2005 MITSUBISHI 380 ignition

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-65
DATA LIST REFERENCE TABLE - Auto Cruise ControlM1172002400471
When shifting the selector lever to "D" range, apply the brakes so that the vehicle does not move
forward.
Driving tests always need two persons: one driver and one observer.
NOTE: *:After the inspection is completed, disconnect the throttle position sensor connector, and then delete
the diagnostic trouble code using use of Diagnostic Tool MB991958. (Refer to P.17-11).
MUT-III
Diagnostic
To o l
DISPLAYITEM
NO.INSPECTION ITEM INSPECTION REQUIREMENT NORMAL
CONDITION
APS
SNS(MAIN)11 A c c e l e r a t o r p e d a l
position sensor (main)Ignition
switch:
"ON"Accelerator pedal: Released
435
1,035 mV
Accelerator pedal: Gradually
depressedIncreases in
response to the
pedal depression
stroke
Accelerator pedal: Fully
depressed4,000 mV or more
BRAKE SW 89 Stoplamp switch Brake pedal: Depressed ON
Brake pedal: Released OFF
CANCEL
CODE57 Cancel code Ignition switch: "ON" The cancel code,
which set when the
auto-cruise control
system was
cancelled at the
last time, is set
again.
CANCEL
SWITCH75 Auto-cruise
control
switchCANCEL "CANCEL" switch: ON ON
"CANCEL" switch: OFF OFF
CLUTCH SW 78 Transmission inhibitor
switchTransmission inhibitor switch: "P" or
"N"ON
Transmission inhibitor switch: Other
than aboveOFF
CRUISE 81 Auto-cruise control
system operationAuto-cruise control system: active ON
Auto-cruise control system: Inactive OFF
MAIN SW 86 Auto-cruise
control
switchCRUISE
(MAIN)"CRUISE" (MAIN) switch: "ON" ON
"CRUISE" (MAIN) switch: "OFF" OFF
RESUME
SWITCH91 Auto-cruise
control
switchACC/RES "ACC/RES" switch: ON ON
"ACC/RES" switch: OFF OFF
SET SWITCH 92 Auto-cruise
control
switchCOAST/S
ET"COAST/SET" switch: ON ON
"COAST/SET" switch: OFF OFF
STOPLIGHT
SW74 Stoplamp switch Brake pedal: Depressed ON
Brake pedal: Released OFF

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-67
ENGINE ECU TERMINAL VOLTAGE REFERENCE CHART FOR AUTO-CRUISE
CONTROL SYSTEM OPERATION
M1172004800055
1. Disconnect the Engine ECU connectors B-20,
B-21, and connect special tool MB992044
(ENGINE ECU check harness) in between.2. Measure the voltages between the check
connector terminals of special tool MB992044 and
ground connector B-21 terminals 4 or 6.
TERMINAL
NO.CHECK ITEM CHECK CONDITION NORMAL
CONDITION
18 (B-21) Stoplamp switch Ignition
switch:
"ON"Depress the brake pedal. Battery positive
voltage
Release the brake pedal. 1V or less
14 (B-21) Auto-cruise control
switch power supplyIgnition
switch:
"ON"All switches: OFF 4.7
5.0 V
"CRUISE" (MAIN) switch: "ON" 0
0.3 V
"COAST/SET" switch: ON 2.0
2.8 V
"ACC/RES" switch: ON 3.3
4.1 V
"CANCEL" switch: ON 0.8
1.5 V
76 (B-21) Accelerator pedal
position sensor (sub)
power supplyIgnition switch: "ON" 4.9
5.1 V
59 (B-21) Accelerator pedal
position sensor
(main)Ignition
switch:
"ON"Release the accelerator pedal
0.435
1.035 V
Depress the accelerator pedal. 4.0 V or more
81 (B-21) Accelerator pedal
position sensor (sub)Ignition
switch:
"ON"Release the accelerator pedal
0.435
1.035 V
Depress the accelerator pedal. 4.0 V or more
75 (B-21) Accelerator pedal
position sensor
(main) power supplyIgnition switch: "ON" 4.9
5.1 V
21 (B-21) Brake switch Ignition
switch:
"ON"Depress the brake pedal. 1V or less
Release the brake pedal. 1V or less
9 (B-20) Transmission inhibitor
switch: "P" and "N"
Crank switch signalIgnition
switch:
"ON"Transmission inhibitor switch: "P" or
"N" Crank switch signalBattery positive
voltage
Transmission inhibitor switch: Other
than above1V or less

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-68
If the air intake duct is removed from the throttle body take great care to keep fingers away
from the throttle plate. The drive motor has very high torque and is capable of random move-
ment at any time. Do not under any circumstances activate the throttle plate by hand.
When removing the throttle body from the intake manifold disconnect the wiring first. During
replacement connect the wiring last.
Do not activate the throttle body using a DC suppy to test the motor,as permanent damage to
the throttle body will result.
10 (B-20) Throttle position
sensor power supplyIgnition switch: "ON" 4.9 5.1 V
57 (B-20) Throttle position
sensor (sub)(1) Accelerator pedal:
Released
(2) Accelerator pedal:
Depressed(1) Throttle
valve fully
closed1035
1250 mV
(2) Throttle
valve fully open4000 mV or more
42 (B-20) Throttle position
sensor (main)(1) Accelerator pedal:
Released
(2) Accelerator pedal:
Depressed(1) Throttle
valve fully
closed1035
1250 mV
(2) Throttle
valve fully open4000 mV or more
49 (B-20) Throttle actuator
control motor (
)
Ignition switch: "ON"
Accelerator pedal: fully closed to fully
openedDecreases slightly
(approx. 2 V) from
battery voltage.
50 (B-20) Throttle actuator
control motor (+)
Ignition switch: "ON"
Accelerator pedal: fully opened to fully
closedDecreases slightly
(approx. 2 V) from
battery voltage. TERMINAL
NO.CHECK ITEM CHECK CONDITION NORMAL
CONDITION

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-71
ON-VEHICLE SERVICE
AUTO-CRUISE CONTROL SWITCH CHECKM1172001200054
AUTO-CRUISE CONTROL MAIN SWITCH CHECK
1. Turn the ignition switch to the "ON" position.
2. Check that the "CRUISE" indicator lamp within the
combination meter illuminates when the "CRUISE" (MAIN)
switch is switched "ON".
AUTO-CRUISE CONTROL SETTING
1. Switch "ON" the "CRUISE" (MAIN) switch.
2. Drive at the desired speed, above approximately 40 km/h.
3. Push the auto-cruise control switch in the direction of the
arrow.
4. Check to be sure that when the switch is released the speed
is the desired constant speed.
NOTE: If the vehicle speed decreases to approximately 15
km/h below the set speed because of climbing a hill for
example, it is normal for the auto-cruise control to be can-
celled.

AUTOMATIC TRANSMISSION DIAGNOSIS
AUTOMATIC TRANSMISSION23A-13
A/T DIAGNOSTIC TROUBLESHOOTING STRATEGYM1231007600339
Use these steps to plan your diagnostic strategy. If
you follow them carefully, you will find most A/T mal-
functions.
1. Gather as much information as possible about the
complaint from the customer.
2. Verify that the condition described by the
customer exists.
3. Check the vehicle for any A/T Diagnostic Trouble
Codes (DTCs).
4. If you can not verify the condition and there are no
DTCs, the malfunction is intermittent. For
information on how to cope with intermittent
malfunctions, 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
DTCs, or the system can not communicate with
diagnostic tool, refer to the Symptom Chart
P.23A-35.6. If there is a DTC, record the number of the code,
then erase the code from memory using
diagnostic tool.
7. Reconfirm the symptom with a Road Test.
8. If a DTC is set again, go to the Inspection Chart
for Diagnostic Trouble Codes.
9. If a DTC is not set again, the malfunction is
intermittent. For information on how to cope with
intermittent malfunctions, refer to GROUP 00,
How to Use Troubleshooting/Inspection Service
Points
How to Cope with Intermittent
Malfunction P.00-14.
10.After repairs are completed, conduct a Road Test
duplicating the complaint conditions to confirm the
malfunction has been eliminated.
DIAGNOSTIC FUNCTIONM1231022500135
CHECK "N" RANGE LIGHT
The "N" range light flashes once per second if there is an
abnormality in any of the items in the table below which are
related to the A/T system. Check for diagnostic trouble codes if
the "N" range light is flashing once per second.
NOTE: The "N" indicator lamp warning function does not
operate with the selector lever in the "P" (PARK), "R"
(REVERSE) or "N" (NEUTRAL) position.
"N" range light flashing items
Input shaft speed sensor
Output shaft speed sensor
Each solenoid valve
Gear incorrect ratio
A/T control relay system
If the "N" range light is flashing rapidly (twice per second),
the transmission fluid temperature is too high. (It flashes
when the fluid is approximately 125
C or more and goes
off when the fluid is approximately 115
C or less)
ON-BOARD DIAGNOSTICS
The automatic transmission -electronic control unit
(A/T-ECU) monitors its input/output signals (some
signals all the time and others under specified condi-
tions). When an irregular signal is initially monitored,
the A/T-ECU decides that a malfunction has
occurred and records the occurrence as a diagnostic
trouble code. The diagnostic results can be read with diagnostic 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 A/T-ECU
connector are disconnected. In addition, the diagnos-
tic trouble code can also be erased by diagnostic
tool.

AUTOMATIC TRANSMISSION DIAGNOSIS
AUTOMATIC TRANSMISSION23A-14
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 diagnostic tool.The diagnostic items are displayed in numeric order.
HOW TO CONNECT THE DIAGNOSTIC TOOL
(MUT-III)
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
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 light will be illuminated in a 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

AUTOMATIC TRANSMISSION DIAGNOSIS
AUTOMATIC TRANSMISSION23A-15
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. 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.
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 "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 "Data List."
8. Choose an appropriate item and select the "OK" button.

AUTOMATIC TRANSMISSION DIAGNOSIS
AUTOMATIC TRANSMISSION23A-16
HOW TO PERFORM ACTUATOR TEST
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 "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 "Actuator Test."
8. Choose an appropriate item and select the "OK" button.
HOW TO DIAGNOSE THE CAN BUS LINES
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