2007 MITSUBISHI LANCER EVOLUTION relay

MANUAL TRANSMISSION - Troubleshooting MANUAL TRANSMISSION - Troubleshooting 22A-29
Code No.74 Proportional valve systemProbable cause
Code No.74 is output when open circuit or short circuit of the control circuit of
the proportional valve has occurred.DProportional valve fault
DHarness or connector fault
D4WD-ECU fault
OK
OK
OK
Replace the hydraulic unit.NG
NG
MUT-IIData List
DNo.11 Proportional valve current
OK:Refer to P.22A-35 (Data List Reference Table).
OK→Intermittent malfunction (Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions)
MUT-IIData List
DNo.11 proportional valve current
OK:Refer to P.22A-35 (Data List Reference Table).
NG→Replace the 4WD-ECU.
OK→Intermittent malfunction (Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions)
OK
Measure at proportional valve connector F-27.
DDisconnect the connector, and measure at the proportional
valve.
DResistance between terminals 2 and 3.
OK:Below 4.7Ω
Measure at proportional valve connector F-27.
DDisconnect the connector and measure at the harness
side.
DResistance between terminal 2 and body earth.
OK:2Ωor less
Check the harness between the proportional valve and
body earth.
DCheck for open circuit and damage of the earth line.
NG→Repair
Check the following connectors:F-27, F-24
NG→Repair
OK
Check the following connectors:
F-27, F-24, C-134, C-130, C-44
F-27, F-24, C-134, C-44
NG→Repair
OK
Check the harness between the 4WD-ECU and proportional
valve .
DCheck for open circuit, ground, and damage of the output
line.
NG→Repair
Code No.81 Electric pump relay systemProbable cause
Output when the coil circuit of the electric pump relay has open circuited or
short circuited.DElectric pump relay fault
DHarness or connector fault
D4WD-ECU fault
OK
OK
NG
Replace the electric pump relay.NG
NG
MUT-IIActuator Test
DNo.12 Electric pump drive
OK:The operating sound of the electric pump can be
heard.
OK→Intermittent malfunction (Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions)
OK
Check the harness between the electric pump relay and body
earth.
DCheck for open circuit and damage of the earth line.
NG→Repair
Check the following connector:B-139
NG→Repair
OK
Check the following connectors:
B-139, C-44
B-139, C-147, C-44
NG→Repair
Check the electric pump relay. (Refer to P.22A-57.)
Measure at electric pump relay connector B-139.
DDisconnect the connector and measure at the harness
side.
DResistance between terminal 1 and body earth
OK:2Ωor less
MUT-IIActuator Test
DNo.12 Electric pump drive
OK:Operating sounds of the electric pump can be heard.
NG→Replace the 4WD-ECU.
OK→Intermittent malfunction (Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions)
OK
Check the harness between the 4WD-ECU and electric pump
relay.
DCheck for open circuit, short circuit, and damage of the
power line.
NG→Repair

MANUAL TRANSMISSION - Troubleshooting 22A-30
Code No.82 Electric pump relay systemProbable cause
Code No.82 is output when the pressure sensor does not reach the specified
value even if the 4WD-ECU has output the electric pump motor drive command.DInsufficient fluid
DPressure sensor fault
DElectric pump relay fault
DHydraulic unit fault
DHarness or connector fault
D4WD-ECU fault
OK
OK
NG
NG
MUT-IIActuator Test
DNo.12 Electric pump drive
OK:Operating sounds of the electric pump can be heard.
OK→Intermittent malfunction (Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions)
Check the following connectors:
B-139, C-42, C-45, F-23
B-139, F-23
NG→Repair
OK
Check the following connector:B-139
NG→Repair
Check the harness between the fusible link No.7 and electric
pump relay.
DCheck for open, ground and damage of the power line.
NG→Repair
Measure at electric pump relay connector B-139.
DDisconnect the connector and measure at the harness
side.
DVoltage between terminal 5 and earth
OK:System voltage
MUT-IIActuator Test
DNo.12 Electric pump drive
OK:Operating sounds of the electric pump can be heard.
NG→Replace the 4WD-ECU.
OK→Intermittent malfunction (Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions)
YES
NOIs the fluid amount in the reservoir tank appropriate?
YES
Is the fluid leaking?
NO→Replenish the fluid.
Repair the leaking location.
YES
NO
MUT-IIDiagnosis Code
DAre Diagnosis Code Nos.45, 46, or 47 output?Check code Nos. 45, 46, and 47 pressure sensor system.
(Refer to P.22A-19, 20.)
YESCode No.81 Check the electric pump relay system (Refer to
P.22A-29.)
NO
MUT-IIDiagnosis Code
DIs the Diagnosis Code No.81 output?
OK
Check the harness between the electric pump relay and body
earth.
DCheck for open circuit and damage on earth line
NG→Repair
Replace the hydraulic unit.

MANUAL TRANSMISSION - Troubleshooting 22A-37
ACTUATOR TEST JUDGEMENT VALUE
Item
no.Check itemTest descriptionNormal state
01Bleeding Input current to the Proportional valve
according to the steering angle, and operate
the Proportional valve for five minutes.Make sure no air leaks from the bleeder
screw on the transfer.
02Bleeding Input current to the Proportional valve
according to the steering angle, and operate
the directional valve for five minutes.Make sure no air leaks from the bleeder
screw on the torque transfer differential.
03Check the oil vol-
umeOperate the directional valve to the left and
right for 20 seconds.Check that the oil volume of the reservoir
tank is appropriate.
04Electric pump
driveOperate the electric pump for 5 seconds.Operation sounds of the electric pump
can be heard.
05Check the opera-
tions of the ACDOperate the Proportional valve and
supply the maximum oil pressure to the multi
plate clutch.9Generate the tight corner braking
phenomenon.
06Check clutch op-
erations Operate the direction valve and supply the
maximum oil pressure to the left clutch.When the wheels are lifted, speed
difference will occur between the rear
left and right wheels.
07Check clutch op-
erations Operate the direction valve and supply the
maximum oil pressure to the right clutch.When the wheels are lifted, speed
difference will occur between the rear
left and right wheels.
08Control OFFTurn OFF the electric pump relay, and turn
OFF the control of the ACD and AYC.In actual driving, there is difference
between control ON and OFF.
(1) The actuator test can be executed only when all the following conditions are satisfied.
DAll wheel speed sensor inputs below 20 km/h
DNo system malfunction detected
DSteering angle is within±30 degrees from the neutral position
(2) When the actuator test corresponds to one of the following conditions, forced driving will be cleared.
DWhen any one of the wheel speed sensor input is detected to be above 20 km/h (excluding
Item No.08 “Control OFF”.)
DWhen system malfunction is detected (excluding diagnostic code No.82, 84, and 85)
DWhen the forced drive time is exceeded
DWhen the MUT-IIis removed
DWhen the Clear key of the MUT-IIis operated

MANUAL TRANSMISSION - Troubleshooting 22A-38
CHECK AT 4WD-ECU TERMINALS
NOTE:
1. *1indicates the eliminated terminal when only ACD is installed.
2. *2indicates the terminal added when only ACD is installed.
Termi-
nal no.
Check itemCheck conditionNormal state
1Proportional valve

Operate the Proportional
valveintheactuatortest
While executing the actuator testSystem voltage
valveintheactuatortest
(Item No.01). After completing the actuator test1 V or less
3*1Proportional valve

Operate the Proportional
valveintheactuatortest
While executing the actuator testSystem voltage
valveintheactuatortest
(Item No. 02). After completing the actuator test1 V or less
6Wheel speed sensor
FL
Vehicle is stopping1 V or lessp
Moving forward slowly0↔5 V flushing
7Wheel speed sensor
RR
Vehicle is stopping1 V or lessp
Moving forward slowly0↔5 V flushing
8Wheel speed sensor
RL
Vehicle is stopping1 V or lessp
Moving forward slowly0↔5 V flushing
9Wheel speed sensor
FR
Vehicle is stopping1 V or lessp
Moving forward slowly0↔5 V flushing
10Pressure sensor earthAny time1 V or less
11Lateral G sensorIgnition switch: ON
Vehicle horizontal state2.4 - 2.6 V
134WD-ECU power sup-
l
Ignition switch: OFF0Vpp
plyIgnition switch: ONSystem voltage
14*1Directional valve
Operate the directional
valve in theWhile executing the actuator testSystem voltage
valveinthe
actuator test (Item No.
07)After completing the actuator test1 V or less
15*1Directional valve

Operate the directional
valveintheactua
While executing the actuator testSystem voltage
valve intheactua-
tor test (Item No. 06)After completing the actuator test1 V or less
16Electric pump relay
l
When the electric pump motor is not operating0Vppy
power supplyWhile the electric pump motor is operatingSystem voltage
19*2Wheel speed sensor
earth Any time1 V or less
20*2Wheel speed sensor
earth Any time1 V or less
21*2Wheel speed sensor
earth Any time1 V or less
22*2Wheel speed sensor
earth Any time1 V or less
23Longitudinal G sensorIgnition switch: ON
Vehicle horizontal state2.4 - 2.6 V

MANUAL TRANSMISSION -Sensor, Switch and Relay or vehicles with ACD and AYC>22A-56
SENSOR, SWITCH AND RELAY VEHICLES WITH ACD AND AYC>
REMOVAL AND INSTALLATION
Caution
Before removing the steering wheel and air bag module assembly, be sure to refer to GROUP
52B Precautions in Servicing and Airbag Module Clock Spring.
1
3
2
4
5
Parking brake lever
Steering wheel sensor removal
steps
DSteering wheel and column cover
(Refer to GROUP 37A.)
1. Steering wheel sensor
G sensor removal steps
DFloor console (Refer to GROUP 52A.)
2. Longitudinal G sensor
3. Lateral G sensorElectric pump relay removal
4. Electric pump relay
ACD mode switch removal steps
DInstrument panel ornament (Refer to
GROUP 52A – Instrument Panel.)
5. ACD mode switch
NOTE
For details on the wheel speed sensor, refer to GROUP
35B.
REMOVAL SERVICE POINT
AA"STEERING WHEEL SENSOR REMOVAL
Remove the steering wheel sensor from the column switch.
Caution
Make sure no oil adheres to the steering wheel sensor
because a photocoupler is used.Steering wheel sensor

MANUAL TRANSMISSION -Sensor,SwitchandRelay vehicles with ACD and AYC>22A-57
INSPECTION
ELECTRIC PUMP RELAY CONTINUITY CHECK
1. Using a jumper wire, connect a battery (+) to terminal
13 of the electric pump relay and battery ( - ) to terminal
1.
2. While intermittently disconnecting the jumper wire at the
battery side, check for continuity between terminals 4
and 5 of the electric pump relay.
Jumper wireContinuity between No.4 - No.5
ConnectedContinuity
DisconnectedNo continuity
ACD MODE SWITCH CONTINUITY CHECK
ACD mode switch
terminalACD mode switchContinuity
No.1 - No.2ONContinuity
OFFNo continuity
No.3 - No.4-Continuity

REAR AXLE -Troubleshooting 27B-9
ERASING THE DIAGNOSIS CODES
Connect the MUT-IIto the 16-pin diagnosis connector and
erase the diagnosis code. (Refer to GROUP 00 – How to
Use Troubleshooting/Inspection Service Points.)
Caution
Turn the ignition switch to the LOCK (OFF) position before
connecting or disconnecting the MUT-II.
INSPECTION CHART FOR DIAGNOSIS CODE
Diagnosis
code No.Diagnosis itemsReference page
12Power supply voltage (valve power supply) systemopen- or short-circuitRefer to
GROUP22
13Failsafe relay system open- or short-circuit
GROUP22.
21FR wheel speed sensor systemopen- or short-circuit
22FL wheel speed sensor systemopen- or short-circuit
23RR wheel speed sensor systemopen- or short-circuit
24RL wheel speed sensor systemopen- or short-circuit
25Wrong-diameter tire
26Wheel speed sensor (faulty output signal)
31Steer sensor (ST-1, ST-2, ST-N) systemopen- or short-circuit
32Steer sensor (ST-N) systemshort-circuit
33fixed
34Steer sensor (ST-1, ST-2) systemshort-circuit or output
fixed
41TPS systemopen-circuit or ground
42short-circuit
45Pressure sensor systemopen-circuit or ground
46open earth
47abnormal power supply
51G sensor (longitudinal) systemopen- or short-circuit
52defective sensor
56G sensor (lateral) systemopen- or short-circuit
57defective sensor

REAR AXLE -Troubleshooting 27B-10
Diagnosis
code No.Reference page Diagnosis items
61Stop lamp switch systemopen-circuitRefer to
GROUP22
62ACD mode changeover switchstuck
GROUP22.
63Parking brake switch systemshort-circuit or not re-
turned
65ABS monitor systemopen-circuit or defective
ABS
71Proportioning valve systemopen- or short-circuit27B-11
72Directional control valve (right) systemopen- or short-circuit27B-12
73Directional control valve (left) systemopen- or short-circuit27B-13
74Proportioning valve systemopen- or short-circuitRefer to
GROUP22
81Electric pump relay systemopen- or short-circuit
GROUP22.
82electric pump malfunction
or pressure sensor defect
84AYC control error–
85ACD control errorRefer to
GROUP 22.
NOTE
Code No.84 is not a code number output due to malfunction, but a code number output when control
for the 4WD-ECU to protect the AYC is stopped in excessive driving. AYC control can be recovered
by turning the ignition switch ON to OFF to ON.