2000 MITSUBISHI MONTERO ignition

GDI -Troubleshooting 13A-54
OK
Check the harness wire between the
engine-ECU and the intermediate
connector.NG
Repair
OK
Check the following connector:
D-116NG
Repair
OK
Check the harness wire between the
ignition coil connector for a defective
cylinder and the intermediate
connector.NG
Repair
MUT-
IIActuator Test
01 No.1 injector
02 No.2 injector
03 No.3 injector
04 No.4 injector
05 No.5 injector
06 No.6 injector
OK:
The idling condition should
change.
Reference
When the cylinder (defective
cylinder) whereidling conditiondoes
not change is detected after
suspending the injector, go to (1)
and inspect the spark plug, the
ignition coil, the connector, and the
harness of the defective cylinder.
(When more than one cylinder are
detected, inspect all of them.)
When all the cylinders are OK, go to
(2).(1)Check the following connectors:
B-107 and the ignition coil
connectors, which correspond to
defective cylinders (B-101, B-108,
B-112, B-113, B-116, B-119).NG
Repair
OK
Check the sparkplug and the
ignition coil for a defective cylinder.
(Refer to GROUP 16 - Ignition
System.)NG
Replace
OK
Use an analyzer to measure the signal waveform at engine-ECU connector D-116.
DEngine: Idling
DThe voltage between the ignition coil primary signal terminal for a defective cylinder
and earth
OK:
A normal waveform should be displayed as described on P.13A-122 (Inspection
Procedure Using an Analyzer).
OK
Repair the ignition coil assembly for
a defective cylinder and the spark
plug.
NG
Replace the engine-ECU.
(2)
Use an analyzer to measure the
signal waveform at the ignition failure
sensor connector B-04.
DUse test harness (MB991536) to
connect the connector, and
measure at the pick-up harness.
DEngine: Idling
DThe voltage between terminal 2
and earth
OK:
A normal waveform should
be displayed as described
on P.13A-122 (INSPEC-
TION PROCEDURE US-
ING AN ANALYZER).
Reference
When a normal waveform is
displayed, compare it with that of the
ignition coil primary signal at the
engine-ECU terminal to determine
the cylinder (defective cylinder) with
an abnormal waveform.
®When one or more cylinders are
abnormal, go to (1)
®When all of the cylinders are
abnormal, go to (3)
®When a normal waveform is
displayed, go to (4).(3)
Check the following connectors:
B-04, D-117NG
Repair
OK
Check the harness wires between
the ignition failure sensor and the
engine-ECU, and between the
ignition failure sensor and earth.NG
Repair
OK
Repair the ignition failure sensor
Check the trouble symptoms.NGReplace the engine-ECU.
(4)Check the trouble symptoms.OKIntermittent malfunction
(Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions.)
NG
Check the sparkplug and the
ignition coil for a defective
cylinder.(Refer to GROUP16 -
Ignition System.)
(1)


www.WorkshopManuals.co.uk


Purchased from www.WorkshopManuals.co.uk

GDI -Troubleshooting GDI -Troubleshooting 13A-55
Code No.P0301 No.1 cylinder misfire detected.
Code No.P0302 No.2 cylinder misfire detected.
Code No.P0303 No.3 cylinder misfire detected.
Code No.P0304 No.4 cylinder misfire detected.
Code No.P0305 No.5 cylinder misfire detected.Probable cause
Range of Check
DThe enginespeed is 500 - 4,500 r/min.
DWhile the engine is runningexcept deceleration and sudden acceleration.
Set Conditions
DThe number of misfires exceeds a predetermined number per 200engine
revolutions (Misfire has occurred in only one cylinder).
or
DThe number of misfires exceeds a predetermined number per 100engine
revolutions (Misfire has occurred in only one cylinder).DMalfunction of the ignition system
DAbnormal compression
DMalfunction of injector
DMalfunction of engine-ECU
NG
Check the harness wire between the
ignition coil and the engine-ECU.
NG
Replace
NG
Repair
(2) NG
OK
Check the ignition failure sensor
(Refer to GROUP 16 - Ignition
System.)
OK
Check the harness wire between the
ignition coil and the earth, and repair
if necessary. (3) NG
OK
Measure at ignition coil connectors
B-101, B-108, B-112, B-113, B-116,
B-119.
DDisconnect the connector and
measure at the harness side.
(1) The voltage between terminal 1
and earth
(Ignition switch: ON)
OK:
System voltage
(2) The voltage between terminal 3
and earth
(Engine: cranking)
OK:
0.5 - 4.0 V
(3) The resistance between terminal
2 and earth
OK:
2Wor less(1) NGCheck the following connectors:
B-04, B-107, D-208, D-223NG
Repair
Check the ignition coil (Refer to
GROUP 16 - Ignition System.)
Check the compression pressure.
(Refer to GROUP 11A - On-vehicle
Service.)Repair
Replace the engine-ECU.
OK
Check the harness wire between the
ignition coil and the ignition failure
sensor, and between the ignition coil
and the ignition failure sensor.
NG
Repair
OK
NGNG
Repair
OKReplace
NG
Check the spark plugs.
Check the trouble symptoms.
OK
Check the trouble symptoms.NGReplace the engine-ECU.
Check the following connectors:
B-101, B-108, B-112, B-113, B-116,
B-119
Check the following connector:
B-107, D-116
OK


www.WorkshopManuals.co.uk


Purchased from www.WorkshopManuals.co.uk

GDI -Troubleshooting 13A-57
OK
Check the harness wire between the
crankanglesensor and the
engine-ECU, and repair if necessary.
MUT-
IIData list
22 Crankanglesensor
OK:
Refer to P.13A-105, DATA
LIST REFERENCE TABLE.OKIntermittent malfunction
(Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions.)
OK
Measure at the crankanglesensor
connector B-52.
DDisconnect the connector and
measure at the harness side.
(1) The resistance between terminal
1 and earth
OK:
2Wor less
(2) The voltage between terminal 2
and earth
(Ignition switch: ON)
OK:
4.8 - 5.2 V
(3) The voltage between terminal 3
and earth
(Ignition switch: ON)
OK:
System voltage(1) NGCheck the harness between the
crankanglesensor and earth, and
repair if necessary.
NG
Repair
NG
Check the following connector:
D-117NG
Repair
NG
Check the following connector:
B-52NG
Repair
(2) NGMeasure at engine-ECU connector
D-117.
DMeasure the voltage at the
engine-ECU terminal.
DDisconnect the connector B-52
DIgnition switch: ON
DThe voltage between terminal 43
and earth.
OK:
4.8 - 5.2 VOKCheck the following connector
:
D-117
Check the following connector:
B-25XNG
Repair
OK
Check the harness wire between the
crankanglesensor and the
engine-ECU.NG
Repair
OK
Check the trouble symptoms.NGReplace the engine-ECU.
(3) NG
OK
Check the harness wire between the
crankanglesensor and theengine
control relay, and repair if necessary.OK
Use an analyzer to measure the
output waveform at the crankangle
sensor connector B-52.
DUse the test harness
(MD998478) to connect the
connector, and measure at the
pickup harness side.
DEngine: Idling
DThe voltage between terminal 2
and earth
OK:
A normal waveform should
be displayed as described
on P.13A-119 (Inspection
Procedure Using an Ana-
lyzer). Its maximum value
should be 4.8 V or more,
and its minimumvalue
should be 0.6 V or less
with no noise in waveform.NGCheck the crankanglesensor vaneNG
Replace
OK
Replace the crankanglesensor
Check the trouble symptoms.
NG
Check the following connectors:
B-25X, D-117NG
Repair
OK
Check the harness wires between
the crankanglesensor and the
engine-ECU, crankanglesensor and
the engine controlrelay, and the
crankanglesensor and earth. Then,
repair if necessary.
OK
Check the trouble symptoms.
NG
Replace the engine-ECU.


www.WorkshopManuals.co.uk


Purchased from www.WorkshopManuals.co.uk

GDI -Troubleshooting 13A-59
OK
Check the harness wire between the
intermediate connector and the
engine-ECU, and repair if necessary.NG
Repair
NG
NG
Repair
NG
Repair
(2) NGMeasure at engine-ECU connector
D-117.
DMeasure the voltage at the
engine-ECU terminal.
DDisconnect connector B-110.
DIgnition switch: ON
DThe voltage between terminal 50
and earth
OK:
4.8 - 5.2 VOKCheck the following connector
:
D-117
Check the harness wire between the
intermediate connector and earth,
and repair if necessary.
OK
Check the harness wire between the
intermediate connector and the
engine controlrelay, and repair if
necessary.
(3) NG
OK
Measure at intermediate connector
B-110
DDisconnect the connector and
measure at the harness side.
(1) The voltage between terminal 1
and earth
(Ignition switch: ON)
OK:
System voltage
(2) The voltage between terminal 2
and earth
(Ignition switch: ON)
OK:
4.8 - 5.2 V
(3) The resistance between terminal
3 and earth
OK:
2Wor less(1) NGCheck the following connector:
B-25XNG
Repair
OK
Replace the camshaft position
sensor
Check the trouble symptoms.
OK
NG
Repair
OK
Check the harness wires between the intermediate connector and the engine-ECU, the
intermediate connector and theengine controlrelay, and the intermediate connector and
earth. Then, repair if necessary.
NG
Replace the engine-ECU.
OK
Check the harness wire between the
intermediate connector and the
engine-ECU.NG
Repair
OK
Use an analyzer to measure the
output waveform at intermediate
connector B-110.
DUse test harness (MB991658) to
connect the connector, and
measure at the pick-up harness.
DEngine: Idling
DThe voltage between terminal 2
and earth
OK:
A normal waveform should
be displayed as described
on P.13A-119 (Inspection
Procedure Using an Ana-
lyzer), its maximum value
should be 4.8 V or more,
and its minimumvalue
should be 0.6 V or less
with no noise in waveform.(1) NGCheck the following connector:
B-109NG
Repair
OK
Check the harness wire between the
camshaft position sensor and the
intermediate connector.NG
Repair
NG
Check the camshaft position sensing
cylinderNG
OK
Check the trouble symptoms.Intermittent malfunction
(Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.)
OK
Check the trouble symptoms.NGReplace the engine-ECU.
Replace
OK
Check the following connector:
B-110
Check the following connector:
D-117
Check the following connectors:
B-25X, D-117


www.WorkshopManuals.co.uk


Purchased from www.WorkshopManuals.co.uk

GDI -Troubleshooting 13A-60
Code No.P0403 EGR valve systemProbable cause
Range of Check
DIgnition switch: OFF to ON
DEGR valve is in operation after theengine startingprocess is complete.
Set Conditions
DOff - surge voltage is not generated from the motor coil while the EGR valve
control motor is running.DMalfunction of the EGR valve
DOpen or short circuit in the EGR valve circuit or
loose connector contact
DMalfunction of engine-ECU
Measure at EGR valve connector B-60
DDisconnect the connector, and
measure at the EGR valve side.
DThe resistance between terminals 1
and 2
DThe resistance between terminals 2
and 3
DThe resistance between terminals 4
and 5
DThe resistance between terminals 5
and 6
OK:
15 - 20WNG
Replace
OK
Check the harness wire between the
EGR valve and theengine controlrelay,
and repair if necessary.
NG
Replace the engine-ECU.
OK
NG
Check the following connector:
B-25XNG
Repair
OK
Check the following connector:
B-60NG
Repair
OK
Measure at engine-ECU connector
D-116.
DMeasure the voltage at the
engine-ECU terminal.
DThe voltage between terminal 5
and earth.
DThe voltage between terminal 6
and earth.
DThe voltage between terminal 32
and earth.
DThe voltage between terminal 34
and earth.
OK:
The voltage changes as follows
for three seconds when the igni-
tion switch is turned ON.
(When using a circuit tester)
5 V and 8 V alternates
(When using an analyzer)
1 V or less and system voltage
alternatesNGCheck the following connector:
D-116NG
Repair
OK
Check the harness wire between the
EGR valve and the engine-ECU.
OK
Check the following connector:
D-116NG
Repair
OK
Check the harness wires between the
EGR valve and theengine control
relay, and between the EGR valve
and the engine-ECU.NG
Repair
OK
Check the trouble symptoms.OKIntermittent malfunction
(Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions.)NG
Repair
OK
Replace the engine-ECU.
Measure at EGR valve connector
B-60
DDisconnect the connector and
measure at the harness side.
DIgnition switch: ON
DThe voltage between terminal 2
and earth
DThe voltage between terminal 5
and earth
OK:
System voltage


www.WorkshopManuals.co.uk


Purchased from www.WorkshopManuals.co.uk

GDI -Troubleshooting 13A-62
Code No.P0443 Purge control solenoid valve systemProbable cause
Range of Check
DIgnition switch: ON
DBattery voltage is 10 V or more.
Set Conditions
DThe solenoid coil surge voltage (battery voltage + 2 V) is not detected when
the purge control solenoid valve is turned from on to off.DMalfunction of the purge control solenoid valve
DOpen or short circuit in the purge control solenoid
valve circuit or loose connector contact
DMalfunction of engine-ECU
Repair
MUT-
IIActuator Test
08 Purge control solenoid valve
OK:
Operating sound can be
heard and the valve vibrates.OKIntermittent malfunction
(Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions.)
NG
Check the harness wire between the
purge control solenoid valve and the
engine controlrelay, and repair if
necessary.
NG
Measure at the purge control
solenoid valve connector B-106.
DDisconnect the connector, and
measure at the solenoid valve
side.
DThe resistance between terminals
1 and 2
OK:
28 - 36W(at 20_C)NG
Replace
OK
Measure at the purge control
solenoid valve connector B-106.
DDisconnect the connector and
measure at the harness side.
DIgnition switch: ON
DThe voltage between terminal 2
and earth
OK:
System voltageNGCheck the following connector:
B-25XNG
Repair
OK
Check the following connector:
B-106NG
Repair
OK
OK
Measure at engine-ECU connector
D-116.
DMeasure the voltage at the
engine-ECU terminal.
DIgnition switch: ON
DThe voltage between terminal 16
and earth
OK:
System voltageNGCheck the following connector:
D-119NG
Repair
OK
Check the following connector:
D-116NG
Repair
OK
NG
Repair
OK
Check the trouble symptoms.
NG
Replace the engine-ECU.OKNG
Replace the engine-ECU.
Check the harness wires between
the purge control solenoid valve and
the engine controlrelay, and
between the purge control solenoid
valve and the engine-ECU.
Check the harness wire between the
purge control solenoid valve and the
engine-ECU.


www.WorkshopManuals.co.uk


Purchased from www.WorkshopManuals.co.uk

GDI -Troubleshooting 13A-64
Code No.P1220 Electronic-controlled throttle valve
systemProbable cause
Range of Check
DIgnition switch: ON
DError in communication between the engine-ECU and the throttle valve
controller
Set Conditions
DOutput voltage of throttle position sensor (2nd channel) fluctuates significantly
(approx. 1 V or more) from an expected value, based on that of the
accelerator pedal positionsensor (2nd channel).
Range of Check
DIgnition switch: ON
DError in communication between the throttle valve controller and the
engine-ECU
Set Conditions
DThe output voltage of the throttle position sensor (2nd channel) is significantly
different (approx. 1 V) from the the throttle valveopening angle (voltage),
which the engine-ECU request the throttle valve controller.DShort in communicationline
DMalfunction of the engine-ECU
DMalfunction of the throttle valve controller
OK
Check the harness wire between the throttle valve controller
and the engine-ECU.NG
Repair
NG
Replace the engine-ECU.
Check the following connectors:
D-11, D-118NG
Repair
OK
NG
Replace the throttle valve controller.
Check the trouble symptoms.
Check the trouble symptoms.


www.WorkshopManuals.co.uk


Purchased from www.WorkshopManuals.co.uk

GDI -Troubleshooting 13A-65
Code No.P1221 Throttle valve position feedback systemProbable cause
The throttle valve controller judges a malfunction, and then transmit the result to
the engine-ECU.
Range of Check
DIgnition switch: ON
DBattery voltage: 10 V or more
Set Conditions
DFailure in the position feedback
(The engine-ECU detects that the current in the motor isexcessive and the
opening angle difference between the targetvalue of throttle position sensor
(1st channel) and the actual value of throttle position sensor (1st channel) is
2.0 V or more)DMalfunction of throttle position sensor (1st channel)
DOpen or short circuit in the throttle position sensor
(1st channel) circuit or loose connector contact
DMalfunction of the throttle valve controller
NG
Replace the throttle valve controller.
OK
Check the trouble symptoms.
NG
Check the harness wires between the throttle position sensor
and the throttle valve controller, and between the throttle valve
control servo and the throttle valve controller.NG
Repair
NO
Adjust the throttle position sensor. (Refer to P.13A-220.)
MUT-
IISelf-Diag Code
Is code No.P0120 set?YESRefer to Code No.P0120, Throttle position sensor (1st
channel) system (Refer to P.13A-25).
NO
MUT-
IISelf-Diag Code
Is Code No.P1222 set?YESRefer to Code No.P1222, Throttle valvr control servo system
(Refer to P.13A-66.)
OK
Check the following connectors:
B-102, B-122, D-11NG
Repair
OK
Check the throttle valve control servo. (Refer to 13A-132.)NGReplace the throttle body assembly.


www.WorkshopManuals.co.uk


Purchased from www.WorkshopManuals.co.uk