2007 MITSUBISHI LANCER EVOLUTION engine

MPI -Troubleshooting13A-24
Code No. P0130 Oxygen sensor (front) systemProbable cause
Inspection Range
DMore than 3 minutes passed after completion of start of engine
DThe engine coolant temperature is approximately more than 80_C.
DThe engine speed is more than 1,200 r/min.
DThe volumetric efficiency is 25% or more.
Evaluation Conditions
DWhen 5 V is applied to oxygen sensor (front) in engine-ECU while oxygen
sensor (front) output voltage is 0.2 V or less, the sensor output voltage is
4.5 V or more.DOxygen sensor (front) malfunction
DOxygen sensor (front) circuit disconnection,
short-circuit, or connector contact defect.
DEngine-ECU malfunction
OK
To the next pageOK
Check the harness between the
oxygen sensor (front) and
engine-ECU.
DCheck for damage of the output
wire.NG
Repair NG
OK
Check the following connector:
C-115Repair
(2) NGCheck the oxygen sensor (front).
(Refer to P.13A-134.)NGReplace the oxygen sensor (front).
OK
Check the harness between the
oxygen sensor (front) and
engine-ECU.
DCheck for damage of the earth
wire.NG
Repair
OK
Measure at the B-34 oxygen sensor
(front) connector.
DUsing the test harness
(MB998464), connect the
connector, and measure at the
pickup harness.
DEngine: After warm-up
(1) Voltage between terminal No. 2
and earth
OK:Less than 0.5 V
(2) Voltage between terminal No. 4
and the earth
DAt rapid deceleration from 4,000
r/min
OK:200 mV or less
DDuring rapid racing
OK:600 - 1,000 mV(1) NGCheck the following connector:
C-115NG
Repair
OK
Intermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
OK
MUT-IIData list
DNo. 11 Oxygen sensor (front)
(Refer to P.13A-102.)NGReplace engine-ECU.
OK
Check the harness between the
oxygen sensor (front) and
engine-ECU.
DCheck for disconnection and
damage of the earth wire.NG
Repair
OK
Measure at the B-34 oxygen sensor
(front) connector.
DDisconnect connector to measure
at the harness side
DResistance between terminal No.
2 and earth.
OK:Less than 2ΩNGCheck the following connector:
C-115NG
Repair
NG
Check the following connector:
B-34NG
Repair
MUT-IIData list
DNo. 11 Oxygen sensor (front)
(Refer to P.13A-102.)OKIntermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)

MPI -Troubleshooting13A-25
OK
Intermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
OK
MUT-IIData list
DNo. 11 Oxygen sensor (front)
(Refer to P.13A-102.)NGReplace the engine-ECU.
OK
Check the following connector:
C-115NG
Repair
OK
Check and repair the harness between
the oxygen sensor (front) and
engine-ECU.
DCheck for disconnection of the
output wire.
OK
Test at the C-115 engine-ECU
connector.
DMeasure the engine-ECU terminal
voltage.
DEngine: After warm-up
DVoltage between terminal No. 76
and earth.
DAt rapid deceleration from 4,000
r/min
OK:200 mV or less
DDuring rapid racing
OK:600 - 1,000 mVNGCheck the following connector:
C-115NG
Repair
From the previous page

MPI -Troubleshooting13A-26
Code No. P0135 Oxygen sensor heater (front) systemProbable cause
Inspection Range
DThe engine coolant temperature is approximately more than 20_C.
DThe oxygen sensor heater (front) is ON.
DThe engine speed is more than 50 r/min.
DA/C relay: OFF, radiator fan: OFF
DThe battery voltage is 11 - 16 V.
Evaluation Conditions
DThe oxygen sensor heater (front) current is less than 0.2 A or more than 3.5
A for 4 seconds.DOxygen sensor heater (front) malfunction
DOxygen sensor heater (front) circuit disconnection,
short-circuit, or connector contact defect
DEngine-ECU malfunction
OK
Intermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
OK
Check the trouble symptom.NGReplace the engine-ECU.
OK
Check the harness between the
oxygen sensor (front) and
engine-ECU.
DCheck for damage of the earth
wire.NG
repair
OK
Check the harness between the
oxygen sensor (front) and engine
control relay.
DCheck for damage of the power
cable.NG
Repair
OK
Check the following connector:
C-118NG
Repair
OK
Replace the engine-ECU.NG
OK
Check the harness between the
oxygen sensor (front) and
engine-ECU.
DCheck for disconnection and
short-circuit of the earth wire.Repair
OK
Measure at the C-118 engine-ECU
connector.
DMeasure the engine-ECU terminal
voltage.
DIgnition switch: ON
DVoltage between terminal No. 60
and earth.
OK:System voltageNGCheck the following connector:
C-118NG
Repair
OK
Check and repair the harness between
the oxygen sensor (front) and engine
control relay.
DCheck the power cable for
disconnection and short-circuit.
OK
Measure at the B-34 oxygen sensor
(front) connector.
DDisconnect the connector, and
measure at the harness.
DIgnition switch: ON
DVoltage between terminal No. 1
and earth
OK:System voltageNGCheck the following connector:
B-11XNG
Repair
OK
Measure at the B-34 oxygen sensor
(front) connector.
DDisconnect the connector, and
measure at the sensor.
DResistance between terminal No.
1 and terminal No. 3.
OK:4.5 - 8.0ΩNGReplace the oxygen sensor (front).
Check the following connector:
B-34NG
Repair

MPI -Troubleshooting13A-27
Code No. P0136 Oxygen sensor (rear) systemProbable cause
Inspection Range
DMore than 3 minutes passed after completion of start of engine
DThe engine coolant temperature is approximately more than 80_C.
DThe engine speed is more than 1,200 r/min.
DThe volumetric efficiency is 25% or more.
Evaluation Conditions
DWhen 5 V is applied to the oxygen sensor (rear), the output voltage is more
than 4.5 V.DOxygen sensor (rear) malfunction
DOxygen sensor (rear) circuit disconnection,
short-circuit, or connector contact defect.
DEngine-ECU malfunction
OK
To the next pageOK
Check the harness between the
oxygen sensor (rear) and engine-ECU.
DCheck for damage of the output
wire.NG
Repair NG
OK
Check the following connector:
C-115Repair
(2) NGCheck the oxygen sensor (rear).
(Refer to P.13A-135.)NGReplace the oxygen sensor (rear).
OK
Check the harness between the
oxygen sensor (rear) and engine-ECU.
DCheck for damage of the earth
wire.NG
Repair
OK
Measure at the D-22 oxygen sensor
(rear) connector.
DUsing the test harness
(MB998464), connect the
connector, and measure at the
pickup harness.
DEngine: After warm-up
(1) Voltage between terminal No. 2
and earth
OK:Less than 0.5 V
(2) Voltage between terminal No. 1
and the earth
DDuring rapid racing
OK:0 and 600 - 1,000 mV
alternate.(1) NGCheck the following connector:
C-115NG
Repair
OK
Intermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
OK
MUT-IIData list
DNo. 59 Oxygen sensor (rear)
(Refer to P.13A-105.)NGReplace engine-ECU.
OK
Check the harness between the
oxygen sensor (rear) and engine-ECU.
DCheck for disconnection and
damage of the earth wire.NG
Repair
OK
Measure at the D-22 oxygen sensor
(rear) connector.
DDisconnect connector to measure
at the harness side
DResistance between terminal No.
2 and earth.
OK:Less than 2ΩNGCheck the following connector:
C-115NG
Repair
NG
Check the following connector:
D-22NG
Repair
MUT-IIData list
DNo. 59 Oxygen sensor (rear)
(Refer to P.13A-105.)OKIntermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)

MPI -Troubleshooting13A-28
OK
Intermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
OK
MUT-IIData list
DNo. 59 Oxygen sensor (rear)
(Refer to P.13A-105.)NGReplace the engine-ECU.
OK
Check the following connector:
C-115NG
Repair
OK
Check and repair the harness between
the oxygen sensor (rear) and
engine-ECU.
DCheck for disconnection of the
output wire.
OK
Test at the C-115 engine-ECU
connector.
DMeasure the engine-ECU terminal
voltage.
DEngine: After warm-up
DVoltage between terminal No. 75
and earth.
DDuring rapid racing
OK:0 and 600 - 1,000 mV
alternate.NGCheck the following connector:
C-115NG
Repair
From the previous page

MPI -Troubleshooting13A-29
Code No. P0141 Oxygen sensor heater (rear) systemProbable cause
Inspection Range
DThe engine coolant water temperature is approximately more than 20_C.
DThe oxygen sensor heater (rear) is ON.
DThe engine speed is more than 50 r/min.
DA/C relay: OFF, radiator fan: OFF
DThe battery voltage is 11 - 16 V.
Evaluation Conditions
DThe oxygen sensor heater (rear) current is less than 0.2 A or more than 3.5
A for 4 seconds.DOxygen sensor heater (rear) malfunction
DOxygen sensor heater (rear) circuit disconnection,
short-circuit, or connector contact defect
DEngine-ECU malfunction
OK
Intermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
OK
Check the trouble symptom.NGReplace the engine-ECU.
OK
Check the harness between the
oxygen sensor (rear) and engine-ECU.
DCheck for damage of the earth
wire.NG
Repair
OK
Check the harness between the
oxygen sensor (rear) and engine
control relay.
DCheck for damage of the power
cable.NG
Repair
OK
Check the following connector:
B-11X, C-108NG
Repair
OK
Replace the engine-ECU.NG
OK
Check the harness between the
oxygen sensor (rear) and engine-ECU.
DCheck for disconnection and
short-circuit of the earth wire.Repair
OK
Measure at the C-118 engine-ECU
connector.
DMeasure the engine-ECU terminal
voltage.
DIgnition switch: ON
DVoltage between terminal No. 54
and earth.
OK:System voltageNGCheck the following connector:
C-118NG
Repair
OK
Check and repair the harness between
the oxygen sensor (rear) and engine
control relay.
DCheck the power cable for
disconnection and short-circuit.
OK
Measure at the D-22 oxygen sensor
(rear) connector.
DDisconnect the connector, and
measure at the harness.
DIgnition switch: ON
DVoltage between terminal No. 3
and earth
OK:System voltageNGCheck the following connector:
B-11XNG
Repair
OK
Measure at the D-22 oxygen sensor
(rear) connector.
DDisconnect the connector, and
measure at the sensor.
DResistance between terminal No.
3 and terminal No. 4.
OK:11 - 1 8ΩNGReplace the oxygen sensor (rear).
Check the following connector:
D-22NG
Repair

MPI -Troubleshooting13A-30
Code No. P0201 No. 1 injector systemProbable cause
Inspection Range
DThe engine speed is 50 - 1,000 r/min.
DThe throttle position sensor output voltage is 1.15 V or less.
DMUT-IIforced drive (actuator test) is not being carried out.
Evaluation Conditions
DSurge voltage at injector coil is not detected for 2 seconds.DNo. 1 injector malfunction
DNo. 1 injector circuit disconnection, short-circuit, or
connector contact defect
DEngine-ECU malfunction
OKIntermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
OK
Measure the signal waveform at the
C-126 engine-ECU connector (using
an analyzer).
DEngine: Idling
DVoltage between terminal No. 1 and
earth
OK:The waveform shown on
P.13A-119 (Inspection Proce-
dure Using Analyzer) should
be output.NGReplace the engine-ECU.
OK
Check the harness between the No. 1
injector and engine-ECU.
DCheck for disconnection,
short-circuit and damage of the
output cable.NG
Repair
OK
Check the following connector:
C-126NG
Repair
OK
Check the harness between the resis-
tor (for injector) and engine control
relay.
DCheck for damage of the power
cable.NG
Repair
OK
Check the harness between the No. 1
injector and resistor (for injector).
DCheck for damage of the power
cable.NG
Repair
OK
Check and repair the harness between
the resistor (for injector) and engine
control relay.
DCheck for disconnection and
short-circuit of the power cable.NG
OK
Check the harness between the No. 1
injector and resistor (for injector).
DCheck for disconnection and
short-circuit of the power cable.Repair
OK
Check the resistor. (Refer to
P.13A-138.)
OK
Measure at the B-27 No. 1 injector
connector.
DDisconnect the connector to
measure at the harness side.
DIgnition switch: ON
DVoltage between terminal No. 1 and
earth
OK:System voltageNGCheck the following connectors:
B-11X, B-138, C-108NG
Repair
OK
Measure at the B-27 No. 1 injector
connector.
DDisconnect the connector to
measure at the injector side.
DResistance between terminal No. 1
and terminal No. 2
OK:2-3ΩNGReplace the No. 1 injector.
NG
Check the following connector:
B-27NG
Repair
MUT-IIActuator test
DNo. 01: No. 1 injector
OK:The idling state changes.OKIntermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)

MPI -Troubleshooting13A-31
Code No. P0202 No. 2 injector systemProbable cause
Inspection Range
DThe engine speed is 50 - 1,000 r/min.
DThe throttle position sensor output voltage is 1.15 V or less.
DMUT-IIforced drive (actuator test) is not being carried out.
Evaluation Conditions
DSurge voltage at injector coil is not detected for 2 seconds.DNo. 2 injector malfunction
DNo. 2 injector circuit disconnection, short-circuit, or
connector contact defect
DEngine-ECU malfunction
OKIntermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
OK
Measure the signal waveform at the
C-126 engine-ECU connector (using
an analyzer).
DEngine: Idling
DVoltage between terminal No. 1 and
earth
OK:The waveform shown on
P.13A-119 (Inspection Proce-
dure Using Analyzer) should
be output.NGReplace the engine-ECU.
OK
Check the harness between the No. 2
injector and engine-ECU.
DCheck for disconnection,
short-circuit and damage of the
output cable.NG
Repair
OK
Check the following connector:
C-126NG
Repair
OK
Check the harness between the resis-
tor (for injector) and engine control
relay.
DCheck for damage of the power
cable.NG
Repair
OK
Check and repair the harness between
the resistor (for injector) and engine
control relay.
DCheck for disconnection and
short-circuit of the power cable.NG
OK
Check the harness between the No. 2
injector and resistor (for injector).
DCheck for disconnection and
short-circuit of the power cable.Repair NG
OK
Check the resistor. (Refer to
P.13A-138.)Repair
OK
Check the harness between the No. 2
injector and resistor (for injector).
DCheck for damage of the power
cable.NG
Repair
OK
Measure at the B-26 No. 2 injector
connector.
DDisconnect the connector to
measure at the harness side.
DIgnition switch: ON
DVoltage between terminal No. 1 and
earth
OK:System voltageNGCheck the following connectors:
B-11X, B-138, C-108NG
Repair
OK
Measure at the B-26 No. 2 injector
connector.
DDisconnect the connector to
measure at the injector side.
DResistance between terminal No. 1
and terminal No. 2
OK:2-3ΩNGReplace the No. 2 injector.
NG
Check the following connector:
B-26NG
Repair
MUT-IIActuator test
DNo. 02: No. 2 injector
OK:The idling state changes.OKIntermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)