2007 MITSUBISHI LANCER EVOLUTION radiator

MPI -Troubleshooting13A-49
Code No. P1500 Alternator FR terminal systemProbable cause
Inspection Range
DEngine speed: More than 50 r/min
Evaluation Conditions
DThe input voltage from the alternator FR terminal is between 4.8 V and 5.2 V
or is the battery voltage for 20 seconds.DOpen circuit in the alternator FR terminal circuit
DMalfunction of engine-ECU
OK
Intermittent Malfunction
(Refer to GROUP 00 - Points to
Note for Intermittent Malfunction.)
OK
Check the trouble symptoms.NGReplace the engine-ECU.
OK
Intermittent Malfunction
(Refer to GROUP 00 - Points to
Note for Intermittent Malfunction.)
OK
Check the trouble symptoms.NGReplace the alternator. NG
OK
Check the harness between the middle
connector and engine-ECU.
DCheck for damage of the output
wire.Repair NG
OK
Check the harness between the
alternator and middle connector.
DCheck for damage of the output
wire.Repair
OK
Measure at the B-14 middle
connector.
DUsing the test harness
(MB991658), connect the
connector and measure at the
pickup harness.
DEngine: Idling (After warm-up)
DRadiator fan: OFF
DVoltage between terminal No. 5
and earth.
OK:The voltage drops when
the headlamp is turned
from OFF to ON.NGCheck the following connector:
B-22NG
Repair
OK
Replace the alternator.NG
OK
Check the harness between the
alternator and middle connector.
DCheck for short circuit of the
output wire.Repair
OK
Measure at the B-14 middle
connector.
DUsing the test harness
(MB991658), connect the
connector and measure at the
pickup harness.
DIgnition switch: ON
DVoltage between terminal No.5
and earth.
OK:5-6VNGCheck the following connector:
B-22NG
Repair
OK
Intermittent Malfunction
(Refer to GROUP 00 - Points to
Note for Intermittent Malfunction.)
OK
Check the trouble symptoms.NGReplace the engine-ECU. NG
OK
Check the harness between the
middle connector and engine-ECU.
DCheck for short circuit of the
output wire.Repair
OK
Measure at the B-14 middle
connector.
DDisconnect the connector to
measure at the female connector
side.
DIgnition switch: ON
DVoltage between terminal No.5
and earth.
OK:4.9 - 5.1 VNGCheck the following connector:
C-122NG
Repair
Check the following connector:
B-14NG
Repair

MPI -Troubleshooting13A-52
INSPECTION CHART FOR TROUBLE SYMPTOMS
Inspection
procedureCheck itemsReference page
1Communication between MUT-IIand entire system is not possible.13A-54
2Only communication between MUT-IIand engine-ECU is not possible.13A-55
3Engine warning lamp does not illuminate immediately after ignition switch is set to ON position.13A-56
4Engine warning lamp stays illuminated and does not turn OFF.13A-57
5Starting disabled (Starter does not rotate.)13A-58
6Starting disabled (Starter rotates but initial combustion does not occur.)13A-59
7Starting disabled (Initial combustion occurs but is incomplete.)13A-61
Improper starting (Starting time is long.)
8Unstable idling (Rough idling, hunting)13A-63
Inappropriate idling speed (High or low idling speed)
Engine stalls (Die out) during idling
9Engine stalls when starting travel. (Pass out)13A-66
10Engine stalls during deceleration13A-67
11Pulsation (Hesitation, sag)13A-68
Poor acceleration
Stumbling
Surging
12Shock during acceleration13A-70
13Shock during deceleration13A-71
14Knocking13A-72
15Deviation of ignition interval13A-73
16Run on (Dieseling)13A-74
17Abnormal odor, white smoke, black smoke, high CO or HC concentration when idling13A-75
18Battery dies13A-77
19Overheating13A-79
20Abnormal radiator fan motor rotation13A-80
21A/C ineffective13A-81
22Engine-ECU power supply, engine control relay, ignition switch-IG1 system13A-82
23Fuel pump system13A-85
24Radiator fan control relay system13A-87
25Condenser fan relay system13A-89
26A/C switch system13A-92
27A/C compressor relay system13A-93
28A/C load signal system13A-95
29Secondary air control solenoid valve system13A-96
30Intercooler water spray circuit system13A-97
31Intercooler water spray lamp system13A-99
32Ignition coil (integrated power transistor) system13A-100

MPI -Troubleshooting13A-64
OK
To the next page
OK
Measure at the C-39 engine-ECU connector.
DMeasure the engine-ECU terminal voltage.
DEngine: Idling
DA/C switch: ON (A/C compressor driven state)
DVoltage between terminal No .24 and earth
(A/C setting temperature: Minimum temperature)
(Air volume: Maximum)
OK:1 V or less
(A/C setting temperature: indoor temperature)
(Air volume: Minimum)
OK:System voltageNGCheck the Inspection Procedure 28: A/C load signal system.
(Refer to P.13A-95.)
NG
Replace the alternator.
OK
Check the trouble symptoms.OKIntermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.) NG
OK
Check the harness between the
alternator and engine-ECU.
DCheck for disconnection,
short-circuit and damage of the
output cable.Repair
OK
Measure at the C-40 engine-ECU
connector.
DMeasure the engine-ECU terminal
voltage.
DEngine: Idling (after warm-up)
DRadiator fan: Stopped
DVoltage between terminal No. 33
and earth
OK:Voltage rises 0.2 to 3.5 V when
headlamp is turned OFF and
ON.
DVoltage between terminal No. 41
and earth
OK:Voltage drops whenheadlamp
is turned OFF and ON.NGCheck the following connectors:
C-40, B-21, B-03NG
Repair
OK
Check the harness between the
engine-ECU and earth joint.
DCheck for disconnection and
damage of the earth cable.
(2) NGCheck the following connector:
C-39NG
Repair
NG
Replace the engine-ECU.
OK
Check the trouble symptoms.OKIntermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.) NG
OK
Check the harness between the
engine-ECU and battery.
DCheck for disconnection,
short-circuit and damage of the
power cable.Repair
OK
Measure at the C-115 and C-126
engine-ECU connectors.
DMeasure the engine-ECU terminal
voltage.
(1) Voltage between terminal No. 80
and earth
OK:System voltage
(2) Voltage between terminal No. 13
and earth
Voltage between terminal No. 26
and earth
(Ignition switch: ON)
OK:0.5 V or less(1) NGCheck the following connectors:
C-115, C-129, C-05, C-135NG
Repair
OK
MUT-IIData list
DNo. 59: Oxygen sensor (rear)
(Refer to P.13A-105.)NGCheck the Code No. P0136: Oxygen sensor (rear) system.
(Refer to P.13A-27.)
From the previous page

MPI -Troubleshooting13A-78
NG
Replace the engine-ECU.
OK
Check the trouble symptoms.OKIntermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
OK
Measure at the C-122 engine-ECU
connector.
DMeasure the engine-ECU terminal
voltage.
DEngine: Idling (after warm-up)
DRadiator fan: Stopped
DVoltage between terminal No. 33
and earth
OK:Voltage rises 0.2 to 3.5 V
when headlamp is turned
OFF and ON.NGCheck the charging device.
(Refer to GROUP 16 - Charging
Device.)
OK
Measure at the C-122 engine-ECU
connector.
DDisconnect the connector to
measure at the harness side.
DIgnition switch: ON
DVoltage between terminal No. 33
and earth
OK:System voltageNGCheck and repair the harness between
the alternator intermediate connector
and engine-ECU.
DCheck for short-circuit of output
cable.
From the previous page

MPI -Troubleshooting13A-79
Inspection Procedure 19
Overheating
Probable cause
Causes shown on right are suspected.DEngine coolant insufficient or deteriorated
DFan controller malfunction
DEngine coolant temperature sensor malfunction
DThermostat malfunction
DWater pump malfunction
DCondenser fan relay malfunction
DRadiator core malfunction
DEngine-ECU malfunction
NO
NG
Replace or replenish the engine coolant.
OK
Replace the radiator core.
OK
Check the water pump. (Refer to GROUP 14 - Water pump.)NGReplace the water pump.
OK
Check the thermostat. (Refer to GROUP 14 - Thermostat.)NGReplace the thermostat.
OK
MUT-IIData list
DNo. 21: Engine coolant temperaure sensor
OK:Approximately the same as the ambient temperature
when cooled.
Between 80 - 120_C when hot.NGCheck the Code No. P0115: Engine coolant temperature
sensor system. (Refer to P.13A-19.)
MUT-IIData list
21 Engine coolant temperature sensor (Refer to P.13A-102.)
OK
MUT-IIActuator Test
DNo. 37: Condenser fan (HI)
DNo. 38: Condenser fan (LOW)
DIgnition switch: ON
OK:Condenser fan rotates (low speed).
OK:Condenser fan rotates (high speed).NGCheck the Inspection Procedure 25: Condenser fan control
relay system. (Refer to P.13A-89.)
MUT-IIActuator Test
DNo. 21: Fan controller
DIgnition switch: ON
OK:Radiator fan rotates.NGCheck the Inspection Procedure 24: Radiator fan control relay
system. (Refer to P.13A-87.)
OK
Check the engine coolant.
(Refer to GROUP 14 - On-vehicle Service.)

If the engine coolant level is low, check whether the engine
coolant has leaked, and repair if required.
MUT-IISelf-Diag Code
Is a diagnosis code output?YESINSPECTION CHART FOR DIAGNOSIS CODE (Refer to
P.13A-12.)

MPI -Troubleshooting13A-80
Inspection Procedure 20
Abnormal radiator fan motor rotation
Probable cause
Causes shown on right are suspected.DFan controller malfunction
DEngine-ECU malfunction
Intermittent malfunction (Refer to
GROUP 00 - Points to Note for
Intermittent Malfunctions.)OK
Replace the engine-ECU.
OK
Check the radiator fan motor drive.
DDisconnect the C-126
engine-ECU connector.
DShort-circuit terminal No. 21 with
the earth.
DIgnition switch: ON
OK:Radiator fan motor stops.NGCheck the trouble symptoms.
Check the following connector:
C-126NG
Repair
OK
NG
Measure at the C-126 engine-ECU connector.
DDisconnect the connector to measure at the harness side.
DIgnition switch: ON
DVoltage between terminal No. 21 and earth
OK:4.9 - 5.1VReplace the fan controller. NG
OK
NG
Repair
NGRepair
Replace the fan controller.
Check the following connectors:A-13, A-21
Check the harness between the fan controller and engine-ECU.
DCheck for disconnection of the output cable.OK
OK

MPI -Troubleshooting13A-87
Inspection Procedure 24
Radiator fan control relay system
Probable cause
When the engine control relay turns ON, the radiator fan control relay turns ON
simultaneously, and power is supplied to the fan controller.
The radiator fan motor is driven when the fan motor drive signal is input to the
fan controller from the engine-ECU.DRadiator fan control relay malfunction
DFan controller malfunction
DRadiator fan motor malfunction
DEngine-ECU malfunction
OK
(1) NG
OK
DCheck the radiator fan control relay. (Refer to GROUP 14
- On-vehicle Service.)NGReplace the radiator fan control relay.
Check the following connector:A-09XNG
Repair
OK
OK
(2) NGCheck the following connectors:
C-136 , A-13
, C-108, B-11XNG
OK
Check and repair the harness
between the radiator fan control relay
and body earth.
DCheck for disconnection and
damage of the earth cable.
Repair
OK
Check the following connector:A-21
Check and repair the harness
between the radiator fan control relay
and engine control relay.
DCheck for disconnection and
short-circuit of the power cable.
(3) NGCheck and repair the harness
between the battery and radiator fan
control relay.
DCheck for disconnection and
short-circuit of the power cable.
Measure at the A-09X radiator fan
control relay connector.
DRemove the relay, and measure
at the connector side.
(1) Resistance between terminal No.
3 and earth
OK:2Ωor less
(2) Voltage between terminal No. 1
and earth
(Ignition switch: ON)
OK:System voltage
(3) Voltage between terminal No. 4
and earth
OK:System voltage
NG
Repair
OK
Measure at the A-21 fan controller
connector.
DDisconnect the connector to
measure at the harness side.
DIgnition switch: ON
DVoltage between terminal No. 3
and earth
OK:System voltage
To the next pageNG
OK
Check the harness between the
radiator fan control relay and fan
controller.
DCheck for disconnection and
short-circuit of the output cable.NG
Repair
OK
Check the following connectors:
C-136 , A-13
, C-108, B-11XNG
Repair
OK
OK
Check the harness between the
radiator fan control relay and engine
control relay.
DCheck for damage of the power
cable.NG
Repair
Check and repair the harness
between the radiator fan control relay
and body earth.
DCheck for damage of the earth
cable.

MPI -Troubleshooting13A-88
NGRepair
NG
Repair NG
From the previous page
OK
OK
Replace the engine-ECU.
NG
MUT-IIActuator Test
DNo. 21: Fan controller
DIgnition switch: ON
OK:Radiator fan motor rotates.
NG
Check the radiator fan motor drive.
DDisconnect the C-126
engine-ECU connector.
DIgnition switch: ON
OK:Radiator fan motor rotates
at a high speed.OK
OK
Check the harness between the
battery and radiator fan control relay.
DCheck for damage of the power
cable.RepairMeasure at the C-126 engine-ECU
connector.
DDisconnect the connector to
measure at the harness side.
DIgnition switch: ON
DVoltage between terminal No. 21
and earth
OK:4.9 - 5.1 VOK
OK
Check the harness between the
radiator fan control relay and fan
controller.
DCheck for damage of the output
cable.
Replace the radiator fan motor and
fan controller assembly.NG
NG
OK
Check the following connector:
C-136 ,
A-13
OK
Replace the radiator fan motor and
fan controller assembly.
Check the harness between the fan
controller and engine-ECU.
DCheck for short-circuit of the
output cable.Repair NG
OK
Check the following connector:C-126
Repair
Intermittent malfunction (Refer to
GROUP 00 - Points to Note for
Intermittent Malfunctions.)