Mitsubishi Montero Sport (2004+). Manual - part 103

 

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Mitsubishi Montero Sport (2004+). Manual - part 103

 

 

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-7

AUTO-CRUISE CONTROL SYSTEM DIAGNOSIS

INTRODUCTION TO AUTO-CRUISE CONTROL SYSTEM DIAGNOSIS

M1172003300198

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).
Troubles in this system can be investigated by the 
following methods.

.

Auto-cruise control system diagnostic trouble 
codes
The auto-cruise control system consists of the 
auto-cruise control-ECU, control switches, sensors, 
and vacuum pump. If the auto-cruise control-ECU 
detects a problem on any of those components, the 
ECU estimates where the problem may be occurring, 
and will output a diagnostic trouble code.

The control switches and sensors monitor the state 
of the vehicle.
Based on input signals from those switches and sen-
sors, the auto-cruise control-ECU activates the vac-
uum pump.
Diagnostic trouble codes cover the throttle position 
sensor, auto-cruise control switch, vehicle speed 
sensor, auto-cruise control-ECU and vacuum pump.

AUTO-CRUISE CONTROL SYSTEM DIAGNOSTIC TROUBLESHOOTING STRATEGY

M1172002000202

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 and there are no 

auto-cruise control system DTCs, and the 
malfunction is intermittent, refer to GROUP 00, 
How to Use Troubleshooting/Inspection Service 
Points 

− How to Cope with Intermittent 

Malfunctions 

P.00-7

.

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

auto-cruise control system DTCs, or the system 
cannot communicate with the scan tool, check 
that the auto-cruise control system is operating 
properly.

• If the auto-cruise control system is operating 

properly, refer to 

P.17-91

, Auto-cruise Control 

System Data List Reference Table.

• If the auto-cruise control system is operating 

properly, refer to 

P.17-11

, Auto-cruise Control 

System Diagnostic Trouble Code Chart.

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.17-11

, Auto-cruise Control 

System Diagnostic Trouble Code Chart.

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-8

AUTO-CRUISE CONTROL SYSTEM DIAGNOSTIC 
FUNCTION

M1172004900096

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

Required Special Tools:

• 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 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.

AK303629AB

MB991911

MB991827

MB991824 

16-PIN

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-9

HOW TO READ AND ERASE DIAGNOSTIC 
TROUBLE CODES

.

Using scan tool (MUT-III)

Required Special Tools:

• 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.

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.

.

Using a Auto-cruise Control Indicator Light
1. Turn the ignition switch to the "ON" position while holding 

the auto-cruise control switch in the "SET" (down) position. 
Then, within one second, more the cruise control switch up 
to the "RES" position.

2. Read a diagnostic trouble code by observing the flash 

display pattern of the auto-cruise control indicator light in the 
combination meter.

.

AK303629AB

MB991911

MB991827

MB991824 

16-PIN

ACX01172

AB

AUTO-CRUISE
CONTROL
SWITCH

SET
SWITCH: ON

RESUME
SWITCH: ON

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-10

DIAGNOSTIC RESULT DISPLAY METHOD WHEN USING THE AUTO-CRUISE CONTROL INDICATOR 
LIGHT

NOTE: Other on-board diagnostic items are also output as voltage waveforms corresponding to diagnostic 
trouble code numbers.

HOW TO READ DATA LIST

Required Special Tools:

• 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.

WHEN THE DIAGNOSTIC TROUBLE CODE NO.14 IS SET

WHEN NO DIAGNOSTIC TROUBLE CODE 
IS SET

ACX01173

12V

0V

PAUSE
TIME: 3 s

TEN-
DIGIT

DIGIT
DIVISION:
2 s

FIRST DIGIT

0.5 s

1 s

AB

ACX01174 AB

12V

0V

0.5 s

CONTINUOUS ON AND OFF
SIGNALS AT INTERVALS OF 0.5 s

AK303629AB

MB991911

MB991827

MB991824 

16-PIN

 

 

 

 

 

 

 

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