Mitsubishi 380. Manual - part 335

 

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Mitsubishi 380. Manual - part 335

 

 

ENGINE CONTROL

ENGINE AND EMISSION CONTROL

17-8

SPECIAL TOOL

M1171000600045

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 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

ENGINE CONTROL

ENGINE AND EMISSION CONTROL

17-9

ACCELERATOR PEDAL

REMOVAL AND INSTALLATION

M1171003000116

1

13 ± 2 N·m
111 ± 22 in-lb

2

3

REMOVAL STEPS

1. ACCELERATOR PEDAL POSITION 

(APP) SENSOR CONNECTOR

2. ACCELERATOR PEDAL ASSEMBLY
3. ACCELERATOR STOPPER

REMOVAL STEPS (Continued)

AUTO-CRUISE CONTROL

ENGINE AND EMISSION CONTROL

17-10

AUTO-CRUISE CONTROL

GENERAL DESCRIPTION

M1172000100281

By using the auto-cruise control system, the driver 
can select and maintain a desired cruising speed 
[between 40 km/h (25 mph) and 200 km/h (124 
mph)] without depressing the accelerator pedal.

NOTE: If engine speed reaches and exceeds 6000 
r/min the Auto Cruise Control System will be can-
celled automatically.

CONSTRUCTION DIAGRAM

AUTO-CRUISE CONTROL SYSTEM DIAGNOSIS

INTRODUCTION TO AUTO-CRUISE CONTROL SYSTEM DIAGNOSIS

M1172003300251

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  
Engine ECU, control switches and sensors. The con-
trol switches and sensors monitor the state of the 
vehicle. The Engine ECU controls the throttle valve 
opening angle in the throttle body in accordance with 
the input signals from the switches and sensors. If 
the Engine ECU detects a problem on any of those 

17DB039A

AC20619

AC305701

AC305702

9 10 11 12 13 14 15 16

1 2 3 4 5 6 7 8

AC30570

STOPLIGHT SWITCH

ENGINE

     ECU

TRANSMISSION
RANGE SWITCH

THROTTLE BODY
(BUILT-IN THROTTLE
POSITION SENSOR
AND THROTTLE
ACTUATOR CONTROL
MOTOR)

"CRUISE" INDICATOR
LIGHT

AUTO-CRUISE
CONTROL SWITCH

DATA LINK
CONNECTOR

ACCELERATOR PEDAL
(BUILT-IN ACCELERATOR
PEDAL POSITION SENSOR)

AUTO-CRUISE CONTROL

ENGINE AND EMISSION CONTROL

17-11

components, the Engine ECU estimates where the 
problem may be occurring, and will set a diagnostic 
trouble code. Diagnostic trouble codes cover the 
auto-cruise control switch, stoplamp switch and 
Engine ECU.

DIAGNOSTIC TROUBLESHOOTING STRATEGY

M1172002000484

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. (Refer to 

P.17-11

, Diagnostic 

Function 

− How to Read and Erase Diagnostic 

Trouble Codes).

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

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

− How 

to Cope with Intermittent Malfunction

P.00-14

).

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

auto-cruise control system DTCs, or the system 
cannot communicate with Diagnostic Tool 
MB991958 (MUT-III sub assembly), and find the 
fault. (Refer to 

P.17-53

, Symptom Chart).

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

record the number of the code, then erase the 
code from Engine ECU memory using the 
Diagnostic Tool MB991958 (MUT-III sub 
assembly). (Refer to 

P.17-11

, Diagnostic Function 

− How to Read and Erase Diagnostic Trouble 
Codes).

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

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

P.17-11

Diagnostic Function 

− How to Read and Erase 

Diagnostic Trouble Codes).

• If the same Auto-cruise Control System DTC sets 

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

P.17-14

, Diagnostic Trouble 

Code Chart).

DIAGNOSTIC FUNCTION

M1172004900171

HOW TO CONNECT THE DIAGNOSTIC TOOL.

Required Special Tools:

• MB991958: Diagnostic Tool (MUT-III Sub Assembly)

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

• MB991827: MUT-III USB Cable

• MB991910: MUT-III Main Harness A

 

 

 

 

 

 

 

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