2000 MITSUBISHI MONTERO MOTOR

17-2
EVAPORATIVE EMISSION CONTROL
SYSTEM 36..............................
General Information 36......................
System Diagram 36.........................
Component Location 36......................
Purge Control System Check 37..............
Purge Port Vacuum Check 37................
Purge Control Solenoid Valve Check 38.......
EXHAUST GAS RECIRCULATION (EGR)
SYSTEM 39..............................
General Information 39......................
Operation 39................................
System Diagram 39.........................
Component Location 39......................
Exhaust Gas Recirculation (EGR) Control
System Check 40...........................
EGR Valve (Stepper Motor) Check 40........
EGR VALVE 42...........................
CANISTER 43............................
CATALYTIC CONVERTER 44..............
General Information 44......................
EMISSION CONTROL SYSTEM
<4D5> 45.............................
GENERAL INFORMATION 45..............
SERVICE SPECIFICATIONS 45............
SEALANT 45.............................
SPECIAL TOOL 45.......................
EXHAUST GAS RECIRCULATION (EGR)
SYSTEM 46..............................
General Information 46......................
System Diagram 46.........................
Component Location 46......................
Function Check 47..........................
EGR Solenoid Valve Operation Check 47.....
EGR Solenoid Valve Resistance Check 48....
Lever Position Sensor (LPS) Adjustment 48...
Engine Speed Sensor Check 49..............
Engine Coolant Temperature Sensor
Check 49...................................
CHECK AT THE GLOW & EGR CONTROL
UNIT 51..................................
EMISSION CONTROL SYSTEM
<4M4-VEHICLES WITH EGR> 52........
GENERAL INFORMATION 52..............
SERVICE SPECIFICATIONS 52............
EXHAUST GAS RECIRCULATION (EGR)
SYSTEM 53..............................
General Information 53......................
System Diagram 53.........................
Component Location 53......................
Function Check 54..........................
EGR Solenoid Valve Operation Check 54.....
EGR Solenoid Valve Resistance Check 55....
Accelerator Pedal Position Sensor (APS),
Engine Coolant Temperature Sensor, Intake
Air Temperature Sensor, Fuel Temperature
Sensor Check 55............................
Check at Engine-ECU 55....................
CATALYTIC CONVERTER 55..............
General Information 55......................


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ENGINE AND EMISSION CONTROL -Emission Control System <6G7>17-31
EMISSION CONTROL SYSTEM <6G7>
GENERAL INFORMATION
The emission control system consists of the following subsystems:
DCrankcase emission control system
DEvaporative emission control system
DExhaust emission control system
ItemsNameSpecification
Crankcase emission
control systemPositive crankcase ventilation (PCV) valveVariable flow type
(Purpose: HC reduction)
Evaporative emission
control systemCanister
Purge control solenoid valveEquipped
Duty cycle type solenoid valve
(Purpose: HC reduction)
Exhaust emission
control systemAir-fuel ratio control device - GDI systemOxygen sensor feedback type
(Purpose: CO, HC, NOx reduction)
Exhaust gas recirculation system
DEGR valveEquipped
Stepper motor type
(Purpose: NOx reduction)
Catalytic converterMonolith type
(Purpose: CO, HC, NOx reduction)
EMISSION CONTROL DEVICE REFERENCE TABLE
Related partsCrankcase
emission
control
systemEvaporative
emission
control
systemAir/fuel
ratio
control
systemCatalytic
converterExhaust
gas
recirculation
systemReference
page
PCV valve´17-35
Purge control solenoid valve´17-38
GDI system component´´GROUP
13A
Catalytic converter´17-44
EGR valve´17-40


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AUTOMATIC TRANSMISSION -Troubleshooting II>23-87
DATA LIST REFERENCE TABLE
Item
No.Check itemInspection conditionsNormal condition
1Accelerator pedalEngine: StoppedAccelerator pedal: Fully closed985 - 1,085 mV
position sensor
(APS)Selector lever position:
PAccelerator pedal: DepressedGradually increases from
the above value.
Accelerator pedal: Fully open4000 mV or higher
2Front propeller shaft
speed sensorTransfer position: 4WDDriving at a constant speed of
30 km/h30 km/h
3Rear propeller shaftTransfer position: 4WDDriving at a constant speed of30 km/h3Rear propeller shaft
speed sensorTransfer position: 4WDDriving at a constant speed of
30 km/h30 km/h
4Difference between
front and rear pro-
peller shaft speedsTransfer position: 4WDDriving at a constant speed of
30 km/hWithin 5 km/h
5Vehicle speedIdling in 1st (Vehicle stopped)0 km/h
Driving at a constant speed of 50 km/h in 3rd50 km/h
6Transfer lever posi-Ignition switch: ONTransfer shift lever position: 2H2H
tionEngine: StoppedTransfer shift lever position: 4H4H
Transfer shift lever position:
4HLc4HLc
Transfer shift lever position:
4LLc4LLc
7Transfer positionDriving at a constant
speed of 10 km/hTransfer shift lever position:
2H®4H2H - 4H®4H
Transfer shift lever position:
4H®4HLc4H - 4HL®4HL
Engine: Stopped
Selector lever position:Transfer shift lever position:
4HLc®4LLc4HL - 4LL®4LL
NTransfer shift lever position:
4LLc®4HLc4HL - 4LL®4HL
Driving at a constant
speed of 10 km/hTransfer shift lever position:
4HLc®4H4H - 4HL®4H
Transfer shift lever position:
4H®2H2H - 4H®2H
8Main relay voltageIgnition switch: ONSystem voltage (V)
9Ignition voltageIgnition switch: ONSystem voltage (V)
10Shift actuator cur-
rentDuring transfer selection (while motor is running)0A®0.2 A®0A
11Target currentDuring transfer selection (while motor is running)0A®1.5 A®0A
12Shift actuator volt-
ageIgnition switch: ON
Selector lever position: N
Transfer shift lever position: 2H®4H (or 4H®4HLc,
4HLc®4LLc)System voltage (V)
Ignition switch: ON
Selector lever position: N
Transfer shift lever position: 4LLc®4HLc (or 4HLc®4H,
4H®2H)System voltage (V)


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35A-2
BASIC BRAKE
SYSTEM
CONTENTS
GENERAL INFORMATION 3..................
SERVICE SPECIFICATIONS 5.................
LUBRICANTS 6..............................
SPECIAL TOOLS 6..........................
TROUBLESHOOTING
7......................
ON-VEHICLE SERVICE 19...................
Brake Pedal Check and Adjustment 19..........
Hydraulic Brake Booster (HBB) Operation Check
20........................
HBB Check 23............
HBB Motor Relay Continuity Check
24........................
Brake Booster Operating Test
24.....................
Check Valve Operation Check
25.....................
Load Sensing Spring Length Check and
Adjustment 25.........
Load Sensing Proportioning Valve Function
Test 26................
Bleeding 27...............Bleeding 29.............
Brake Fluid Level Sensor Check 30.............
Brake Booster Vacuum Switch Check
30..................
Disc Brake Pad Check and Replacement 31.....
Disc Brake Rotor Check 32.....................
Brake Disc Thickness Check 32.................
Brake Disc Run-out Check and Correction 33....
BRAKE PEDAL 34..........................
HYDRAULIC BRAKE BOOSTER (HBB)
36....................
HBB BUZZER 40......
MASTER CYLINDER AND BRAKE
BOOSTER 41......
Master Cylinder 43.............................
FRONT DISC BRAKE 44....................
REAR DISC BRAKE 49......................
LOAD SENSING PROPORTIONING
VALVE 54..........


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BASIC BRAKE SYSTEM -Service Specifications35A-5
SERVICE SPECIFICATIONS
ItemsStandard valueLimit
Brake pedal heightL.H. drive vehicles192 - 195-
mm
R.H. drive vehicles187 - 190-
Brake pedal play mm3-8-
Brake pedal to floorboard clearance when the brake pedal is depressed mm90 or more-
Hydraulic brake
booster (HBB)Pump motor
operation timeWhen power supply system brake fluid
pressure is not applied20 - 80-
second
When power supply system brake fluid
pressure is applied2-11-
Hydraulic pressurePedal depressionFront0.6 or more-
during no vacuum
operation testforce: 100 N
Rear0-
MPa
Pedal depressionFront4.5 or more-
force: 500 N
Rear0-
Hydraulic pressurePedal depressionFront3.0 - 4.0-
during vacuum op-
eration test
MPa
force: 100 N
Rear3.3 - 4.3-
Pedal depressionFront8.0 - 10.0-
force: 200 N
Rear8.0 - 10.0-
Pedal depressionFront14.0 - 18.0-
force: 400 N
Rear14.0 - 18.0-
Pedal depressionFront15.0 - 19.0-
force: 500 N
Rear15.0 - 19.0-
Clearance between brake booster push rod and primary piston6G70.5 - 0.9-
mm
4D5, 4M40.8 - 1.2-
Load sensing propor-When load sensing spring length is 133Short wheelbase4.9 - 5.9 (9.8)-
tioning valve output
fluid pressure (Inputmm (when unladen)
Long wheelbase5.9 - 6.9 (9.8)-
fluid pressure) MPa
ABS>mm (when laden)
9.0 - 11.0
(16.7)-
Long wheelbase9.3 - 10.3 (9.8)-
11.4 - 13.4
(16.7)-
Load sensing spring length mm
135 - 139-


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BASIC BRAKE SYSTEM -Troubleshooting35A-9
INSPECTION CHART FOR DIAGNOSIS CODES
Diagnosis
code No.Diagnosis itemsReference page
16*ABS-ECU power supply (Abnormal voltage decrease or increase)35A-9
17, 18ABS-ECU power supply (Open circuit or short circuit)
53Motor relay system (open circuit, short circuit or motor relay coil failure)35A-10
55Pump motor system (Pump motor seized or abnormal ABS-ECU current
detection circuit)35A-11
63ABS-ECU systemReplace ABS-ECU
(Refer to 35B.)
78Accumulator system (Motor has been energized abnormally for long time
or abnormal low-pressure accumulator)35A-12
79Pressure switch system (open circuit or short circuit)35A-13
NOTE
*: Code No. 16 is erased by turning the ignition switch OFF.
INSPECTION PROCEDURE FOR DIAGNOSIS CODES
Code No.16 ABB-ECU power supply system (abnormal
voltage increase or decrease)Probable cause
Code No.17, 18 ABS-ECU power supply system (open or
short circuit)
Code No.16 is output if the ABS-ECU power supply voltage is increased or decreased
than the specified.
Code No.17, 18 is output if the ABS-ECU power supply circuit isopen orshort, or
the ABS-ECU internal circuit is defective.
In addition, code No. 16 is erased by turning the ignition switch OFF.DMalfunction of the battery
DMalfunction of connector or harness
DMalfunction of the ABS-ECU
Caution
If the battery voltage is decreased or increased during the test, code No. 16 is output as a present
malfunction, disabling a correct diagnosis. Check the battery and fully charge it if necessary before
carrying out the following tests.
NG
NG
OK
NG
Replace the ABS-ECU. (Refer to GROUP 35B.)
OK
Check trouble symptom.
NG
Repair
NG
Check the harness wire, and repair if necessary.
DBetween the ignition switch and the ABS-ECU
OK
Check trouble symptom.
Measure at the ABS-ECU connector E-107.
DDisconnect the connector, and measure at the harness side.
DStart theengine and then measure the voltage between terminal
31 and the body earth.
OK:System voltageNGCheck the following connectors:E-13, E-107
Repair
OK
Check the following connectors:E-106, E-107
NG
Check the harness wire, and repair if necessary.
DBetween the ignition switch and the ABS-ECU
OK
Check trouble symptom.
Measure at the ABS-ECU connector E-106.
DDisconnect the connector, and measure at the harness side.
DStart theengine and then measure the voltage between terminal
13 and the body earth.
OK:System voltageNG
Check the following connectors:D-32 ,
D-128, D-208, D-210 , D-213 vehicles>, E-08 , E-13, E-106
Repair


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BASIC BRAKE SYSTEM -Troubleshooting35A-10
Code No.53 Motor relay system (open circuit, short circuit
or a defective motor relay coil)Probable cause
This code is output if the motor relay circuit is short or open, ABS-ECU internal circuit
is defective, or the hydraulic brake booster (HBB) master cylinder and hydraulic unit
assembly is defective.DMalfunction of connector or harness
DMalfunction of the motor relay
DMalfunction of the ABS-ECU
DMalfunction of the HBB (master cylinder and
hydraulic unit assembly)
NG
Replace the ABS-ECU. (Refer to GROUP 35B.)NG
Repair
NG
OK
Check trouble symptom.
Repair NGNG
OK
Check trouble symptom.
Replace
OK
Check the following connectors:
B-17, B-18, B-19X, B-20X,
D-32 , D-128, D-208, D-210 vehicles>, D-213 , E-13, E-106, E-107
Check the harness wire:
DBetween the ignition switch and the motor relay
DBetween fusible link No.9 and the motor relay
DBetween the motor relay and HBB
DBetween the motor relay and the ABS-ECU
DBetween the HBB and the ABS-ECU
Check trouble symptom.
NG
NG
Replace
OK
Check the motor relay. (Refer to P.35A-24.)
Check the hydraulic brake booster (HBB).
(Refer to P.35A-23.)


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BASIC BRAKE SYSTEM -Troubleshooting35A-11
Code No.55 Pump motor system (pump motor seized or
abnormal ABS-ECU current detection circuit)Probable cause
This code is output if the motor relay drive circuit is short or open, the motor relay
or the ABS-ECU internal circuit is defective, or the hydraulic brake booster (HBB)
pump motor ormaster cylinder and hydraulic unit assembly is defective.DMalfunction of connector or harness
DMalfunction of the motor relay
DMalfunction of the ABS-ECU
DMalfunction of the HBB (pump motor or master
cylinder and hydraulic unit assembly)
NG
Repair
NG
OK
Check trouble symptom.
Repair NGNG
OK
Check trouble symptom.
Replace
OK
Check the following connectors:
B-17, B-18, B-19X, B-20X,
E-107
Check the harness wire:
DBetween fusible link No.9 and the motor relay
DBetween the motor relay and HBB
DBetween the HBB and the ABS-ECU
DBetween the HBB and the earthNG
Check the motor relay. (Refer to P.35A-24.)
NG
Replace the ABS-ECU. (Refer to GROUP 35B.)
Check trouble symptom.
NG
OKCheck the hydraulic brake booster (HBB).
(Refer to P.35A-23.)Replace NG
Replace
OKCheck the continuity and resistance of thepump motor.(Refer
to P.35A-23.)


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