2000 MITSUBISHI MONTERO charging

GDI -Troubleshooting 13A-94
Inspection procedure 19
Low alternator output voltage (approx.12.3 V)
Probable cause
The cause is probably a malfunction of the alternator or one of the problems
listed at right.DMalfunction of the charging system
DOpen circuit between the alternator G terminal and
the engine-ECU
DMalfunction of the engine-ECU
NG
Repair
OK
Replace the engine-ECU.
OK
Check the alternator. (Refer to GROUP
16 - Charging System.)
OK
Check the following connectors:
B-41, B-59, D-119
Measure at the alternator connector
B-59.
DConnect the connector. (Use the
test harness MB991519)
DVoltage between 1 (black clip)
and earth
(Engine: Idling)
(Radiator fan: Not operating)
(Headlamp: OFF®ON)
(Stoplamp: OFF®ON)
(Rear defogger switch: OFF®
ON)
OK:
Voltage increased by
0.2 - 3.5 V.NGMeasure at the alternator connector
B-59.
DDisconnect the connector, and
measure at the harness side.
DDisconnect the engine-ECU
connector.
DContinuity between 1 and earth
OK:
No continuityNGCheck the harness wire between the
alternator and the engine-ECU, and
repair if necessary.
Inspection procedure 20
Idling speed is improper when A/C is operating
Probable cause
If the engine-ECU detects that the air conditioner is on, it activates the throttle control
servo to control idle-up operation.
The A/C-ECU judges if theloadcaused by air conditioner operation ishigh or low,
and converts it to voltage signal (high or low voltage) and inputs the signal to the
engine-ECU.
Based on this voltage signal, the engine-ECU controls the idle-up speed (forhigh
or low load).DMalfunction of the A/C control system
DImproper connector contact,opencircuit or
short-circuited harness wire
DMalfunction of the engine-ECU
NG
Repair
Measure at the engine-ECU connector D-117.
DConnect the connector.
DVoltage between 65 and earth (Engine: at idle, outside air
temperature: 25_C or more)
OK:
0 - 3 V [When A/C is MAX. COOL condition (when the
load by A/C is high)]
System voltage [When A/C is MAX. HOT condition (when
the load by A/C islow)]OKCheck the following connector:
D-117
OK
Check trouble symptom.
NG
Replace the engine-ECU.
NG
Check the A/C system. (Refer to GROUP 55 - On-vehicle Service.)


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GDI -Troubleshooting 13A-186
Check the trouble symptoms.NG
From the previouspage
Check the trouble symptoms.
Replace the catalytic converter.
OK
Check the following items in that order.
DCheck the sparkplug
DCheck the compression pressure
DCheck the positive crankcase ventilation system.
NG
Replace the injector.
Inspection procedure 19
Low alternator output voltage (approx.12.3 V)
Probable cause
The cause is probably a malfunction of the alternator or one of the problems
listed at right.DMalfunction of the charging system
DOpen circuit between the alternator G terminal and
the engine-A/T-ECU
DMalfunction of the engine-A/T-ECU
Measure at alternator connector B-59
DConnect the connector.
(Use test harness: MB991519)
DThe voltage between terminal 1
(black clip) and earth
(Engine: Idling)
(Headlamp: OFF to ON)
(Stoplamp: OFF to ON)
(Rear defogger switch: OFF to
ON)
OK:
The voltage increases by
0.2 - 3.5 VNGMeasure at alternator connector B-59
DDisconnect the connector, and
measure at the harness side.
DDisconnect the engine-A/T-ECU
connector
DThe continuity between terminal 1
and earth
OK:
No continuityNGCheck the harness wire between the
alternator and the engine-A/T-ECU,
and repair if necessary.
OK
Check the alternator
(Refer to GROUP16 - Charging
System.)NG
OK
Check the following connectors:
B-41, D-119Repair
OK
Replace the engine-A/T-ECU.
OK
Check the trouble symptoms.
NG
NG
Check the harness wire between the
alternator and the engine-A/T-ECU.Repair


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15-1
INTAKE AND
EXHAUST
CONTENTS
SERVICE SPECIFICATIONS 2.................
SEALANT 2..................................
SPECIAL TOOL 2............................
ON-VEHICLE SERVICE 2.....................
Intake Manifold Vacuum Check <6G7> 2.........
Turbocharger Supercharging Check <4D5> 2.....
Waste Gate Actuator Check <4D5> 3..........
Waste Gate Actuator Check <4M4> 3..........
AIR CLEANER 4.............................
INTERCOOLER<4D5, 4M4> 5.................
INTAKE MANIFOLD <6G7> 6.................
INTAKE MANIFOLD AND THROTTLE BODY
<4M4> 8.....................................EXHAUST MANIFOLD <6G7> 11..............
INTAKE MANIFOLD AND EXHAUST
MANIFOLD, TURBOCHARGER <4D5> 12...
TURBOCHARGER AND EXHAUST
MANIFOLD <4M4> 14.....................
TURBOCHARGER <4D5> 16.................
TURBOCHARGER <4M4> 19.................
EXHAUST PIPE AND MAIN MUFFLER
<6G7> 21...................................
EXHAUST PIPE AND MAIN MUFFLER
<4D5> 23...................................
EXHAUST PIPE AND MAIN MUFFLER
<4M4> 25...................................


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15-1
INTAKE AND
EXHAUST
CONTENTS
GENERAL 2.................................
Outline of Changes 2...........................
GENERAL INFORMATION 2..................
SERVICE SPECIFICATIONS 3.................
SEALANT 3..................................
ON-VEHICLE SERVICE 4.....................
Turbocharger Supercharging Check 4............
Supercharging Pressure Control
System Check 5...............................
Variable Geometry Actuator Check 6.............Variable Geometry Solenoid Valve Check 6.......
INTAKE MANIFOLD AND THROTTLE BODY
<4M4> 7.....................................
INTAKE MANIFOLD AND EXHAUST
MANIFOLD, THROTTLE BODY AND
TURBOCHARGER <4D5> 10..................
TURBOCHARGER AND EXHAUST
MANIFOLD <4M4> 12........................
EXHAUST PIPE AND MAIN MUFFLER
<4D5> 14....................................


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16-1
ENGINE
ELECTRICAL
CONTENTS
CHARGING SYSTEM 2................
GENERAL INFORMATION 2................
SERVICE SPECIFICATIONS 3..............
SPECIAL TOOL 4.........................
ON-VEHICLE SERVICE 5..................
Alternator Output Line Voltage Drop Test 5....
Output Current Test 6.......................
Regulated Voltage Test 8....................
Waveform Check Using An Analyzer 11.......
ALTERNATOR 13.........................
STARTING SYSTEM 23................
GENERAL INFORMATION 23..............
SERVICE SPECIFICATIONS 24............
STARTER MOTOR 24.....................
IGNITION SYSTEM 37.................
GENERAL INFORMATION 37..............
SERVICE SPECIFICATIONS 38............
SPECIAL TOOL 38.......................
ON-VEHICLE SERVICE 38................
Ignition Coil (With Built-in Power Transistor)
Check 38...................................
Spark Plug Check and Cleaning 39...........
Ignition Failure Sensor Check 40.............
Camshaft Position Sensor Check, Crank angle
Sensor Check, Detonation Sensor Check 40...
IGNITION COIL <6G7> 41.................
CRANKSHAFT ANGLE SENSOR
<6G7> 42................................
CAMSHAFT POSITION SENSOR
<6G7> 42................................
DETONATION SENSOR <6G7> 43.........
GLOW SYSTEM 44....................
GENERAL INFORMATION 44..............
SERVICE SPECIFICATIONS 45............
ON-VEHICLE SERVICE 45................
Self-regulating Glow System Check 45........
Glow & EGR Control Unit Check 48..........
Engine ECU Check 49.......................
Glow Plug Relay Check 50..................
Glow Plug Check 51........................
Engine Coolant Temperature Sensor
Check 51...................................
GLOW PLUG 52..........................


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ENGINE ELECTRICAL -Charging System16-10
14. If the voltage reading conforms to the value
in the voltage regulation, then the voltage
regulator is operating normally.
If the voltage is not within the standard value,
there is a malfunction of the voltage regulator
or of the alternator.
15. After the test, lower the engine speed to the
idle speed.
16. Turn the ignition switch off.17. Remove the tachometer or the MUT-II.
18. Disconnect the negative battery cable.
19. Disconnect the ammeter and voltmeter.
20. Connect the alternator output wire to the
alternator “B” terminal.
21. Remove the special tool, and return the
connector to the original condition.
22. Connect the negative battery cable.
Voltage Regulation Table
Standard value:
Inspection terminalVoltage regulator ambient temperature_
CVoltage V
Terminal “S”-2014.2 - 15.4
2013.9 - 14.9
6013.4 - 14.6
8013.1 - 14.5


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54A-2
CHASSIS
ELECTRICAL
CONTENTS
BATTERY 4
..............................
SERVICE SPECIFICATIONS 4..................
ON-VEHICLE SERVICE 4......................
Electrolyte Level and Specific Gravity Check 4..
Charging 5.................................
Battery Test 5...............................
IGNITION SWITCH AND IMMOBILIZER
6.....................
SPECIAL TOOLS 6............................
TROUBLESHOOTING 6........................
IGNITION SWITCH AND
IMMOBILIZER-ECU 11.........................
IGNITION SWITCH AND IMMOBILIZER
<4D56> 14...............................
SPECIAL TOOLS 14...........................
TROUBLESHOOTING 14.......................
IGNITION SWITCH AND IMMOBILIZER-ECU
19 ............................................
COMBINATION METER 23................
SERVICE SPECIFICATIONS 23.................
SEALANTS 24................................
SPECIAL TOOLS 24...........................
TROUBLESHOOTING 24.......................
ON-VEHICLE SERVICE 30.....................
Speedometer Check 30......................
Tachometer Check 30........................
Fuel Gauge Unit Check 31....................Engine Coolant Temperature Gauge Unit Check
32 .........................................
COMBINATION METER 33.....................
HEADLAMP ASSEMBLY 36...............
SERVICE SPECIFICATIONS 36.................
SPECIAL TOOLS 36...........................
TROUBLESHOOTING 36.......................
ON-VEHICLE SERVICE 36.....................
Headlamp Aiming Adjustment 36..............
Luminance Measurement 38..................
Headlamp Bulb Replacement 39...............
HEADLAMP ASSEMBLY 40....................
FOG LAMPS 41..........................
SERVICE SPECIFICATIONS 41.................
SPECIAL TOOLS 41...........................
TROUBLESHOOTING 41.......................
ON-VEHICLE SERVICE 41.....................
Fog Lamp Aiming Check 41...................
FOG LAMPS 44...............................
SIDE TURN-SIGNAL LAMPS 45...........
SPECIAL TOOLS 45...........................
SIDE TURN-SIGNAL LAMPS 46................
ROOM LAMP 46.........................
TROUBLESHOOTING 46.......................
CONTINUED ON NEXT PAGE


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CHASSIS ELECTRICAL-Battery54A-5
CHARGING
1. Remove the battery from the vehicle.
2. The normal charging current is a value in amperes which is 1/10th of the battery capacity. If the
battery needs to be charged rapidly because of reasons such as time limitations, the maximum charging
current for rapid charging is the battery capacity expressed as an ampere value.
Battery typeCapacity (5-hour rate)Normal charging currentRapid charging current
75D2354 A5.4 A54 A
80D2658 A5.8 A58 A
95D3170 A7.0 A70 A
3. Determine when charging is finished.
DWhen the specific gravity of the battery electrolyte is constantly within 1.250 - 1.290 for a continuous
period of one hour or more
DWhen the voltage per cell during charging is 2.5 - 2.8 V constantly for a continuous period of one hour
or more
Caution
1. The battery plugs should be removed during charging.
2. The battery electrolyte level may rise and overflow from the battery during charging.
3. Explosions may occur if the battery is brought close to naked flames during charging.
4. Be careful to avoid tasks that might produce sparks or other danger while the battery is charging.
5. After charging is complete, replace the battery plugs, pour water over the battery to rinse
away any sulphuric acid, and let the battery stand to dry.
6. Charge the battery in a well-ventilated location.
7. Do not let the battery electrolyte temperature rise above approximately 45
°C (approximately
55
°C during rapid charging).
BATTERY TEST
Test procedure
OK
NG
Replace
Re-test
OK
Normal
(1) Connect a battery tester to the battery.
(2) Apply aloadwith the specified current to the battery.(Refer
to Table 1.)
(3) After measuring the battery voltage after 15 seconds,
remove the loadcurrent.
(4) Compare the measurement value with the specified
minimum voltage.(Refer to Table 2.)
OK:Higher than the minimum voltage
Measure the battery discharge voltage.
OK:12.4 V or more (specific gravity 1.240)NGCharge the battery at 5 A (constant current charging). (Refer
to Table 1.)
(1) Turn on the headlamps for 15 seconds.
(2) Turn off the headlamps and let the battery stand for 2
minutes to allow the battery voltage to stabilise.
(3) Disconnect the battery cables.


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