engine MITSUBISHI 380 2005 Workshop Manual

ENGINE CONTROL
ENGINE AND EMISSION CONTROL17-6
INSPECTION PROCEDURE 2: Accelerator Pedal Operation Not Smooth (Over Acceleration)
.
COMMENT
The accelerator pedal, its installation condition or the
accelerator pedal position (APP) sensor is sus-
pected.
.
TROUBLESHOOTING HINTS (THE MOST
LIKELY CAUSES FOR THIS CASE:)
Malfunction of the accelerator pedal.
Incorrectly installed accelerator pedal.
Malfunction of the accelerator pedal position
(APP) sensor.
Circuit drawings
Refer to circuit diagrams GROUP-90
Refer to configuration diagrams GROUP-80
Refer to component locations GROUP-70
DIAGNOSIS
Required Special Tools:
MB991958: Diagnostic Tool (MUT-III Sub Assembly)
MB991824: V.C.I.
MB991827: MUT-III USB Cable
MB991910: MUT-III Main Harness A
STEP 1. Check if the accelerator pedal is installed
correctly.
Q: Is the accelerator pedal installed correctly?
YES : Go to Step 2.
NO : Replace and reinstall the accelerator pedal. (Refer to
P.17-9). Go to Step 3.

ENGINE CONTROL
ENGINE AND EMISSION CONTROL17-7
STEP 2. Using Diagnostic Tool MB991958, read the
diagnostic trouble code (DTC).
To prevent damage to Diagnostic Tool MB991958, always
turn the ignition switch to the "LOCK" (OFF) position
before connecting or disconnecting Diagnostic 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 MB991910 to special tool MB991824.
(5) Connect special tool MB991910 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 lamp will be illuminated in a green
color.
(7) Start the MUT-III system on the personal computer.
(8) Turn the ignition switch to the "ON" position.
(9) Check for MPI system diagnostic trouble code.(Refer to
GROUP 13A, MPI Diagnosis
Diagnostic Function How
to Read and Erase Diagnostic Trouble Code 13A-6) .
(10)Turn the ignition switch to the "LOCK" (OFF) position, and
then remove Diagnostic Tool MB991958 in the reverse
order of installation.
Q: Is any DTC set?
YES : Repair MPI system.(Refer to GROUP 13A, MPI
Diagnosis
Diagnostic Trouble Code Chart 13A-17) .
Then go to Step 3.
NO : Go to Step 3.
STEP 3. Retest the system.
Q: Does the accelerator pedal work normally?
YES : The procedure is complete.
NO : Return to Step 1.

ENGINE CONTROL
ENGINE AND EMISSION CONTROL17-8
SPECIAL TOOLM1171000600045
TOOL TOOL NUMBER AND
NAMESUPERSESSION 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
harnessMB991824-KIT
NOTE: G:
MB991826 MUT-III
trigger harness is
not necessary
when pushing
V.C.I. ENTER key.Checking diagnostic trouble
codes
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.

ENGINE CONTROL
ENGINE AND EMISSION CONTROL17-9
ACCELERATOR PEDAL
REMOVAL AND INSTALLATIONM1171003000116
REMOVAL STEPS
1. ACCELERATOR PEDAL POSITION
(APP) SENSOR CONNECTOR2. ACCELERATOR PEDAL ASSEMBLY
3. ACCELERATOR STOPPERREMOVAL STEPS (Continued)

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-10
AUTO-CRUISE CONTROL
GENERAL DESCRIPTIONM1172000100281
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 DIAGNOSISM1172003300251
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
91
01
1
12
1
31
41
5
16 123
456
78

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-11
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 STRATEGYM1172002000484
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 Malfunctions 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 FUNCTIONM1172004900171
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

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-12
To prevent damage to Diagnostic Tool MB991958, always
turn the ignition switch to the "LOCK" (OFF) position
before connecting or disconnecting Diagnostic 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 MB991910 to special tool MB991824.
5. Connect special tool MB991910 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 lamp will be illuminated in green
color.
7. Start the MUT-III system on the personal computer.
NOTE: Disconnecting Diagnostic 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 Tools:
MB991958: Diagnostic Tool (MUT-III Sub Assembly)
MB991824: V.C.I.
MB991827: MUT-III USB Cable
MB991910: MUT-III Main Harness A
To prevent damage to Diagnostic Tool MB991958, always
turn the ignition switch to the "LOCK" (OFF) position
before connecting or disconnecting Diagnostic Tool
MB991958.
NOTE: If the battery voltage is low, diagnostic trouble codes
will not be set. Check the battery if Diagnostic Tool
MB991958 does not display.
1. Connect Diagnostic Tool MB991958 to the data link
connector.
2. Turn the ignition switch to the "ON" position.
3. Depress the "CRUISE" (MAIN) switch to illuminate the
"CRUISE" indicator lamp in the combination meter.
4. Select the "Interactive Diagnosis" from the start-up screen.
5. Select the "System Select."
6. Choose the "Auto-cruise Control System" .
7. Select the "Diagnostic Trouble Code."
8. If a DTC is set, it is shown.
9. Choose the "DTC erase" to erase the DTC.
10.Turn the ignition switch to the "LOCK" (OFF) position.

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-13
11.Disconnect Diagnostic Tool MB991958.
HOW TO READ DATA LIST
Required Special Tools:
MB991958: Diagnostic Tool (MUT-III Sub Assembly)
MB991824: V.C.I.
MB991827: MUT-III USB Cable
MB991910: MUT-III Main Harness A
To prevent damage to Diagnostic Tool MB991958, always
turn the ignition switch to the "LOCK" (OFF) position
before connecting or disconnecting Diagnostic Tool
MB991958.
1. Connect Diagnostic Tool MB991958 to the data link
connector.
2. Turn the ignition switch to the "ON" position.
3. Select the "Interactive Diagnosis" from the start-up screen.
4. Select the "System Select."
5. Choose the "Auto-cruise Control System" .
6. Select the "Data List."
7. Choose an appropriate item.
8. Turn the ignition switch to the "LOCK" (OFF) position.
9. Disconnect Diagnostic Tool MB991958.
HOW TO DIAGNOSE THE CAN BUS LINE
Required Special Tools:
MB991958: Diagnostic Tool (MUT-III Sub Assembly)
MB991824: V.C.I.
MB991827: MUT-III USB Cable
MB991910: MUT-III Main Harness A

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-14
To prevent damage to Diagnostic Tool MB991958, always
turn the ignition switch to the "LOCK" (OFF) position
before connecting or disconnecting Diagnostic Tool
MB991958.
1. Connect Diagnostic Tool MB991958 to the data link
connector.
2. Turn the ignition switch to the "ON" position.
3. Select the "CAN bus diagnosis" from the start-up screen.
4. When the vehicle information is displayed, confirm that it
matches the vehicle whose CAN bus lines will be
diagnosed.
If the information is correct, go to step 8.
If not, go to step 5.
5. Select the "view vehicle information" button.
6. Enter the vehicle information and select the "OK" button.
7. When the vehicle information is displayed, confirm again
that it matches the vehicle which is diagnosed CAN bus line.
If they match, go to step 8.
If not, go to step 5.
8. Press the "OK" button.
9. When the optional equipment screen is displayed, choose
the one which the vehicle is fitted with, and then select the
"OK" button.
10.Turn the ignition switch to the "LOCK" (OFF) position.
11.Disconnect Diagnostic Tool MB991958.
DIAGNOSTIC TROUBLE CODE CHARTM1172002200295
Check according to the inspection chart that is
appropriate for the diagnostic trouble code.
DTC NO. INSPECTION ITEM REFERENCE PAGE
P0830 Clutch switch system
P.17-15
P1564 Auto-cruise control switch system
P.17-20
P1575 Cancel latch signal system
P.17-34
P1571 Stoplamp switch system
P.17-35
P1574
Engine ECU and its related componentsP.17-50

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-15
DIAGNOSTIC TROUBLE CODE PROCEDURES
DTC P0830: Clutch Switch (5M/T Only)
.
CIRCUIT OPERATION
A 5 Volt power supply is applied to the clutch
switch output terminal (terminal No. 1) from the
ENGINE-ECU(terminal No. B-21 pin 41) when
the clutch pedal is applied the power supply is
switched to earth.
.
TECHNICAL DESCRIPTION
The ENGINE-ECU uses the clutch switch earth-
ing as a signal that clutch pedal has been
applied.
.
DTC SET CONDITIONS
Check Conditions
Vehicle speed is above 50 km/h.Judgement Criteria
Gear shift is above 5 times.
Clutch control is below 2 times.
No MIL.
No Limp home.
.
TROUBLESHOOTING HINTS (The most
likely causes for this code to be set are:)
Clutch switch failed
Harness damage in clutch switch circuit, or con-
nector damage.
Refer to component locations GROUP-70
Refer to configuration diagrams GROUP-80
Refer to circuit diagrams GROUP-90
DIAGNOSIS
Required Special Tools:
: Diagnostic tool (MUT-III Sub Assembly)
MB991824: V.C.I.
MB991827: USB Cable
MB991910: Main Harness A