Mitsubishi Montero (2004+). Manual — part 401

AUTO-CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

17-11

SPECIAL TOOLS

M1172000600338

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

MUT-III Main Harness B
(MB991911) should be
used. MUT-III main
harness A and C should
not be used for this
vehicle.

MB991910

MB991826

MB991958

MB991911

MB991914

MB991824

MB991827

MB991825

DO NOT USE

A

B

C

D

E

F

G

DO NOT USE

AUTO-CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

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AUTO-CRUISE CONTROL SYSTEM DIAGNOSIS

INTRODUCTION TO AUTO-CRUISE CONTROL SYSTEM DIAGNOSIS

M1172003300284

The auto-cruise control system allows driving without
stepping on the accelerator pedal by setting a ran-
dom speed between 40 km/h (25 mph) and 200 km/h
(124 mph). Problems in this system can be investi-
gated by the following methods.

Auto-cruise control system diagnostic
trouble codes

The auto-cruise control system consists of the
powertrain control module (PCM), control switches
and sensors. The control switches and sensors mon-
itor the state of the vehicle. The PCM controls the
throttle valve opening angle in the throttle body in

accordance with the input signals from the switches
and sensors. If the PCM detects a problem on any of
those components, the PCM estimates where the
problem may be occurring, and will output a diagnos-
tic trouble code. Diagnostic trouble codes cover the
auto-cruise control switch, stoplight switch and PCM.

AUTO-CRUISE CONTROL SYSTEM DIAGNOSTIC TROUBLESHOOTING STRATEGY

M1172002000309

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

customer exists.

3. Check the vehicle for any auto-cruise control

system DTC.

4. If you can verify the condition but no auto-cruise

control system DTCs are set, and the malfunction
may be intermittent. Refer to GROUP 00, How to
Use Troubleshooting/Inspection Service Points

−

How to Cope with Intermittent Malfunctions

P.00-6

.

MB991223
A: MB991219
B: MB991220
C: MB991221
D: MB991222
Harness set
A: Inspection harness
B: LED harness
C: LED harness adapter
D: Probe

General service tools

Checking the continuity
and measuring the
voltage at the harness
connector

MB991348
Test harness set

MB991348-01

Checking throttle position
sensor

TOOL

TOOL NUMBER AND
NAME

SUPERSESSION

APPLICATION

MB991223

A

D

C

B

AD

MB991348

AUTO-CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

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

auto-cruise control system DTCs, or the system
cannot communicate with scan tool MB991502,
refer to Symptom Chart

P.17-39

and find the fault.

6. If there is an auto-cruise control system DTC,

record the number of the code, then erase the
code from vehicle memory using the scan tool.

7. Re-create the auto-cruise control system DTC set

conditions to see if the same Auto-cruise Control
System DTC will set again.

• If the same Auto-cruise Control System DTC sets

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

P.17-15

, Auto-cruise Control

System Diagnostic Trouble Code Chart.

AUTO-CRUISE CONTROL SYSTEM DIAGNOSTIC
FUNCTION

M1172004900085

HOW TO CONNECT THE SCAN TOOL (MUT-III).

Required Special Tool:

• MB991958: Scan tool (MUT-III sub assembly)

• MB991824: Vehicle communication interface (V.C.I.)

• MB991827: MUT-III USB cable

• MB991911: MUT-III main harness B

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. Ensure that the ignition switch is at the "LOCK" (OFF)

position.

2. Start up the personal computer.
3. Connect special tool MB991827 to special tool MB991824

and the personal computer.

4. Connect special tool MB991911 to special tool MB991824.
5. Connect special tool MB991911 to the data link connector.
6. 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 an green
color.

7. Start the MUT-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 AND ERASE DIAGNOSTIC
TROUBLE CODES

Required Special Tool:

• MB991958: Scan tool (MUT-III sub assembly)

• MB991824: V.C.I.

• MB991827: MUT-III USB cable

• MB991911: MUT-III main harness B

AC306409AF

MB991911

MB991824

MB991827

AUTO-CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

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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.

NOTE: If the battery voltage is low, diagnostic trouble codes
will not be set. Check the battery if scan tool MB991958
does not display.

1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "Interactive Diagnosis" from the start-up screen.
4. Select "System Select."
5. Choose "AUTO-CRUISE" from the "POWERTRAIN" tab.
6. Select "Diagnostic Trouble Code."
7. If a DTC is set, it is shown.
8. Choose "DTC erase" to erase the DTC.
9. Turn the ignition switch to the "LOCK" (OFF) position.
10.Disconnect scan tool MB991958.

HOW TO READ DATA LIST

Required Special Tool:

• MB991958: Scan tool (MUT-III sub assembly)

• MB991824: V.C.I.

• MB991827: MUT-III USB cable

• MB991911: MUT-III main harness B

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. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "Interactive Diagnosis" from the start-up screen.
4. Select "System Select."
5. Choose "AUTO-CRUISE" from the "POWERTRAIN" tab.
6. Select "Data List."
7. Choose an appropriate item.
8. Turn the ignition switch to the "LOCK" (OFF) position.
9. Disconnect scan tool MB991958.

AC306409AF

MB991911

MB991824

MB991827

AC306409AF

MB991911

MB991824

MB991827