Mitsubishi Galant 9G. Manual — part 447

ENGINE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-6

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.

DIAGNOSIS

Required Special Tools:

• MB991958: Scan 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

TSB Revision

ENGINE AND EMISSION CONTROL

17-7

STEP 2. Using scan tool MB991958, read the diagnostic
trouble code (DTC).

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 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 light 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 MFI system diagnostic trouble code. (Refer to

GROUP 13A, MFI Diagnosis

− Diagnostic Function − How

to Read and Erase Diagnostic Trouble Code

P.13A-6

)

<2.4L engine> or (Refer to GROUP 13B, MFI Diagnosis

−

Diagnostic Function

− How to Read and Erase Diagnostic

Trouble Code

P.13B-6

) <3.8L engine>.

(10)Turn the ignition switch to the "LOCK" (OFF) position, and

then remove scan tool MB991958 in the reverse order of
installation.

Q: Is any DTC set?

YES : Repair MFI system. (Refer to GROUP 13A, MFI

Diagnosis

− Diagnostic Trouble Code Chart

P.13A-33

) <2.4L engine> or (Refer to GROUP 13B,

MFI Diagnosis

− Diagnostic Trouble Code Chart

P.13B-34

) <3.8L engine>. 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.

AC305412

AB

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

ENGINE CONTROL

TSB Revision

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

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-9

ACCELERATOR PEDAL

REMOVAL AND INSTALLATION

M1171003000116

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.

AC307006AC

1

13 ± 2 N·m
111 ± 22 in-lb

2

3

N

REMOVAL STEPS

1. ACCELERATOR PEDAL POSITION

(APP) SENSOR CONNECTOR

2. ACCELERATOR PEDAL ASSEMBLY
3. ACCELERATOR STOPPER

REMOVAL STEPS (Continued)