2005 MITSUBISHI 380 Alternator
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ENGINE AND TRANSMISSION
CONFIGURATION DIAGRAMS80-9
B-112 (1) STARTER
B-113 (1-B) STARTER
B-114 (3-GR) IGNITION COIL 6
B-115 (1) ALTERNATOR
B-116 (2) ALTERNATORB-117 (3-GR) IGNITION COIL 4
B-118 (3-GR) IGNITION COIL 2
B-119 (3-B) CRANKSHAFT POSITION SENSOR
B-120 (2-GR) KNOCK SENSOR
Page 589 of 1500
CENTRALISED JUNCTION
CIRCUIT DIAGRAMS90-12
CENTRALISED JUNCTIONM1901000301013
FUSIBLE LINK AND FUSE
ENGINE COMPARTMENT
NO. POWER SUPPLY
CIRCUITNAME RATED
CAPACITY (A)HOUSING
COLOURLOAD CIRCUIT
1 Battery/Alternator
(Fusible link No.27)Fusible
link80 Black Fuse Nos.5, 6, 9 and 10 (in junction
block) circuit
2 50 Blue Radiator fan motor
3 30 Pink ABS-ECU and ABS/TCL-ECU (motor
power supply)
4 40 Green Ignition switch circuit
5 40 Green Fuse Nos.3 and 4 (in junction block
circuit), front power window regulator
motor, power seat assembly, power
window main switch and rear power
window regulator motor
6 Fuse 15 Blue Fog lamp and fog lamp relay
720Yellow
8 15 Red Horn (High), horn (Low) and horn
relay
9 20 Yellow Camshaft position sensor, crankshaft
position sensor, engine oil control
valve, evaporative emission purge
solenoid, evaporative emission
ventilation solenoid, heated oxygen
sensor,ETACS-ECU, injector, mass
airflow sensor, MPI relay, Engine
ECU, A/T ECU, throttle actuator
control motor relay and fan control
relay
10 10 Red A/C compressor assembly and
A/C-ECU
11 15 Blue ABS-ECU, ABS/TCL-ECU,
high-mounted stoplamp, Engine ECU
and rear combination lamp
12
13 7.5 Brown
Alternator
14 10 Red ETACS-ECU, Hazard lamps
15 20 Yellow A/T control solenoid valve and Engine
ECU
16 Front-ECU
(Headlamp relay:
High)15 Blue Headlamp (RH) and headlamp (High:
RH)
17 15 Blue Headlamp (LH) and headlamp (High:
LH)
18 Front-ECU (Field
effect transistor for
headlamp: Low)10 Red Headlamp (RH) and headlamp (Low:
RH)
Page 590 of 1500
CENTRALISED JUNCTION
CIRCUIT DIAGRAMS90-13
19 Front-ECU (Field
effect transistor for
headlamp: Low)Fuse 10 Red Headlamp (LH) and headlamp (Low:
LH)
20 Front-ECU (Taillamp
relay)7.5 Brown A/C-ECU, A/T selector lever position
illumination lamp, combination meter,
fog lamp switch, headlamp (RH),
glove box lamp, hazard warning lamp
switch, multi-center display unit,
radio, CD player, rear combination
lamp (RH), rheostat and TCL switch
21 7.5 Brown Headlamp (LH), license plate lamp
and rear combination lamp (LH)
22 Battery/Alternator
(Fusible link No.27)15 Blue A/C-ECU, column switch,
combination meter, ETACS-ECU,
front-ECU, key reminder switch, multi-
center display unit, radio, CD player,
and vanity mirror lamp
23 Ignition switch (ACC) 10 Red A/C-ECU, accessory socket relay,
ETACS-ECU, multi-center display
unit, radio, CD player.
24 Battery/Alternator
(Fusible link No.27)15 Blue Fuel pump module
25 Ignition switch (ACC) 30 Green Front-ECU and windshield wiper
motor
26 Battery/Alternator
(Fusible link No.27)Fusible
link20 Light blue Anti-lock braking system(solenoid
valve)
27
Alternator120
Battery, front-ECU, fusible link Nos.1,
2, 3, 4, 5 and 26 and fuse Nos.6, 7, 8,
9, 10, 11, 13, 14, 15, 22 and 24 (in
relay box) NO. POWER SUPPLY
CIRCUITNAME RATED
CAPACITY (A)HOUSING
COLOURLOAD CIRCUIT
Page 849 of 1500
ON-VEHICLE SERVICE
HEATER, AIR CONDITIONING AND VENTILATION55-148
POWER RELAY CHECKM1552008800321
BLOWER RELAY CONTINUITY CHECK
Hissing or swishing
noiseLow refrigerant quantity Refrigerant level Check system for leaks
and charge to
specification
Rattling (Internal
compressor)Lack of lubricating oil. In a
system with a gas leak
the oil has escaped with
the refrigerantRattling noise from
internal compressorRepalce the compressor
and also fix the system
leak to prevent
reoccurrance
Wooing (Resonant
noise)Drive accessory (P/S
pump, Alternator,etc)
resonating at specific
engine speedThe drive accessories for
vibrationStop vibrations of the
assembly or modify
transmission route to the
vehicle body
Cooing (Discharge
pulsation noise)Pressure fluctuation of
refrigerant discharged
from compressor, which
vibrates the high pressure
pipingRemove the piping
mounting clamps and
re-check. Hold the
condenser without
mountings by hand and
re-checkPut rubber bush between
pipe clamps and the
vehicle body. decrease
refrigerant to minimum
specified level. NOISE DESCRIPTION POSSIBLE CAUSE CHECK REPAIR
BATTERY
VOLTAGETESTER
CONNECTIONSPECIFIED
CONDITION
Not applied 4
5 Open circuit
Connect
terminal 1 to the
positive battery
terminal
Connect
terminal 3 to the
negative battery
terminal4
5 Less than 2 ohms
Page 865 of 1500
COMPRESSOR ASSEMBLY AND DRIVE BELT
HEATER, AIR CONDITIONING AND VENTILATION55-164
COMPRESSOR ASSEMBLY AND DRIVE BELT
REMOVAL AND INSTALLATIONM1552004100289
Pre-removal Operation
Refrigerant Discharging (Refer to P.55-142).
Front Bumper Under Cover (Refer to GROUP 51, FRONT
BUMPERP.51-2).
Front Under Cover RH (Refer to GROUP 51, UNDER
COVER P.51-13).Post-installation Operation
Drive Belt Tension Adjustment (Refer to GROUP 00,
Maintenance Service
Drive Belt P.00-39).
Refrigerant Charging (Refer to P.55-142).
Front Bumper Under Cover (Refer to GROUP 51, FRONT
BUMPERP.51-2).
Front Under Cover RH (Refer to GROUP 51, UNDER
COVER P.51-13).
REMOVAL STEPS
<>>>A<<1. FLEXIBLE SUCTION HOSE
CONNECTION
<>2. FLEXIBLE DISCHARGE HOSE
CONNECTION
3. O-RING4. DRIVE BELT
<> >>B<<5. A/C COMPRESSOR
6. ALTERNATOR
7. A/C COMPRESSOR BRACKETREMOVAL STEPS (Continued)
Page 978 of 1500
16-1
GROUP 16
ENGINE
ELECTRICAL
CONTENTS
CHARGING SYSTEM . . . . . . . .
16-2
GENERAL DESCRIPTION . . . . . .
16-2
CHARGING SYSTEM DIAGNOSIS16-3
SPECIAL TOOL . . . . . . . . . . . . . . .16-6
ON-VEHICLE SERVICE. . . . . . . . .16-7
ALTERNATOR OUTPUT WIRE VOLTAGE
DROP TEST . . . . . . . . . . . . . . . . . . . . . 16-7
OUTPUT CURRENT TEST . . . . . . . . . . 16-8
REGULATED VOLTAGE TEST . . . . . . . 16-10
WAVE PATTERN CHECK USING AN
OSCILLOSCOPE . . . . . . . . . . . . . . . . . . 16-11
ALTERNATOR ASSEMBLY . . . . .16-14
REMOVAL AND INSTALLATION . . . . . 16-14
DISASSEMBLY AND ASSEMBLY. . . . . 16-15
INSPECTION . . . . . . . . . . . . . . . . . . . . . 16-17
STARTING SYSTEM . . . . . . . . .16-20
GENERAL DESCRIPTION . . . . . .
16-20
STARTING SYSTEM DIAGNOSIS . . . . 16-21
STARTER MOTOR ASSEMBLY . .16-23
REMOVAL AND INSTALLATION . . . . . 16-23
INSPECTION . . . . . . . . . . . . . . . . . . . . . 16-24
DISASSEMBLY AND ASSEMBLY. . . . . 16-26
INSPECTION . . . . . . . . . . . . . . . . . . . . . 16-28
IGNITION SYSTEM . . . . . . . . . . . . . .16-30GENERAL DESCRIPTION . . . . . . .
16-30
SPECIAL TOOLS . . . . . . . . . . . . . .16-30
ON-VEHICLE SERVICE . . . . . . . . .16-31
KNOCK CONTROL SYSTEM CHECK . . 16-31
IGNITION COIL CHECK. . . . . . . . . . . . . 16-31
SPARK PLUG TEST . . . . . . . . . . . . . . . 16-32
SPARK PLUG CHECK AND CLEANING16-32
CAMSHAFT POSITION SENSOR CHECK16-32
CRANKSHAFT POSITION SENSOR
CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . 16-32
IGNITION COIL . . . . . . . . . . . . . . . .16-33
REMOVAL AND INSTALLATION . . . . . 16-33
CAMSHAFT POSITION SENSOR .16-34
REMOVAL AND INSTALLATION . . . . . 16-34
CRANKSHAFT POSITION SENSOR16-35
REMOVAL AND INSTALLATION . . . . . 16-35
KNOCK SENSOR . . . . . . . . . . . . . .16-36
REMOVAL AND INSTALLATION . . . . . 16-36
SPECIFICATIONS . . . . . . . . . . 16-38
FASTENER TIGHTENING
SPECIFICATIONS . . . . . . . . . . . . .
16-38
GENERAL SPECIFICATIONS . . . .16-38
SERVICE SPECIFICATIONS . . . . .16-39
Page 979 of 1500
16-2
CHARGING SYSTEM
GENERAL DESCRIPTIONM1161000100629
The charging system charges the battery with the
alternator output to keep the battery charged at a
constant level during varying electrical load.
OPERATION
Rotation of the excited field coil generates AC volt-
age in the stator.
This alternating current is rectified through diodes to
DC voltage having a waveform shown in the illustra-
tion above.
The average output voltage fluctuates slightly with
the alternator load condition.When the ignition switch is turned on, current flows in
the field coil and initial excitation of the field coil
occurs.
When the stator coil begins to generate power after
the engine is started, the field coil is excited by the
output current of the stator coil.
The alternator output voltage rises as the field cur-
rent increases and it falls as the field current
decreases. When the battery positive voltage
(alternator S terminal voltage) reaches a regulated
voltage of approximately 14.4 V, the field current is
cut off. When the battery positive voltage drops
below the regulated voltage, the voltage regulator
regulates the output voltage to a constant level by
controlling the field current.
In addition, when the field current is constant, the
alternator output voltage rises as the engine speed
increases.
Page 980 of 1500
CHARGING SYSTEM
ENGINE ELECTRICAL16-3
CHARGING SYSTEM DIAGNOSISM1161000700427
TROUBLESHOOTING HINTS
Alternator malfunction light dose not go on when the ignition
switch is turned to ON, before the engine starts.
Check the bulb.
Alternator malfunction light dose not switch off after the engine
starts.
Check the IC voltage regulator inside the
alternatoralternator.
Discharged or overcharged battery.
Check the IC voltage regulator inside the alternator.
The alternator malfunction light illuminates dimly.
Check the diode (inside the combination meter) for a
short-circuit.
TROUBLESHOOTING GUIDE
The charging system troubleshooting guide is shown in the fol-
lowing steps.
STEP 1.
Q: Is the battery in good condition? (Refer to GROUP 54A,
Chassis Electrical
Battery On-vehicle Service
Battery Check P.54A-5.)
YES : Go to Step 2.
NO : Charge or replace the battery.
STEP 2.
Q: Is the alternator drive belt in good condition? (Refer to
GROUP 00, General
Maintenance Service Drive Belts
(For Alternator, Power Steering Pump and Air
Conditioning) (Check) P.00-39.)
YES : Go to Step 3.
NO : Adjust the belt tension or replace the belt.
STEP 3.
Q: Does the alternator malfunction light come on when the
ignition switch is turned on?
YES : Go to Step 4.
NO :
Check the ignition switch. (Refer to GROUP 54A,
Chassis Electrical
Ignition Switch Ignition
Switch
Inspection P.54A-44.)
Check for burnt-out alternator malfunction light.
Check the alternator. (Refer to Charging System
Alternator Assembly
Inspection P.16-17.)
Check the alternator malfunction light-related
circuits.