relay MITSUBISHI MONTERO 2000 Service Manual PDF

DIESEL FUEL <4M4> -Troubleshooting13C-37
ACTUATOR TEST TABLE
Item
No.Check itemDrive Con-
tentsInspection
conditionsValue to be determined
as normalCode No.
or inspec-
tion proce-
dure No.Reference
page
02Glow plug relayTurning theIgnition switch:Battery charge is––
relay from
OFF to ON orONenergized to the glow
plug when the glow
from ON to
OFFplug relay is ON.
03A/C compressorTurning theIgnition switch:The A/C compressor––
relayrelay from
OFF to ON orONclutch makes an
audible sound.
from ON to
OFF
11Timing control
valveTurn the
timing control
valve to ONDIgnition
switch: ON
DEngine:
IdlingMakes an audible
soundCode
No.4313C-20
12Turn the
timing control
valve to OFF
Idling
DTimer piston
position
sensor:
Normal
15Glow lampTurn the glow
lamp on or offIgnition switch:
ONThe glow lamp turns
on––
16Warning lampTurn the
warning lamp
on or offIgnition switch:
ONThe warning lamp
turns onProcedure
No.3, 413C-25
22Condenser fan
relayTurning the
relay from
OFF to ON or
from ON to
OFFIgnition switch:
ONThe condenser fan
rotates.––
23Main throttle
solenoid valveTurn the
solenoid
valve from
OFF to ON or
from ON to
OFFDIgnition
switch: ON
DVehicle
speed:
0 km/h
DEngine
speed:
1,000 r/min
or lowerMakes an audible
soundCode
No.4113C-19
24Sub throttle
solenoid valveTurn the
solenoid
valve from
OFF to ON or
from ON to
OFFDIgnition
switch: ON
DVehicle
speed:
0 km/h
DEngine
speed:
1,000 r/min
or lowerMakes an audible
sound––


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DIESEL FUEL <4M4> -Troubleshooting13C-38
Item
No.Reference
page Code No.
or inspec-
tion proce-
dure No. Value to be determined
as normal Inspection
conditions Drive Con-
tents Check item
25GE actuatorTurn the GE
actuator to
ONDIgnition
switch: ON
DEngine
speed:
0 r/min orMakes an audible
soundCode
No.4813C-21
26Turn the GE
actuator to
OFF
0 r/min or
lower
DControl
sleeve posi-
tion sensor:
Normal
27Fuel cut solenoid
valveTurn the
solenoid
valve to ONDIgnition
switch: ON
DVehicle
speed:
0 km/hMakes an audible
sound––
28EGR solenoid
valve No.1Turn the
solenoid
valve to ONDIgnition
switch: ON
DVehicleMakes an audible
sound––
29Turn the
solenoid
valve to ONspeed:
0 km/h
30EGR solenoid
valve No.2Turn the
solenoid
valve from
OFF to ON or
from ON to
OFFDIgnition
switch: ON
DVehicle
speed:
0 km/hMakes an audible
sound––
33PTC heaterSwitch the
PTC heater
relay ON/
OFF.DIgnition
switch: ONVoltage on the ECU
terminal No.9: 0 - 1V––
34Middle position
of GE actuatorHold the
injection
governor in
its middle
position.DIgnition
switch: ONWhen the crankshaft
is turned clockwise
during the adjustment
of the injection timing,
the injection pipes
spray out fuel.Code
No.4813C-21


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DIESEL FUEL <4M4> -Troubleshooting13C-40
Terminal
No.Normal condition: Inspection conditions (engine status) Check item
36Selector switch be-
tween A/T and M/TIgnition switch: ON0-1V
37Inhibitor switchIgnition switch: ON
(Engine stops)Set the selector lever to P
or N0-1V
Set the selector lever to D,
2, L, or RSystem voltage
39Stop lamp switchDepress the brake pedalSystem voltage
40Brake switchDepress the brake pedal0-1V
46Control relayIgnition switch: ON0-1V
Ignition switch: ON®OFF (in about 8 seconds)System voltage
51Engine speed sensor
(backup)Engine: Idling1.5 - 2.5 V
55Accelerator pedal posi-
tion sensor (sub)Ignition switch: ONAccelerator pedal: Idling
position0.9 - 1.1 V
Accelerator pedal: Fully
opened position4.1 V or higher
71Ignition switch-STEngine: Cranking8 V or higher
74Control sleeve positionIgnition switch: ON (Engine stops)2.2 - 2.7 V
73sensor2.0 - 4.0 V
752.0 - 4.0 V
76Timer piston positionIgnition switch: ON (Engine stops)2.2 - 2.7 V
77sensor2.0 - 4.0 V
782.0 - 4.0 V
80Back-up power supplyIgnition switch: OFFSystem voltage
82Ignition switch-IGIgnition switch: ONSystem voltage
83Engine coolant tem-
perature sensorIgnition switch: ONEngine coolant tempera-
ture: 0_C3.4 - 4.5 V
Engine coolant tempera-
ture: 20_C2.6 - 3.6 V
Engine coolant tempera-
ture: 40_C1.8 - 2.5 V
Engine coolant tempera-
ture: 80_C0.7 - 1.1 V
84Accelerator pedal posi-
tion sensor (main)Ignition switch: ONAccelerator pedal: Idling
position0.9 - 1.1 V
Accelerator pedal: Fully
opened position4.1 V or higher
85Boost pressure sensorIgnition switch: ON (760 mmHg)1.2 - 1.6 V
86Vehicle speed sensorDIgnition switch: ON
DMove the vehicle forward slowly0V«5 V (repeat the
change)


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DIESEL FUEL <4M4> -Troubleshooting13C-6
Code No. 41 Throttle valve systemProbable cause
Range of Check
DEngine speed is 1,600 r/min and accelerator opening angle is 50 % or more
Set Conditions
DBoost pressure < barometric pressure + 33 kPa for 12 secondsDMalfunction of throttle valve
DOpen circuit or short-circuit in throttle valve circuit
or poor connector connection
DMalfunction of engine-ECU
NG
Replace the engine-ECU.
OK
Check the trouble symptoms.
OK
NG
Check the following connector:D-110
OK
Check the trouble symptoms.
NG
Check and repair the harness between the
engine-ECU and the throttle body assembly
connector.
Repair NG
OK
Check the following connector:B-65 NG
OK
Check the trouble symptoms.
NG
Check and repair the harness between the
control relay and the throttle body assembly
connector.
Repair NG
OK
Check the following connector:B-25X NGMeasure at throttle body assembly connector
B-65.
DIgnition switch: ON
DDisconnect the connector and measure at
the harness side.
DVoltage between (2), (5) and earth
OK:System voltage
RepairThrottle body assembly check (P.13C-12.)NG
Measure at engine-ECU connector D-110.
DIgnition switch: ON
DDisconnect the connector and measure at
the harness side.
DVoltage between (14), (18), (19), (20) and
earth
OK:9 V or more
Repair
Code No. 46 Injection correction ROM systemProbable cause
Range of Check
DIgnition switch: ON
Set Conditions
DWhen communication failsDInjection correction ROM inoperative
DEngine-ECU inoperative
DShort circuit, open circuit, or connector contact
inoperative
Inspection procedures are the same as before.


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DIESEL FUEL <4M4> -Troubleshooting13C-7
Code No. 48 GE actuator (in the middle of control sleeve
position sensor inoperative) systemProbable cause
Range of Check
DIgnition switch: ON
Set Conditions
DTarget value minus actual value for 0.5 second is 1 V or more.DControl sleeve position sensor inoperative
DGE actuator inoperative
DControl sleeve position sensor open circuit, short
circuit, or connector contact inoperative
DEngine-ECU inoperative
NGGE actuator check (Refer to
P.13C-46.*)Replace injection pump assembly.
NGMeasure at B-38 injection pump
assembly connector.
DDisconnect the connector and
measure at the harness side.
DVoltage between 6 and the earth
(Ignition switch: ON)
OK:System voltageCheck and repair the harness
between the control relay and the
injection pump assembly connector. OK
Check the following connector:
D-110NG OK
Repair
Check the trouble symptoms.Replace the engine-ECU. OK
NOTE:
*: Refer to the 2001 PAJERO Workshop Manual (Pub. No. PWJE0001).


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DIESEL FUEL <4M4> -Troubleshooting13C-8
Code No. 51 EGR valve assembly systemProbable cause
Range of Check
DIgnition switch: ON
Set Conditions
DEGR sensor output voltage is continuously 0.5 V or less, or 4.5 V or more
for 1 second or more
DDifference between EGR sensor output voltage target value and output is
continuously 0.5 V or more for 3 seconds or moreDMalfunction of EGR valve assembly
DOpen circuit or short-circuit in EGR valve
assembly circuit or poor connector connection
DMalfunction of engine-ECU
Check and repair the harness
between the engine-ECU and the
EGR valve assembly connector.
NG
OKCheck the trouble symptoms.
OK
Transient malfunction (Refer to
GROUP 00 - Point to Note for
Intermittent Malfunctions.)
NGMeasure at engine-ECU connector
D-113.
DConnector connected
DIgnition switch: ON
DVoltage between (90) and earth
OK:0.5 - 4.5 VCheck the following connector:
D-113NG
Repair OK
Check and repair the harness
between the engine-ECU and the
EGR valve assembly connector.
NG
OKCheck the trouble symptoms.
OK
Transient malfunction (Refer to
GROUP 00 - Point to Note for
Intermittent Malfunctions.)
OKMUT-IIdata list
31 EGR sensor (Target value)
32 EGR sensor (Output value)Transient malfunction (Refer to
GROUP 00 - Point to Note for
Intermittent Malfunctions.)
NGMeasure at EGR valve assembly
connector B-64.
DDisconnect the connector and
measure at the harness side.
DVoltage between (3) and earth
OK:4.5 - 5.5 V
(Ignition switch: ON)
DContinuity between (2) and earth
OK:ContinuityCheck the following connector:
D-112NG
Repair NG
To the next pageOK
Check and repair the harness
between the control relay and the
EGR valve assembly connector.
NG
OKCheck the trouble symptoms.
OK
Transient malfunction (Refer to
GROUP 00 - Point to Note for
Intermittent Malfunctions.)
NGMeasure at EGR valve assembly
connector B-64.
DIgnition switch: ON
DDisconnect the connector and
measure at the harness side.
DVoltage between (6) and earth
OK:System voltageCheck the following connector:
B-25XNG
Repair OK


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DIESEL FUEL <4M4> -Troubleshooting13C-11
ENGINE-ECU CHECK
TERMINAL VOLTAGE TABLE
Terminal No.Check itemInspection conditions (engine status)Normal condition
14Throttle body assembly (1)Ignition switch: ON (Engine stops)9 V or more
17EGR motorIgnition switch: ON (Engine stops)System voltage
18Throttle body assembly (2)Ignition switch: ON (Engine stops)9 V or more
19Throttle body assembly (3)Ignition switch: ON (Engine stops)9 V or more
20Throttle body assembly (4)Ignition switch: ON (Engine stops)9 V or more
33A/C load signalEngine: Idle
A/C switch: ONDuring weak cooling or
heatingSystem voltage
During normal cooling0-1V
During strong coolingChanges repeatedly
between 0 V and 12 V
37Clutch switch Clutch pedal depressed0-1V
Inhibitor switch Ignition switch:
ON (Engine stops)Move selector lever to N
or P0-1V
Move selector lever to D,
2, L or RSystem voltage
38Control relay (no immobi-
lizer)
Ignition switch: ON0-1V
lizer)
Ignition switch: ON→OFF (after approx. 8
seconds)System voltage
41Select switch Ignition switch:
ON (Engine stops)Move shift lever to 4st or
RSystem voltage
421st - 2nd switch Ignition switch:
ON (Engine stops)Move shift lever to 1st or
2ndSystem voltage
433rd - 4th switch Ignition switch:
ON (Engine stops)Move shift lever to 3rd or
4thSystem voltage
445th - R switch Ignition switch:
ON(Enginestops)
Move shift lever to 5th0-1V
ON(Engine stops)
Move shift lever to RSystem voltage
58TachometerDuring idlingChanges repeatedly
between 0 V and 12 V
90EGR valve sensorDuring racingChanges between 0.5
V and 4.5 V


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MITSUBISHI SC-Troubleshooting MITSUBISHI SC-Troubleshooting13E-7
OK
NG
Repair
OK
Check the trouble symptoms.
NG
OKNG
Repair
OK
(1)NGCheck the following connectors:
B-25X, D-128, E-122,
E-121
NG
Check the harness wire between the engine control relay and
the SC-ECU, and repair if necessary. (2)NG
OK
Check the trouble symptoms.
NG
Replace
NG
Check the harness wire between the battery and the SC-ECU,
and repair if necessary.
Check the following connectors:
D-27, D-223 ,
D-31 , E-13, E-122, E-120
Measure at SC-ECU connectors E-120, E-121.
DDisconnect the connector and measure at the harness
side.
(1) Voltage between terminal 25 and body earth
(Ignition switch: ON)
OK:
System voltage
(2) Voltage between terminal 39 and body earth
OK:
System voltage
NG (1)NG
Check the harness wire between the SC-ECU and the body
earth, and repair if necessary.
Repair
NG
Replace the SC-ECU.
Check the trouble symptoms.
Check the following connectors:
E-120, E-122
NG
(2), (3)NG
Check the harness wire between the SC-ECU and the body
earth, and repair if necessary.
OK
NG
Repair
NGCheck the trouble symptoms.
Check the following connector:
E-121, E-122
OK
Check the trouble symptoms.
Measure at SC-ECU connector E-120, E-121.
DDisconnect the connector and measure at the harness
side.
(1) Continuity between 31 and body earth
OK:
Continuity
(2) Continuity between 13 and body earth
OK:
Continuity
(3) Continuity between 26 and body earth
OK:
Continuity
Check the trouble symptoms.
Check the fusible link No.2 and dedicated fuse No.7
Code No. 51 Vehicle speed sensor systemProbable cause
This diagnosis code will be set when the vehicle speed signal from the vehicle
speed sensor is not the same as that from the wheel speed sensor (FR).DMalfunction of vehicle speed sensor system
DMalfunction of wheel speed sensor system
DMalfunction of the SC-ECU
NG
Check the trouble symptoms.
Replace the SC-ECU.YES
NOCheck the vehicle speed sensor system (Refer to Basic
Manual GROUP 54A - Combination Meter).Does the speedometer operate normally?
YES
NOCheck the ABS system (Refer to Basic Manual GROUP 35B
- ABS).Does the ABS system operate normally?


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MITSUBISHI SC-Troubleshooting13E-13
Inspection procedure 2
Communication with MUT-
IIand the SC-ECU is not
possible.
Probable cause
The cause is probably an open circuit in the SC-ECU power supply circuit or an
open circuit in the diagnosis output circuit.DMalfunction of harness or connector
DMalfunction of the SC-ECU
NG
Repair
OK
Check the trouble symptoms.
NG
Check the harness wire between SC-ECU and diagnosis
connector, and repair if necessary.
OK
Measure at SC-ECU connector E-121 and diagnosis connector
D-23.
DDisconnect the connectors and measure at the harness
side.
DContinuity between the following terminals:
Between terminals 1 (SC-ECU side) and 1 (diagnosis
connector side)
Between terminals 14 (SC-ECU side) and 7 (diagnosis
connector side)
Between terminals 23 (SC-ECU side) and 14 (diagnosis
connector side)
OK:
ContinuityNGCheck the following connectors:
E-121, E-122, D-128, E-13,
D-33, D-222, D-23
OK
NG
Repair
OK
Check the trouble symptoms.
NG
OKNG
Repair
OK
(1)NGCheck the following connectors:
B-25X, D-128, E-122,
E-121
NG
Check the harness wire between the engine control relay and
the SC-ECU, and repair if necessary. (2)NG
OK
Check the trouble symptoms.
NG
Replace
NG
Check the harness wire between the battery and the SC-ECU,
and repair if necessary.
Check the following connectors:
D-27, D-223 ,
D-31 , E-13, E-122, E-120
Measure at SC-ECU connectors E-120, E-121.
DDisconnect the connector and measure at the harness
side.
(1) Voltage between terminal 25 and body earth
(Ignition switch: ON)
OK:
System voltage
(2) Voltage between terminal 39 and body earth
OK:
System voltage
NG (1)NG
Check the harness wire between the SC-ECU and the body
earth, and repair if necessary.
Repair
NG
Replace the SC-ECU.
Check the trouble symptoms.
Check the following connectors:
E-120, E-122
NG
(2), (3)NG
Check the harness wire between the SC-ECU and the body
earth, and repair if necessary.
OK
NG
Repair
NGCheck the trouble symptoms.
Check the following connector:
E-121, E-122
OK
Check the trouble symptoms.
Measure at SC-ECU connector E-120, E-121.
DDisconnect the connector and measure at the harness
side.
(1) Continuity between 31 and body earth
OK:
Continuity
(2) Continuity between 13 and body earth
OK:
Continuity
(3) Continuity between 26 and body earth
OK:
Continuity
Check the trouble symptoms.
Check the fusible link No.2 and dedicated fuse No.7


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13E-1
DIESEL FUEL
<4D5-STEPIII
>
CONTENTS
GENERAL 2.................................
Outline of Change 2............................
GENERAL INFORMATION 2...................
SERVICE SPECIFICATIONS 4.................
SEALANT 4..................................
SPECIAL TOOLS 5...........................
TROUBLESHOOTING 6.......................
ON-VEHICLE SERVICE 55....................
Injection Nozzle Check and Adjustment 55.........
Injection Timing Check and Adjustment 55.........
Idle Speed Check and Adjustment 55.............
Accelerator Pedal Position Sensor (APS)
Adjustment 56.................................
Control Relay Continuity Check 57................
Accelerator Pedal Position Sensor (APS)
Check 57......................................Idle Switch Check 58............................
Boost Air Temperature Sensor (Intake Air
Temperature Sensor) Check 58..................
Engine Coolant Temperature Sensor Check 59.....
Evacuation of Water from Fuel Filter 59............
Fuel Filter Cartridge Replacement 60..............
Evacuation of Air from Fuel Line 60...............
EGR Valve Position Sensor Check 60.............
Fuel Injection Pump Check 61....................
Throttle Solenoid Valve Check 62.................
Throttle Actuator Check 63......................
Variable Geometry Solenoid Valve Check 63.......
EGR Control Solenoid Valve Check 63............
FUEL INJECTION NOZZLE 64.................
FUEL INJECTION PUMP 64...................
CRANKSHAFT POSITION SENSOR 66.........
ENGINE-ECU 66.............................


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