auto transmission MITSUBISHI 380 2005 User Guide

RECOMMENDED LUBRICANTS AND LUBRICANT CAPACITIES TABLE
GENERAL00-35
RECOMMENDED LUBRICANTS AND LUBRICANT
CAPACITIES TABLE
M1001001300504
RECOMMENDED LUBRICANTS
LUBRICANT CAPACITY TABLE
<3.8L ENGINE>LUBRICANT SPECIFICATION
Engine oil Engine oils conforming to ACEA A1, A2 or A3 and
AP1 SG or higher
AutomaticTransmission fluid Genuine Mitsubishi Motors ATF-SP III
Manual Transmission fluid Genuine Mitsubishi Motors MTF
Power steering fluid ATF DEXRON III or DEXRON II
Brakes fluid Conforming to DOT 3 or DOT 4
Engine coolant Genuine Mitsubishi Motors coolant
Refrigerant (air conditioning) HFC-134a
DESCRIPTION SPECIFICATION
Engine oil (Litres) Oil pan (excluding oil filter) 4.0
Oil filter 0.3
Engine coolant (Litres) 8.7
Automatic Transmission fluid (Litres) 8.4
Manual Transmission fluid (Litres) 2.8
Power steering fluid (Litres) 1.2
Fuel tank (Litres) 67.0
Washer fluid (Litres) 5.0
Refrigerant (air conditioning) (grams) 435g - 475g

MAINTENANCE SERVICE
GENERAL00-47
6. Securely insert the dipstick.
NOTE: The transmission fluid should always be replaced
under the following conditions:
.
When troubleshooting the transaxle.
When overhauling the transaxle.
When the transmission fluid is noticeably dirty or burnt
(driving under severe conditions).
TRANSMISSION FLUID CHANGE
Refer to GROUP 23A, Automatic Transmission - On-vehicle
Service P.23A-296.
12. ENGINE COOLANT (CHANGE)M1001003100357
Check the cooling system parts such as the radiator, heater
and oil cooler hoses, thermostat and their connections for leak-
age and damage.
.
CHANGING COOLANT
1. Set the temperature control knob to the "HOT" position.
2. Run the engine until the engine coolant warms, and then
stop the engine.
When removing the radiator cap, use care to avoid
contact with hot coolant or steam. Place a shop towel
over the cap and turn the cap counterclockwise a lit-
tle to let the pressure escape through the vinyl tube.
After relieving the steam pressure, remove the cap by
slowly turning it counterclockwise.
3. Drain the water from the radiator, heater core and engine
after unplugging the radiator drain plug and removing the
radiator cap.

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-54
SYMPTOM PROCEDURES
INSPECTION PROCEDURE 1: When the Brake Pedal is Depressed, Auto-cruise Control System is not
Cancelled.
.
COMMENT
The stoplamp switch circuit is suspected.
.
TROUBLESHOOTING HINTS (THE MOST
LIKELY CAUSES FOR THIS CASE:)
Malfunction of the stoplamp switch.
Damaged harness or connector.
Malfunction of the Engine ECU.
Circuit drawings
Refer to circuit diagrams GROUP-90
Refer to configuration diagrams GROUP-80
Refer to component locations GROUP-70
DIAGNOSIS
Refer to P.17-35, Diagnostic Trouble Code Procedures DTC
22: Stoplamp Switch System.
INSPECTION PROCEDURE 2: When the Selector Lever is Moved to "N" Range, Auto-cruise Control
System is not Cancelled.
.
COMMENT
The transmission inhibitor switch circuit is suspected.
.
TROUBLESHOOTING HINTS (THE MOST
LIKELY CAUSES FOR THIS CASE:)
Malfunction of the transmission inhibitor switch.
Damaged harness or connector.
Malfunction of the Engine ECU.
Malfunction of A/T ECU.
Circuit drawings
Refer to circuit diagrams GROUP-90
Refer to configuration diagrams GROUP-80
Refer to component locations GROUP-70
DIAGNOSIS
Refer to GROUP 23A, A/T Diagnosis Diagnostic Trouble
Code Procedures
DTC 0705: Transmission Inhibitor Switch
System (Open/short Circuit) P.23A-97.

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-56
INSPECTION PROCEDURE 5: Auto-cruise Control System cannot be Set.
.
COMMENT
The fail-safe function is probably canceling
auto-cruise control system. In this case, Diagnostic
Tool MB991958 can be used to retest each system
by checking the diagnostic trouble codes. The
Diagnostic Tool can also be used to check if the cir-
cuits of each input switch are normal or not by check-
ing the input switch codes.
.
TROUBLESHOOTING HINTS (THE MOST
LIKELY CAUSES FOR THIS CASE:)
Malfunction of the auto-cruise control switch.
Malfunction of the stoplamp switch.
Malfunction of the transmission inhibitor switch.
Malfunction of the Engine ECU.
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. Using Diagnostic Tool MB991958, read the
diagnostic trouble code.
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. (Refer to P.17-11).
(2) Turn the ignition switch to the "ON" position.
(3) Check for auto-cruise control system diagnostic trouble
code. (Refer to P.17-11).
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect Diagnostic Tool MB991958.
Q: Is DTC set?
YES : Diagnose the auto-cruise control system. (Refer to
P.17-14, Diagnostic Trouble Code Chart). Then go to
St e p 6 .
NO : Go to Step 2.

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-59
STEP 4. Using Diagnostic Tool MB991958, check A/T data
list item 34: Transmission Inhibitor Switch.
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. (Refer to P.17-11).
(2) Turn the ignition switch to the "ON" position.
(3) Set Diagnostic Tool MB991958 to data reading mode for
Auto Transmission system. (Refer to P.17-11).
Item 34, Transmission Inhibitor Switch.
When selector lever is at the "P" or "N" position, the
display on Diagnostic Tool MB991958 should be
"ON".
When selector lever is at the "R" or "D" position, the
display on Diagnostic Tool MB991958 should be
"OFF".
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect Diagnostic Tool MB991958.
Q: Is the switch operating properly?
YES : Go to Step 5.
NO : Refer to P.17-54, Symptom Procedures
Inspection
Procedure 2. Then go to Step 6.
STEP 5. Check the symptoms.
Q: Can auto-cruise control be set?
YES : It can be assumed that this malfunction is intermittent.
(Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
How to
Cope with Intermittent Malfunction P.00-14).
NO : Replace the Engine ECU.[Refer to GROUP 13A,
Engine ECU 13A-675] . Then go to Step 6.
STEP 6. Check the symptoms.
Q: Can auto-cruise control be set?
YES : The procedure is complete.
NO : Return to Step 1.

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 CONTROL17-74
THROTTLE POSITION SENSOR
Refer to GROUP 13A, On-vehicle Service Throttle Actuator
Control Motor Check 13A-671 (3.8L engine).
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 movement at any time. Do
not under any circumstance activate the throttle plate
by hand.
When removing the throttle body from the intake
manifold disconnect the wiring first.During replace-
ment connect the wiring last.
Do not activate the throttle body using a DC supply to
test the motor, as permanent damage to the throttle
body will result.
TRANSMISSION INHIBITOR SWITCH ("N"
POSITION)
Refer to GROUP 23A, On-vehicle Service Essential Service
P.23A-294.

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-75
AUTO-CRUISE CONTROL
REMOVAL AND INSTALLATIONM1172001400467
Before removal of the air bag module, refer to GROUP 52B, SRS Service Precautions
P.52B-16 and GROUP 52B, Air Bag Module and Clock Spring P.52B-237.
CONTROL SWITCH REMOVAL
STEPS
1. AIR BAG MODULE SIDE> (REFER TO GROUP 52B, AIR
BAG MODULES AND CLOCK
SPRING P.52B-237)
2. STEERING WHEEL ASSEMBLY
(REFER TO GROUP 37, STEERING
WHEEL P.37-23)
3. LOWER COVER CAP
4. AUTO-CRUISE CONTROL SWITCH
CONTROL UNIT REMOVAL
5. Engine ECU [REFER TO GROUP
13A, Engine ECU 13A-675] SENSOR REMOVAL STEPS
6. TRANSMISSION INHIBITOR
SWITCH (REFER TO GROUP 23B,
AUTOMATIC TRANSMISSION)
7. THROTTLE BODY (BUILT-IN
THROTTLE POSITION SENSOR
AND THROTTLE ACTUATOR
CONTROL MOTOR) (REFER TO
GROUP 13A, THROTTLE BODY
13A-660)
8. ACCELERATOR PEDAL (BUILT-IN
ACCELERATOR PEDAL POSITION
SENSOR) (REFER TO GROUP 17,
ACCELERATOR PEDAL P.17-9)
9. STOPLIGHT SWITCH (REFER TO
GROUP 35A, BRAKE PEDAL
P.35A-24)

23A-1
GROUP 23A
AUTOMATIC
TRANSMISSION
CONTENTS
GENERAL DESCRIPTION. . . . . . . . .23A-3
AUTOMATIC TRANSMISSION
DIAGNOSIS . . . . . . . . . . . . . . . . . . . .23A-12
DIAGNOSTIC TROUBLESHOOTING FLOW23A-12
INTRODUCTION TO A/T DIAGNOSIS . . . . 23A-12
A/T DIAGNOSTIC TROUBLESHOOTING
STRATEGY . . . . . . . . . . . . . . . . . . . . . . . . . 23A-13
DIAGNOSTIC FUNCTION . . . . . . . . . . . . . 23A-13
HOW TO INITIALIZE A/T LEARNING
VALUE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23A-17
FAIL-SAFE/BACKUP FUNCTION. . . . . . . . 23A-18
ROAD TEST . . . . . . . . . . . . . . . . . . . . . . . . 23A-19
TORQUE CONVERTER STALL TEST . . . . 23A-25
HYDRAULIC PRESSURE TESTS . . . . . . . 23A-26
HYDRAULIC CIRCUIT . . . . . . . . . . . . . . . . 23A-32LINE PRESSURE ADJUSTMENT . . . . . . . . 23A-33
DIAGNOSTIC TROUBLE CODE CHART . . 23A-34
SYMPTOM CHART . . . . . . . . . . . . . . . . . . . 23A-35
DIAGNOSTIC TROUBLE CODE
PROCEDURES . . . . . . . . . . . . . . . . . . . . . . 23A-36
SYMPTOM PROCEDURES . . . . . . . . . . . . 23A-218
DATA LIST REFERENCE TABLE . . . . . . . . 23A-271
ACTUATOR TEST REFERENCE TABLE . . 23A-276
A/T-ECU TERMINAL VOLTAGE REFERENCE
CHART FOR TRANSMISSION OPERATION23A-278
A/T-ECU TERMINAL RESISTANCE AND
CONTINUITY INSPECTION CHART . . . . . 23A-284
INSPECTION PROCEDURE USING AN
OSCILLOSCOPE . . . . . . . . . . . . . . . . . . . . 23A-285
Continued on next page
WARNINGS REGARDING SERVICING OF SUPPLEMENTAL RESTRAINT SYSTEM (SRS) EQUIPPED VEHICLES