Mitsubishi Lancer Evolution 8. Manual — part 154
MPI - GENERAL
13A-2
General
The following changes have been made to vehicles fitted with the 4G63-DOHC-T/C engine. Otherwise the system remains the
same.
• The engine ECU has been changed
• An immobiliser system has been fitted
• A plated metal delivery pipe has been adopted
• Fuel pump relay mounting position has been changed
MPI SYSTEM DIAGRAM
Canister
✩
2. ISC servo
Vacuum
tank
By-pass
valve
Check
valve
✩
5. Purge control
solenoid valve
✩
6. Secondary air control
solenoid valve
Secondary air valve
✩
3. Fuel pressure control solenoid valve
★
1. O2
sensor
Fuel
pressure
regulator
From
fuel
pump
Intake
★
2. Air flow sensor
★
7. Barometric pressure sensor
★
3. Intake
air temp.
sensor
✩
4. Waste gate solenoid valve
Waste gate
actuator
Catalytic converter
★
6. Crank angle sensor
★
8. Water temp. sensor
✩
1. Injector
From fuel tank
★
4. Throttle
position
sensor
Engine ECU
★
1. O2 sensor
★
2. Air flow sensor
★
3. Intake air temp.
sensor
★
4. Throttle position
sensor
★
5. Cam position
sensor
★
6. Crank angle
sensor
★
7. Barometric
pressure sensor
★
8. Water temp.
sensor
★
9. Knock sensor
• Power supply
• Ignition switch IG
• Ignition switch ST
• Vehicle speed
sensor
• A/C switch
• A/C load signal
• Power steering
fluid pressure switch
• Alternator FR signal
• Intercooler water
spray switch (auto)
• Intercooler water
spray switch (manual)
✩
1. Injector
✩
2. ISC servo
✩
3. Fuel pressure
control solenoid valve
✩
4. Waste gate
solenoid valve
✩
5. Purge control
solenoid valve
✩
6. Secondary air
control solenoid valve
• Engine control relay
• Fuel pump relay 2,3
• A/C relay
• Ignition coil
• Fan controller
• Condenser fan Relay
(HI)
• Condenser fan relay
(LO)
• Engine warning light
• Diagnosis output
• Alternator G terminal
• Intercooler water
spray relay
• Intercooler water
spray lamp
• Tachometer
➩
➩
★
5. Cam position sensor
★
9. Knock sensor
To fuel
tank
MPI – SPECIAL TOOLS
13A-3
Special Tools
Tool
Number
Name
Use
MB991502
MB991955
A: MB991824
B: MB991827
C: MB991910
D: MB991911
E: MB991825
F: MB991826
MUT-II sub-ASSY
MUT-III sub-ASSY
A:V.C.I. (Vehicle
Communication
Interface)
B:USB cable
C:MUT-III main
harness B (for use
on vehicles that
have not adopted
CAN
communication)
D:MUT-III main
harness B (for use
on vehicles that
have not adopted
CAN
communication)
E:Adapter for taking
measurements
F:Trigger harness
MPI system inspection
MB991348
Test harness set
Inspection using oscilloscope
MPI – SPECIAL TOOLS
13A-4
Tool
Number
Name
Use
MB991709
Test harness
• Troubleshooting voltage measurement
• Inspection using an oscilloscope
MB991536
TPS adjustment check
harness
Troubleshooting voltage measurement
MB991658
Test harness
Inspection using an oscilloscope
MB998464
Test harness
(4P, square)
Troubleshooting voltage measurement
MD998478
Test harness
(3P, triangular)
• Troubleshooting voltage measurement
• Inspection using an oscilloscope
MB991223
Inspection harness set
connector
• Pin contact pressure
inspection harness
• Commercial tester
connection probe
(for general
connector)
Terminal voltage measurement
Red harness (for DLI)
White harness
(for LC)
MPI – TROUBLESHOOTING
13A-5
TROUBLESHOOTING
1. Diagnosis Function
1-1. Engine warning light (engine check lamp)
Engine warning light checks have been changed.
Items that are linked to the engine warning light are:
2. Table showing diagnosis codes
Engine ECU
Air flow sensor (AFS)
Intake air temperature sensor
Throttle position sensor (TPS)
Water temperature sensor
Crank angle sensor
Cam position sensor
Injector
Ignition coil (housing a power transistor)
Barometric pressure sensor
O2 sensor
O2 sensor heater
Fuel system abnormality
Immobiliser system
Knock sensor
Code No.
Diagnosis Items
Page
PO100
Air flow sensor (AFS)
13A-6
PO105
Barometric pressure sensor
13A-8
PO110
Intake air temperature sensor system
13A-10
PO115
Water temperature sensor system
13A-11
PO120
Throttle position sensor (TPS) system
13A-13
PO130
O2 sensor system
13A-16
PO135
O2 sensor heater
13A-18
PO170
Fuel system abnormality
13A-19
PO201
No.1 injector system
13A-20
PO202
No.2 injector system
13A-21
PO203
No.3 injector system
13A-22
PO204
No.4 injector system
13A-23
PO300
Ignition coil (housing a power transistor) system
13A-24
PO325
Knock sensor system
13A-25
PO335
Crank angle sensor system
13A-26
PO340
Cam position sensor system
13A-28
PO500
Vehicle speed sensor system
13A-30
PO513
Immobiliser system
13A-31
P1500
Alternator FR terminal system
13A-32
P1603
Battery back-up line system
13A-33
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