ECU MITSUBISHI LANCER EVOLUTION VIII 2004 User Guide

INTAKE, EXHAUST – AIR CLEANER153
Air Cleaner
Removal and Fitting
Note
The parts marked with a symbol are plastic components which contain recycled paper. Please note the following:
•When fixing or removing, or after fitting parts, be careful not to knock or apply force to these components.
• When assembling, fix the air cleaner body ASSY securely to the air cleaner cover using the clamp on the body.
Remarks
Parts marked with a
symbol use plastic that may contain recycled paper, so when scrapped are burnable.
Removal procedure
1.Battery
2. Air duct
3. Air flow sensor connector4.Air cleaner assembly
5.Air flow sensor
6. Gasket
7. Air cleaner cover8.Air cleaner element
9.Air cleaner body assembly
10. Vacuum hose• Air pipe E, air hose D, air bypass valve
assembly, air bypass hose.
• Oil level gauge assembly11.Air intake hose
12.Wastegate solenoid valve connector
13. Vacuum hose connection
14. Wastegate solenoid valve assembly15.Air cleaner bracket

MANUAL TRANSMISSION TROUBLESHOOTING222
2. Check procedures by diagnosis code
Remarks
In cases where other diagnosis codes are output, please refer to the relevant item.
Code No.12 Power supply voltage (valve power supply) systemAssumed cause of concern
If the 4WDECU power supply voltage drops below 9V or rises
above 18V, Code No.12 is output, indicating either a broken wire in
the power supply circuit, a short, or a drop in the battery voltage.• battery malfunction
• harness, connector malfunction
• 4WDECU malfunction
Battery inspection
NG > replace
MUTII/III Service data
• No.10 Battery voltage
OK:battery voltage
OK > Intermittent malfunction
Measurement at C38 4WDECU connector
•ECU terminal voltage measurement
• Ignition switch: ON
OK:battery voltage
Connector check: C38
NG > repair
MUTII/III Service data
•No.10 battery voltage
OK:battery voltage
NG > replace 4WDECU
OK > intermittent malfunction
Connector check:C38, C133, C212, C210
NG > repair
Check harness between ignition switch – 4WDECU
• Check to see if power supply wire broken, short, or
damage
NG > repair
OK
OK
OK
OK
NG
NG

MANUAL TRANSMISSION TROUBLESHOOTING223
Vehicle speed sensor fitting check
NG > repair
MUTII/III Service Data
• No.01 Vehicle speed sensor
•No.02 Vehicle speed sensor
• No.03 Vehicle speed sensor
OK:Speed shown on speedometer and MUTII/III agree
OK > Intermittent malfunction
Measurement at C38 4WDECU connector
• Undo connector and take measurement on harness
side
(1) Resistance between 9 – 22 (vehicle speed sensor )
(2) Resistance between 6 19 (vehicle speed sensor )
(3) Resistance between 7 20 (vehicle speed sensor )
(4) Resistance between 8 – 21 (vehicle speed sensor )
OK:1.2 – 1.6 kΩ
To next pageVehicle wheel speed sensor check
(Refer to Group 35B – Vehicle wheel speed sensor)
*1
NG > Replace
Connector checks:C38, A05, A31, D11, D05,
D12, C131, C20, C115, C34
NG > Repair
Harness check between 4WDECU – each vehicle
wheel speed sensor
MUTII/III Service data
•No.1 Vehicle speed sensor
•No.2 Vehicle speed sensor
• No.3 Vehicle speed sensor
• No.4 Vehicle speed sensor
OK: Speed shown on speedometer and MUTII/III agreeNG > Replace 4WDECU
OK > Intermittent malfunction
Code No.21 Vehicle wheel speed sensor systems
Code No.22 Vehicle wheel speed sensor systems
Code No.23 Vehicle wheel speed sensor systems
Code No.24 Vehicle wheel speed sensor systemsAssumed cause of concern
When one of the vehicle wheel speed sensors detects a
vehicle speed of 15kph or more, and when even one of the
remaining 3 sensors cannot detect vehicle speed, the
diagnosis code for wheel speed sensor broken wire or short is
output.• Wheel speed sensor malfunction
• Rotor malfunction
•Wheel bearing malfunction
• Harness, connector malfunction
• 4WDECU malfunction

Remarks*1: refer to ’005 Lancer Sedia Service Manual (No.1036K00)*2: refer to ’011 Lancer Evolution VII Service Manual (No.1036K02)
OK
OK
OK
OK
OK
NG
NG

MANUAL TRANSMISSION TROUBLESHOOTING224
From previous page
Check vehicle wheel speed sensor output voltage (ref.
p.2241)
*2
Check connector: C38
NG > Repair
MUTII/III Service data
• No.1 Vehicle speed sensor
•No.2 Vehicle speed sensor
• No.3 Vehicle speed sensor
• No.4 Vehicle speed sensor
OK:Speed shown on speedometer and MUTII/III
agree
NG > Replace 4WDECU
OK > Intermittent malfunctionVehicle speed sensor and rotor check
(Refer to Group 35B – Vehicle wheel speed sensor)
*1
NG > Repair
Wheel bearing check (Refer to Group 26 – Vehicle
Servicing, Group 27B – Rear Hub Assembly)
*2
NG > Repair
NG
OK
OK
OK

Vehicle speed sensor fitting check
NG > repair
MUTII/III Service Data
• No.01 Vehicle speed sensor
• No.02 Vehicle speed sensor
• No.03 Vehicle speed sensor
• No.04 Vehicle speed sensor
OK:Speed shown on speedometer and MUTII/III agree
OK > Intermittent malfunction
Measurement at C38 4WDECU connector
•Undo connector and take measurement on harness
side
(1) Resistance between 9 – 22 (vehicle speed sensor
)
(2) Resistance between 6 19 (vehicle speed sensor
)
(3) Resistance between 7 20 (vehicle speed sensor
)
(4) Resistance between 8 – 21 (vehicle speed sensor
)
OK:1.2 – 1.6kΩ
Check vehicle wheel speed sensor output voltage (ref.
p.2241)
*2
Check connector:C38
NG > repair
MUTII/III Service data
• No.1 Vehicle speed sensor
• No.2 Vehicle speed sensor
• No.3 Vehicle speed sensor
OK:Speed shown on speedometer and MUTII/III
agree
NG > Replace 4WDECU
OK > Intermittent malfunctionVehicle wheel speed sensor
(Refer to Group 35B – Vehicle wheel speed sensor)
*1
NG > Repair
Connector checks:C38, A05, A31, D11, D05,
D12, C131, C20, C115, C34
NG: Repair
Harness check between 4WDECU – each vehicle
wheel speed sensor
• Check output wire for broken wire, earthing, short
• Check earth wire to see if broken or damaged
NG:repair
MUTII/III Service data
•No.1 Vehicle speed sensor
•No.2 Vehicle speed sensor
• No.3 Vehicle speed sensor
• No.4 Vehicle speed sensor
OK:Speed shown on speedometer and MUTII/III
agree
NG > Replace 4WDECU
OK > Intermittent malfunction
Vehicle wheel speed sensor and rotor check
(Refer to Group 35B – Vehicle Wheel Speed Sensor)
*1
NG > Repair
Wheel bearing check (Refer to Group 26 – Vehicle
Servicing, Group 27B – Rear Hub Assembly)
*2
NG > Repair
MANUAL TRANSMISSION TROUBLESHOOTING225
Code No.25 Abnormal tyre diameterAssumed cause of concern
Abnormal tyre Code No. 25 is output in cases where, when
the steering wheel is in a central position, and vehicle speed
is 20kph or more, there is a discrepancy between one of the
vehicle wheel speed sensors and the average of the 4 wheel
speed sensors, in that it is outside the specified range.However, the warning lamp does not come on.• Tyre malfunction
•Vehicle speed sensor malfunction
• Rotor malfunction
• Wheel bearing malfunction
• Harness, connector malfunction

Remarks*1: refer to ’005 Lancer Sedia Service Manual (No.1036K00)*2: refer to ’011 Lancer Evolution VII Service Manual (No.1036K02)
OK
OK
OK
OK NG
NG
OK
NG
OK
OK
OK

MANUAL TRANSMISSION TROUBLESHOOTING226
Vehicle speed sensor fitting check
NG > repair
MUTII/III Service Data
• No.01 Vehicle speed sensor
• No.02 Vehicle speed sensor
•No.03 Vehicle speed sensor
•No.04 Vehicle speed sensor
OK:Speed shown on speedometer and MUTII/III agree
OK > Intermittent malfunction
Measurement at C38 4WDECU connector
• Undo connector and take measurement on harness
side
(1) Resistance between 9 – 22 (vehicle speed sensor
)
(2) Resistance between 6 19 (vehicle speed sensor
)
(3) Resistance between 7 20 (vehicle speed sensor
)
(4) Resistance between 8 – 21 (vehicle speed sensor
)
OK:1.2 – 1.6kΩ
Check vehicle wheel speed sensor output voltage (ref.
p.2241)
*2
Check connector:C38
NG > repair
MUTII/III Service data
• No.1 Vehicle speed sensor
• No.2 Vehicle speed sensor
• No.3 Vehicle speed sensor
OK:Speed shown on speedometer and MUTII/III
agree
NG > Replace 4WDECU
OK > Intermittent malfunctionVehicle wheel speed sensor
(Refer to Group 35B – Vehicle wheel speed sensor)
*1
NG > Repair
Connector checks:C38, A05, A31, D11, D05,
D12, C131, C20, C115, C34
NG > Repair
Harness check between 4WDECU – each vehicle
wheel speed sensor
• Check output wire for broken wire, earthing, short
• Check earth wire to see if broken or damaged
NG > repair
MUTII/III Service data
•No.1 Vehicle speed sensor
• No.2 Vehicle speed sensor
• No.3 Vehicle speed sensor
• No.4 Vehicle speed sensor
OK:Speed shown on speedometer and MUTII/III
agree
NG > Replace 4WDECU
OK > Intermittent malfunction
Vehicle wheel speed sensor and rotor check
(Refer to Group 35B – Vehicle Wheel Speed Sensor)
*1
NG > Repair
Wheel bearing check (Refer to Group 26 – Vehicle
Servicing, Group 27B – Rear Hub Assembly)
*2
NG > Repair
Code No.26 Vehicle wheel speed sensor system (output
signal abnormal)Assumed cause of concern
Abnormal vehicle wheel speed sensor Code No. 26 is output
in cases where, when the vehicle speed is 20kph or more,
one of the vehicle wheel speed sensors is outside the
specified range. However, the warning lamp does come on.•Tyre malfunction
• Vehicle speed sensor malfunction
•Rotor malfunction
• Wheel bearing malfunction
•Harness, connector malfunction
• 4WDECU malfunction

Remarks*1: refer to ’005 Lancer Sedia Service Manual (No.1036K00)*2: refer to ’011 Lancer Evolution VII Service Manual (No.1036K02)
OK
OK
OK
OK NG
NG
OK
NG
OK
OK
OK

MANUAL TRANSMISSION TROUBLESHOOTING227
MUTII/III Diagnosis code
• Has MPI diagnosis code No.P0120 been output?
MUTII/III Service Data
• No.13 TPS voltage
OK:P.2232 (Refer to Service Data List)*2
OK > Intermittent malfunction
Measurement at C37 4WDECU connector
• Measure ECU terminal voltage
• Ignition switch: ON
• Voltage between 39 – earth
(1)Throttle pedal fully open
OK:535 – 735 mV
(2)Throttle pedal fully open
OK:4500 – 5500 mV
Check connector:C37
NG > Repair
MUTII/III Service data
• No.13 TPS voltage
OK:P.2232 (Refer to Service Data List)*2
NG > replace 4WDECU
OK > intermittent malfunctionRefer to Group 13D – Troubleshooting
*2
TPS adjustment (Refer to Group 13D – Vehicle
Servicing)*2
Connector check:C37, B06, C23
NG > repair
Check harness between TPS – 4WDECU
• Check to see if output wire is broken, short, or
damaged
NG > repair
Code No.41,42 TPS systemAssumed cause of concern
If, when idling, TPS output is 0.2V or less, code No.41 is
output, indicating that output is too low.
If, at 10kph or less, TPS output is 4.8V or more for a period
of 2 minutes or more, code No.42 is output, indicating output
is too high.• TPS malfunction
•Harness, connector malfunction
• 4WDECU malfunction
Remarks*2: refer to ’011 Lancer Evolution VII Service Manual (No.1036K02)
NO
NG
OK
OK
OK
OKYES
NG

MANUAL TRANSMISSION TROUBLESHOOTING228
Code No.45 Pressure sensor system (broken wire or earth)Assumed cause of concern
Code No.45 is output when output signal from pressure sensor
is 0.2V or less.• Harness, connector malfunction
• Pressure sensor malfunction
• 4WDECU malfunction
Remarks*2: refer to ’011 Lancer Evolution VII Service Manual (No.1036K02)
MUTII/III Service data
• No.18 pressure sensor
OK:P.2232 (Refer to Service Data List)*2
OK > Intermittent malfunction
Measurement at C37 4WDECU connector
•Measure ECU terminal voltage
•Ignition switch: ON
• Voltage between 32 – earth
OK:0.5V – 1.5V
Check connector:C37
NG > Repair
MUTII/III Service data
• No.18 Pressure sensor
OK:P.2232 (Refer to Service Data List)*2
NG > replace 4WDECU
OK > intermittent malfunction
Measurement at F27 pressure sensor connector
•Undo connector, take measurement on harness side
• Resistance between 3 – earth
OK:2Ω or less
Check connector:F27
NG: repair
Replace pressure sensor
Check connector:C37, C20, C30, F22, F27
NG > Repair
Chec
k harness between pressure sensor – 4WD ECU
• Check to see if power supply line is broken, earth, or
damaged.
• Check for broken output wire, earth, or damage
NG > Repair
Replace pressure sensor
Connector check:C37, C20, F22, F27
NG > repair
Check harness between pressure sensor – 4WDECU
•Check to see if earth wire is broken or damaged
NG > repair
Replace 4WDECU
Code No.46 Pressure sensor system (earth wire broken)Assumed cause of concern
Code No.46 is output when output signal from pressure
sensor is 2.0V or more.• Harness, connector malfunction
• Pressure sensor malfunction
• 4WDECU malfunction
NG
OK
OK
OKNG
OK
OK
OKNG
OK
OK

MANUAL TRANSMISSION TROUBLESHOOTING229
Code No.47 Pressure sensor system (abnormal power supply)Assumed cause of concern
Code No.47 is output when, with pressure sensor power supply OFF, the pressure
sensor power supply voltage is 4.0V or more, and when pressure sensor power supply
is ON, the pressure sensor power supply voltage is 4.0V or less.• Harness, connector malfunction
• Pressure sensor malfunction
• 4WDECU malfunction
MUTII/III Service data
•
No.19 pressure sensor power supply
OK:5V
OK > Intermittent malfunction
Measurement at C37 4WDECU connector
•Measure ECU terminal voltage
•Ignition switch: ON
•Voltage between 43 – earth
OK:4.9V – 5.1V
Check connector:C37
NG > Repair
MUTII/III Service data
•
No.19 Pressure sensor
OK:5V
NG > replace 4WDECUOK > intermittent malfunction
Connector check:C37, C20, C30, F22, F27
NG > repair
Check harness between pressure sensor – 4WDECU
•Check to see if power supply wire is broken, earth, or
damaged
NG > repair
Replace pressure sensor
NG
NG
OK
OK
OK
OK

MANUAL TRANSMISSION TROUBLESHOOTING2210
Code No.51 Longitudinal G sensor systemAssumed cause of concern
Code No.51 is output when the longitudinal G sensor signal
falls below 0.5V or rises above 4.5V.• Harness, connector malfunction
• Longitudinal G sensor malfunction
• ABSECU malfunction
• 4WDECU malfunction
Remarks*2: refer to ’011 Lancer Evolution VII Service Manual (No.1036K02)
MUTII/III Service data
• No.14 longitudinal G sensor power voltage
OK:P.2232 Refer to (Service Data List)*2
OK > Intermittent malfunction
Measurement at D29 longitudinal G sensor connector
• Undo connector and measure on harness side
• Ignition switch: ON
(1) Voltage between 1 earth
OK:battery voltage
(2) Resistance between 3 – earth
OK:2Ω or less
D29
Harness side
connector
• Remove longitudinal G sensor
• Connect the special tool between D29 longitudinal
G sensor connector harness side connector and
longitudinal G sensor.
• Ignition switch: ON
• Voltage between 2 – body earth (when longitudinal
G sensor is set on a flat surface)
OK:2.4 – 2.6V
• Voltage between 2 – body earth (when longitudinal
G sensor is placed so that the label surface facesside
ways)
OK:3.3 – 3.7V
Connector check:D29, C38, C20, B109 AYC fitted vehicles> D29, C20, C38 vehicles>
NG > repair
Check harness between longitudinal G sensor – 4WD
ECU
• Check for broken output wire, earth, damage
Check harness between longitudinal G sensor – ABSECU
•Check output wire for earth, damage
NG > repair
Connector check:D29, C212, C210
NG > repair
Check harness between longitudinal G sensor –
ignition switch.
• Check for broken power supply wire, earth, damage
• NG > repair
Connector check:D29, C20, B109 fitted vehicles> D29, C20, C38,
NG > repair
Check harness between longitudinal G sensor – ABS
ECU
•Check to see if earth wire broken or damaged
NG > repair
Check harness between longitudinal G sensor – 4WD
ECU
• Check to see if earth wire broken or damaged
NG > repair
MUTII/III Service data
• No.14 longitudinal G sensor voltage
OK:Refer to P.2232 (Service Data List)*2
NG > Refer to Group 35C – Troubleshooting*2
or 4WDECU vehicles> Replace
OK > intermittent malfunction
Replace longitudinal G sensor
MUTII/III Service data• No.14 longitudinal G sensor voltage
OK:Refer to P.2232 (Service Data List)*2
NG > Refer to Group 35C – Troubleshooting*2
or 4WDECU vehicles> Replace
OK > intermittent malfunction
label label
OK
NG
(1) NG
NG
(2) NG
OK
OK
OK
OK
OK
OK