Mitsubishi Outlander GS45X. Manual - part 1678

AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>

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AUTOMATIC TRANSAXLE

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INTRODUCTION TO A/T DIAGNOSIS

M1231012300282

When the A/T is failed, have an interview with the 
user to gather precise information on the failure sta-
tus. After that, perform on-board test to check if the 
failure is reproduced, and then start repair work. If 
the repair work is started on the assumption that the 
A/T is the failure cause from the beginning, the 
cause would not be investigated, and moreover, the 
secondary failure may be caused, resulting in a 
waste of repair time.

Failures regarding the A/T are categorized as fol-
lows.
1. Poor adjustment, poor installation between the 

engine and body, and malfunction due to 
non-genuine device installation

2. Poor engine performance
3. Malfunction of the electronic control device
4. Malfunction of the A/T inside (hydraulic control 

system, etc.)

5. Others (oil leakage, damage, etc.)

A/T DIAGNOSTIC TROUBLESHOOTING STRATEGY

M1231007600384

Interview is the first step of the diagnosis. It requires 
a correct observation of the actual trouble symptom, 
and a proper judgment without preconceived idea. If 
the trouble symptom has occurred when the vehicle 
is brought, it is easy to check the fact. However, 
when the trouble has not occurred at that time, it is 
important to have an interview with the user to gather 
information about the reproduction conditions, and 
exert maximum effort to reproduce the trouble.
NOTE: These interviews should be listed up.
1. Does it occur when the engine is cold or after it is 

warmed up?

2. Does it occur on a specific road (slope, curve, 

long straight road, bumpy road, etc.)?

3. Does it occur with the vehicle speed in a specific 

range or at vehicle stop?

4. Does it occur during acceleration or deceleration?

5. Does it occur sometimes or consecutively?
6. Does it occur in the transmission range "P," "R," 

"N," or "D"?

7. Does it change in accordance with the vehicle 

speed or the engine speed?

8. Does it occur with a specific accelerator angle 

(e.g. half throttle)? Does it occur at the time of 
traffic jams?

9. Does it occur all of a sudden recently or has it 

been noticeable since the vehicle was delivered?

10.(Other) Does it occur after the vehicle 

experienced the following conditions?: Heavy 
load, rain, water passage or river, mountain road 
or rough road; Installation of car navigation, 
remote controlled starter, audio device, radio 
transmission equipment, theft prevention device, 
etc, Addition of battery fluid; Other vehicle 
troubles.

PRIMARY CHECK

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Basic adjustment and maintenance of the A/T needs 
to be checked.

Check items

1. Check the power supply voltage, and check the 

voltage with the engine stopped. (If malfunction 
occurs, charge or replace that.)

2. Check the transmission fluid for abnormalities of 

level, smell, fouling, and color.

3. Check the transaxle control cable and linkage. (If 

dislocation occurs, adjust that.) 

4. Check the connector connection, fouling, corro-

sion, and fixing status of the A/T-related electric 
wire.

5. Stall test (If the speed is below the specified 

value, check the engine side.)

6. Hydraulic pressure test
7. Engine idle speed, speed change occurrence (If 

a failure occurs, check the engine side.)

8. Check the presence of non-genuine devices (car 

navigation, remote controlled starter, audio 
device, radio transmission equipment, theft pre-
vention device, aeroparts, etc.), the presence of 
power supply wiring and the additional signal wir-
ing. Then, remove improper power supply, signal 
wiring, and parts to check. 

AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>

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AUTOMATIC TRANSAXLE

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DIAGNOSIS FUNCTION

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WARNING INDICATOR

When any malfunction occurs in the items related to the A/T 
system, which are described below, the symbol (A) continues 
being displayed in the information screen in the multi informa-
tion display.
Check if the diagnostic trouble code is set when the symbol (A) 
continues being displayed in the information screen in the multi 
information display.
NOTE: When the symbol (B) is displayed in the information 
screen in the multi information display, the transmission fluid 
temperature is high. (Symbol (B) is turned on when the fluid 
temperature is approximately 140

°

C (284

°

F)or higher and 

turned off automatically when the fluid temperature drops 
below approximately 135

°

C(275

°

F).)

NOTE: When transmission fluid becomes a high temperature, 
control to lower temperature of transmission fluid acts, and "D" 
is displayed of a run with sports mode by a shift indicator in a 
multi information display; and normal from sports mode; shifting 
is replaced automatically. In addition, there is the case that 
does not accept operation to sports mode. It is control to lower 
temperature of transmission fluid, and this phenomenon is not 
trouble. If temperature of transmission fluid falls, A/T returns to 
normal movement.

ON-BOARD DIAGNOSTICS

The transaxle control module (TCM) monitors its 
input/output signals (some signals all the time and 
others under specified conditions). When an irregular 
signal is initially monitored, the TCM decides that a 
malfunction has occurred and records the occur-
rence as a diagnostic trouble code. There are 39 
diagnostic items. The diagnostic results can be read 
with scan tool. Diagnostic trouble codes are kept in 
memory by direct battery feed. The codes are 

retained in memory even if the ignition switch is in 
the "LOCK" (OFF) position. DTCs are not erased 
even after the battery terminals and the TCM con-
nector are disconnected. In addition, the diagnostic 
trouble code can also be erased by scan tool.
NOTE: If a sensor is disconnected when the ignition 
switch is in the "ON" position, a diagnostic trouble 
code is stored in memory. In this case, erase the 
DTC using scan tool.
The 39 diagnostic items are displayed in numeric 
order.

HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)

Required Special Tools:

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

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

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

SLOW DOWN

SERVICE
         REQUIRED

AC607727

(A)

(B)

AB

AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>

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AUTOMATIC TRANSAXLE

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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.
NOTE: Disconnecting scan 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: 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

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 "ELC-A/T" from the "POWER TRAIN" tab.
6. Select "MITSUBISHI."
7. Select "Diagnostic Trouble Code."
8. If a DTC is set, it is shown.
9. Choose "Erase DTCs" to erase the DTC.

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link 
connector

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link 
connector

AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>

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AUTOMATIC TRANSAXLE

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HOW TO READ DATA LIST

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

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 "System select" from the start-up screen.
4. Select "From 2006 MY" of "Model Year." When the "Vehicle 

Information" is displayed, check the contents.

5. Select "ELC-A/T" from "System List", and press the "OK" 

button.

NOTE: When the "Loading Option Setup" list is displayed, 
check the applicable item.
6. Select "MITSUBISHI."
7. Select "Data List."
NOTE: When the "Data List Reference Table" button is 
selected, the service data reference table is displayed, and the 
normal values can be checked.

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link 
connector