals
at intervals of 0.25 s

NOTE: Other on-board diagnostic items are also output as voltage waveforms corresponding to DTC num-
bers.

HOW TO ERASE DIAGNOSTIC TROUBLE CODES

Disconnect the negative (

−) battery cable.

HOW TO CONNECT THE SCAN TOOL (M.U.T.-III).

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-12

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
1. Start up the personal computer.
2. Connect special tool MB991827 to special tool MB991824

and the personal computer.

3. Connect special tool MB991910 to special tool MB991824.
4. Connect special tool MB991910 to the data link connector.
5. Turn the power switch of special tool MB991824 to the "ON"

position.
NOTE: When special tool MB991824 is energized, special
tool MB991824 indicator light will be illuminated in green
color.

6. Start the M.U.T.-III system on the personal computer.

NOTE: Disconnecting scan tool MB991958 is the reverse of
the connecting sequence, making sure that the ignition
switch is at the "LOCK" (OFF) position.

HOW TO READ DATA LIST

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "System Select" from the start-up screen.
4. Select "From 2006 MY" of "Model Year." When the "Vehicle

Information" is displayed, check the contents.

5. "Select "AUTO CRUISE" from "System List", and press the

"OK" button.
NOTE: When the "Loading Option Setup" list is displayed,
check the applicable item.

6. Select the "MITSUBISHI."
7. Select the "Data List."

NOTE: When the "Data List Reference Table" button is
selected, the service data reference table is displayed, and
the normal values can be checked.

8. Choose an appropriate item.
9. Turn the ignition switch to the "LOCK" (OFF) position.
10.Disconnect scan tool MB991958.