Mitsubishi L200. Manual — part 52
13A-4
CODE NO. U1073 BUS OFF . . . . . . . . . . .
CODE NO. U1101 A/T-ECU TIME-OUT <A/T>
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CODE NO. U1102 ASTC-ECU TIME-OUT <Except
vehicles for Morocco> . . . . . . . . . . . . . . . . .
CODE NO. U1109 ETACS TIME-OUT . . . .
CODE NO. U1110 A/C-ECU TIME-OUT <Euro5>
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CODE NO. U1117 ETACS-ECU (IMMOBILIZER-ECU)
TIME-OUT. . . . . . . . . . . . . . . . . . . . . . . . . .
CODE NO. U1190 THE NETWORK SYSTEM
DIAGNOSIS CODE OUTPUT PERMITTED SIGNAL
CANNOT BE RECEIVED . . . . . . . . . . . . . .
SYMPTOM CHART. . . . . . . . . . . . . . . . . . .
CHECK CHART CLASSIFIED BY PROBLEM
SYMPTOMS . . . . . . . . . . . . . . . . . . . . . . . .
SYMPTOM PROCEDURES . . . . . . . . . . . .
COMMUNICATION WITH ENGINE-ECU IS NOT
POSSIBLE . . . . . . . . . . . . . . . . . . . . . . . . .
THE ENGINE WARNING LAMP DOES NOT
ILLUMINATE RIGHT AFTER THE IGNITION SWITCH
IS TURNED TO THE "ON" POSITION . . . .
THE ENGINE WARNING LAMP REMAINS
ILLUMINATING AND NEVER GOES OUT OR IS
BLINKING . . . . . . . . . . . . . . . . . . . . . . . . . .
STARTING IMPOSSIBLE (NO INITIAL
COMBUSTION) <M/T> . . . . . . . . . . . . . . . .
STARTING IMPOSSIBLE (NO INITIAL
COMBUSTION) <A/T> . . . . . . . . . . . . . . . .
STARTING IMPOSSIBLE (STARTER OPERATIVE
BUT NO INITIAL COMBUSTION). . . . . . . .
IMPROPER STARTING (LONG TIME TO START)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IMPROPER IDLING . . . . . . . . . . . . . . . . . .
THE ENGINE STALLS WHEN DECELERATING
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
POOR ACCELERATION. . . . . . . . . . . . . . .
A LARGE AMOUNT OF FUEL CONSUMPTION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
KNOCKING, ABNORMAL NOISE. . . . . . . .
WHITE SMOKE. . . . . . . . . . . . . . . . . . . . . .
BLACK SMOKE . . . . . . . . . . . . . . . . . . . . .
BATTERY RUNDOWN <Euro5>. . . . . . . . .
BATTERY RUNDOWN <Except Euro5>. . .
OVERHEATING . . . . . . . . . . . . . . . . . . . . .
ENGINE-ECU POWER SUPPLY SYSTEM
ENGINE-ECU BATTERY BACK-UP SYSTEM
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1ST AND 2ND RAIL SWITCH SYSTEM <M/T>
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BACK-UP LAMP SWITCH SYSTEM <M/T>
4LLC SWITCH SYSTEM <M/T-High power engine
vehicle> . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONDENSER FAN RELAY SYSTEM <Vehicles with A/
C condenser fan> . . . . . . . . . . . . . . . . . . . .
A/C SWITCH SYSTEM . . . . . . . . . . . . . . . .
A/C COMPRESSOR RELAY SYSTEM . . . .
POWER STEERING FLUID PRESSURE SWITCH
SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . .
GLOW SYSTEM <Except Euro5> . . . . . . . .
PTC HEATER RELAY SYSTEM . . . . . . . . .
BLOWER SWITCH SYSTEM <Euro5> . . . .
REAR WINDOW DEFOGGER SYSTEM <Euro5>
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DPF LAMP SYSTEM <Euro5> . . . . . . . . . .
DATA LIST REFERENCE TABLE. . . . . . . .
ACTUATOR TEST REFERENCE TABLE . .
CHECK AT THE ENGINE-ECU TERMINALS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSPECTION PROCEDURE USING AN
OSCILLOSCOPE . . . . . . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE . . . . . . . . . . .
EVACUATION OF WATER FROM FUEL FILTER
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUEL LINE AIR-BLEEDING . . . . . . . . . . . .
FUEL FILTER CARTRIDGE REPLACEMENT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUEL LINE LEAK CHECK. . . . . . . . . . . . . .
COMPONENT LOCATION . . . . . . . . . . . . .
ENGINE CONTROL RELAY CONTINUITY CHECK
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE COOLANT TEMPERATURE SENSOR
CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INJECTOR CHECK . . . . . . . . . . . . . . . . . . .
INTAKE AIR TEMPERATURE SENSOR NO.1 CHECK
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INTAKE AIR TEMPERATURE SENSOR NO.2 CHECK
<Except Euro5>. . . . . . . . . . . . . . . . . . . . . .
SUCTION CONTROL VALVE CHECK . . . .
FUEL TEMPERATURE SENSOR CHECK .
COMMON RAIL CHECK . . . . . . . . . . . . . . .
THROTTLE VALVE CONTROL SERVO CHECK
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUEL INJECTOR . . . . . . . . . . . . . . . .
FUEL INJECTOR REMOVAL AND INSTALLATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COMMON RAIL AND SUPPLY PUMP
COMMON RAIL AND SUPPLY PUMP REMOVAL AND
13A-5
INSTALLATION. . . . . . . . . . . . . . . . . . . . . .
SUCTION CONTROL VALVE . . . . . .
SUCTION CONTROL VALVE REMOVAL AND
INSTALLATION. . . . . . . . . . . . . . . . . . . . . .
THROTTLE BODY ASSEMBLY . . . .
THROTTLE BODY ASSEMBLY REMOVAL AND
INSTALLATION. . . . . . . . . . . . . . . . . . . . . .
CAMSHAFT POSITION SENSOR . . .
CAMSHAFT POSITION SENSOR REMOVAL AND
INSTALLATION . . . . . . . . . . . . . . . . . . . . . .
CRANK ANGLE SENSOR . . . . . . . . .
CRANK ANGLE SENSOR REMOVAL AND
INSTALLATION . . . . . . . . . . . . . . . . . . . . . .
ENGINE-ECU . . . . . . . . . . . . . . . . . . .
ENGINE-ECU REMOVAL AND INSTALLATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GENERAL INFORMATION
DIESEL FUEL
13A-6
GENERAL INFORMATION
M1133000101089
The common rail fuel injection system consists of
sensors which detect the condition of the diesel
engine, an engine electronic control unit (engine-
ECU) which controls the system based on signals
from these sensors, and actuators which operate
according to control commands from the engine-
ECU. The engine-ECU carries out activities such as
fuel injection control and idle speed control. In addi-
tion, the engine-ECU is equipped with several self-
diagnosis functions which make troubleshooting eas-
ier in the event that a problem develops.
FUEL INJECTION CONTROL
The injector drive time, the injection timing and the
fuel pressure are controlled so that the appropriate
quantities of fuel are supplied to the engine in
response to engine conditions which can change fre-
quently. A single injector is mounted at each cylinder.
The supply pump increases the fuel pressure to the
pressure which is required for high-pressure injec-
tion, and then send the fuel each injector.
IDLE SPEED CONTROL
The idle speed is kept at the optimum speed by con-
trolling the fuel injection quantity in accordance with
changes in idling conditions and engine load during
idling.
The engine-ECU drives the fuel injector to keep the
engine running at the pre-set idle target speed in
accordance with the engine coolant temperature and
A/C and other electrical load.
SELF-DIAGNOSIS FUNCTION
• When an abnormality is detected in any of the
sensors or actuators, the engine warning lamp
illuminates to warn the driver.
• When an abnormality is detected in any of the
sensors or actuators, a diagnosis code number
corresponding to the problem which occurred is
output.
• The RAM data relating to the sensors and actua-
tors which is stored in the engine-ECU can be
read using the M.U.T.-III. In addition, the actuator
can be force-driven under certain conditions.
OTHER CONTROL FUNCTIONS
1. Power Supply Control
When the ignition switch ON signal is input by the
ignition switch, the engine-ECU turns ON the
power transistor for controlling the engine control
relay. As a result, current flows through the coil in
the engine control relay, causing the relay switch
to turn ON and supply power to the sensors and
actuators.
2. Glow Control
Refer to GROUP 16
(Refer to , GROUP 16
− Glow System).
3. EGR Control
Refer to GROUP 17
[Refer to , GROUP 17
− Engine And Emission Con-
trol
− Exhaust Gas Recirculation (EGR) System].
4. A/C Relay Control
Turns the compressor clutch of the A/C ON and OFF.
5. Condenser Fan Motor Relay Control
Controls the condenser fan motor relay based on the
A/C switch, A/C load signal, engine coolant tem-
perature and vehicle speed input signals.
6. PTC Heater Relay Control <Vehicle with PTC
heater>
The PTC heater is turned ON is accordance with the
A/C operation at the engine cold state.
7. DPF System Control <Euro5>
[Refer to GROUP 17
− Emission Control − Diesel
Particulate Filter (DPF) System <Euro5>
− Gen-
eral Information (DPF system) ].
8. Variable Geometry Turbocharger Control
<Euro5>
Performing the duty control over the variable geome-
try control solenoid valve, the engine-ECU opens
and closes the nozzle vane located in the turbo-
charger assembly. This allows the boost pressure
to be obtained in accordance with the engine
operation.
9. Alternator Output Current Control <Euro5>
GENERAL INFORMATION
DIESEL FUEL
13A-7
Prevents the alternator output current from increas-
ing suddenly and the idle speed from varying
such as when the headlamp is turned on.
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