Mitsubishi Outlander GS45X. Manual — part 1589

ENGINE CONTROL

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ENGINE AND EMISSION CONTROL

17-5

STEP 1. Using scan tool MB991958, read the MFI system
diagnostic trouble code.

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 M.U.T.-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, Diagnostic Function

− How to Read and

Erase Diagnostic Trouble Codes

P.13A-11

) <2.4L Engine>

or (Refer to GROUP 13B, Diagnostic Function

− How to

Read and Erase Diagnostic Trouble Codes

P.13B-11

)

<3.0L 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, Diagnostic

Trouble Code Chart

P.13A-49

) <2.4L Engine> or

(Refer to GROUP 13B, Diagnostic Trouble Code
Chart

P.13B-50

) <3.0L Engine>. Then go to Step 2.

NO : Go to Step 2.

STEP 2. Retest the system.
Q: Does the throttle valve fully open and close?

YES : The procedure is complete.
NO : Return to Step 1.

ZC501967

AC404789

AC703845AB

MB991824

MB991827

MB991910

Data link

connector

ENGINE CONTROL

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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
APP sensor is suspected.

.

TROUBLESHOOTING HINTS (The most
likely causes for this case:)

• Malfunction of the accelerator pedal.

• Incorrectly installed accelerator pedal.

• Malfunction of the APP sensor.

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-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 : Remove and reinstall the accelerator pedal (Refer to

P.17-9

). Then go to Step 3.

ENGINE CONTROL

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ENGINE AND EMISSION CONTROL

17-7

STEP 2. Using scan tool MB991958, read the MFI system
diagnostic trouble code.

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 M.U.T.-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, Diagnostic Function

− How to Read and

Erase Diagnostic Trouble Codes

P.13A-11

) <2.4L Engine>

or (Refer to GROUP 13B, Diagnostic Function

− How to

Read and Erase Diagnostic Trouble Codes

P.13B-11

)

<3.0L 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, Diagnostic

Trouble Code Chart

P.13A-49

) <2.4L Engine> or

(Refer to GROUP 13B, Diagnostic Trouble Code
Chart

P.13B-50

) <3.0L 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.

ZC501967

AC404789

AC703845AB

MB991824

MB991827

MB991910

Data link

connector

ENGINE CONTROL

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ENGINE AND EMISSION CONTROL

17-8

SPECIAL TOOL

M1171000600164

Tool

Tool number and name Supersession

Application

MB991958

a. MB991824
b. MB991827
c. MB991910
d. MB991911
e. MB991914
f. MB991825
g. MB991826

M.U.T.-III sub assembly

a. Vehicle

communication
interface (V.C.I.)

b. M.U.T.-III USB cable
c. M.U.T.-III main

harness A (Vehicles
with CAN
communication
system)

d. M.U.T.-III main

harness B (Vehicles
without CAN
communication
system)

e. M.U.T.-III main

harness C (for
Chrysler models only)

f. M.U.T.-III

measurement adapter

g. M.U.T.-III trigger

harness

MB991824-KIT
NOTE: g:
MB991826
M.U.T.-III trigger
harness is not
necessary when
pushing V.C.I.
ENTER key.

CAUTION

For vehicles with CAN
communication, use M.U.T.-III
main harness A to send
simulated vehicle speed. If
you connect M.U.T.-III main
harness B or C instead, the
CAN communication does not
function correctly.
Checking diagnostic trouble
codes

MB991910

MB991826

MB991958

MB991911

MB991914

MB991824

MB991827

MB991825

DO NOT USE

a

b

c

d

e

f

g

DO NOT USE