ignition MITSUBISHI LANCER EVOLUTION VIII 2004 User Guide

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 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 <AYC fitted vehicles>
• 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 <ACD +
AYC fitted vehicles> D29, C20, C38 <ACD fitted
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 <ACD+AYC fitted vehicles>
•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 <ACD + AYC
fitted vehicles> D29, C20, C38, <ACDfitted vehicles>
NG > repair
Check harness between longitudinal G sensor – ABS
ECU <ACD+AYC fitted vehicles>
•Check to see if earth wire broken or damaged
NG > repair
Check harness between longitudinal G sensor – 4WD
ECU <ACD fitted vehicles>
• 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
<ACD+AYC fitted vehicles> or 4WDECU <ACD fitted
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
<ACD+AYC fitted vehicles> or 4WDECU <ACD fitted
vehicles> Replace
OK > intermittent malfunction
label label
OK
NG
(1) NG
NG
(2) NG
OK
OK
OK
OK
OK
OK

MANUAL TRANSMISSION TROUBLESHOOTING2211
Code No.52 Longitudinal G sensor systemAssumed cause of concern
At 10kph or over, with ABS and brakes not applied, code No.
52 is output in cases where G sensor indicates higher than
specified value.• Harness, connector malfunction
• Longitudinal G sensor malfunction
• ABSECU malfunction <ACD+AYC fitted vehicles>
• 4WDECU malfunction
Remarks*2: refer to ’011 Lancer Evolution VII Service Manual (No.1036K02)
MUTII/III Service data
• No.14 longitudinal sensor voltage
OK:P.2232 Refer to (Service Data List)*2
OK > Intermittent malfunction
Longitudinal G sensor check (refer to P.2232)
*2
NG > replace
Measurement at C38 4WDECU connector
• ECU terminal voltage measurement
• Ignition switch: ON
• Voltage between 23 – earth
OK:2.4 – 2.6V (when vehicle is standing on flat
ground)
Connector check:C38
NG > repair
MUTII/III Service data
• No.14 longitudinal sensor voltage
OK:P.2232 Refer to (Service Data List)*2
NG > Replace 4WDECU
OK > Intermittent malfunction
Connector check:C38, D29, C20, B109
<ACD+AYC fitted vehicles> C38, C20, D29 <ACD
fitted vehicles> NG > repair
Check harness between longitudinal G sensor – 4WD
ECU
•Check to see if output wire is broken, earth, or
damaged
Check harness between longitudinal G sensor – ABS
ECU
<ACD+AYC fitted vehicles>
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
<ACD+AYC fitted vehicles> or replace 4WDECU
OK > intermittent malfunction
NG
OK
OK
OK
NG
OK
OK

MANUAL TRANSMISSION TROUBLESHOOTING2212
Code No.56 Longitudinal G sensor systemAssumed cause of concern
Code No.56 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 <ACD+AYC fitted vehicles>
• 4WDECU malfunction
Remarks*2: refer to ’011 Lancer Evolution VII Service Manual (No.1036K02)
MUTII/III Service data
• No.15 longitudinal G sensor power voltage
OK:P.2232 Refer to (Service Data List)*2
OK > Intermittent malfunction
Measurement at D31 lateral 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 D31 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 surf
ace faces
sideways)
OK:3.3 – 3.7V
Connector check:D31, C38, C20, B109 <ACD +
AYC fitted vehicles> D31, C20, C38 <ACD fitted
vehicles>
NG > repair
Check harness between lateral G sensor – 4WDECU
• Check for broken output wire, earth, damage
Check harness between lateral G sensor – ABSECU<ACD+AYC fitted vehicles>
•Check output wire for earth, damage
NG > repair
Connector check:D31, C212, C210
NG > repair
Check harness between lateral G sensor – ignition
switch.
• Check for broken power supply wire, earth, damage
NG > repair
Connector check:D31, C20, B109 <ACD + AYC
fitted vehicles> D31, C20, C38, <ACDfitted
vehicles>
NG > repair
Check harness between lateral G sensor – ABSECU
<ACD+AYC fitted vehicles>
MUTII/III Service data
•No.15 lateral G sensor voltage
OK:Refer to P.2232 (Service Data List)*2
NG > Refer to Group 35C – Troubleshooting*2
<ACD+AYC fitted vehicles> or 4WDECU <ACD fitted
vehicles> Replace
OK > intermittent malfunction
Replace lateral G sensor
MUTII/III Service data
• No.15 longitudinal G sensor voltage
OK:Refer to P.2232 (Service Data List)*2
NG > Refer to Group 35C – Troubleshooting*2
<ACD+AYC fitted vehicles> or 4WDECU <ACD fitted
vehicles> Replace
OK > intermittent malfunction
label label
(1) NG
NG
OK
(2) NG
NG
OK
OK
OK
OK
OK
OK

MANUAL TRANSMISSION TROUBLESHOOTING2213
Code No.57 Lateral G sensor systemAssumed cause of concern
At 10kph or over, with ABS and brakes not applied, code No.
57 is output in cases where G sensor indicates higher than
specified value.• Harness, connector malfunction
• Longitudinal G sensor malfunction
• ABSECU malfunction <ACD+AYC fitted vehicles>
• 4WDECU malfunction
Remarks*2: refer to ’011 Lancer Evolution VII Service Manual (No.1036K02)
MUTII/III Service data
• No.15 longitudinal sensor voltage
OK:P.2232 Refer to (Service Data List)*2
OK > Intermittent malfunction
Lateral G sensor check (refer to P.2220)
*2
NG > replace
Measurement at C38 4WDECU connector
•ECU terminal voltage measurement
• Ignition switch: ON
•Voltage between 11 – earth
OK:2.4 – 2.6V (when vehicle is standing on flat
ground)
Connector check:C38
NG > repair
MUTII/III Service data
•No.15 lateral sensor voltage
OK:P.2232 Refer to (Service Data List)*2
NG > Replace 4WDECU
OK > Intermittent malfunction
Connector check:C38, D31, C20, B109
<ACD+AYC fitted vehicles> C38, C20, D31 <ACD
fitted vehicles> NG > repair
Check harness between lateral G sensor – 4WDECU
•Check to see if output wire is broken, earth, or
damaged
Check harness between lateral G sensor – ABSECU
• Check to see if output wire earth or damaged
NG > repair
MUTII/III Service data
•No.15 lateral G sensor voltage
OK:Refer to P.2232 (Service Data List)*2
NG > Refer to Group 35C – Troubleshooting*2
<ACD+AYC fitted vehicles> or replace 4WDECU
OK > intermittent malfunction
NG
NG
OK
OK
OK
OK
OK

MANUAL TRANSMISSION TROUBLESHOOTING2215
Code No.62 ACD mode switch systemAssumed cause of concern
In cases where the ACD mode switch remains ON for 60
seconds or more, code No.61 is output.• ACD mode switch malfunction
• Harness, connector malfunction
Remarks*2: refer to ’011 Lancer Evolution VII Service Manual (No.1036K02)
MUTII/III Service data
• No.63 ACD mode switch
(1)Press ACD mode switch
OK:ON
(2)Release ACD mode switch
OK:OFF
OK > intermittent malfunction
Check ACD mode switch (refer to P.2253)
*2
NG > replace
Measurement at C134 ACD mode switch connector
• Undo connector, take measurement on harness side
•Ignition switch: ON
• Voltage between 2 – earth
OK:battery voltage
Measurement at C37 4WDECU connector
•Measure ECU terminal voltage
• Ignition switch: OFF
•Voltage between 47 – earth
(1)Press ACD mode switch
OK:battery voltage
(2)Release ACD mode switch
OK:1V or less
Connector check:C37
NG > repair
MUTII/III Service data
• No.63 ACD mode switch
(1)Press ACD mode switch
OK:ON
(2)Release ACD mode switch
OK:OFF
NG > replace 4WDECU
OK > intermittent malfunction
Connector check:C134, C209, C210
NG > repair
Check harness between ACD mode switch – ignition
switch
•Check for broken power supply wire, damage
NG > repair
Check harness between junction block – combi. Meter
•Check power supply wire for earth, damage
NG > repair
Connector check:C134, C133, C37
NG > repair
Check harness between 4WDECU – ACD mode
switch
• Check to see if output wire is broken or damagedNG > repair
NG
NG
NG
OK
OK
OK
OK
OK
OK
OK

MANUAL TRANSMISSION TROUBLESHOOTING2216
Code No.63 Parking brake switchAssumed cause of concern
In cases where, at 15kph or over, the parking brake switch
remains ON for 15 minutes or more, code No.63 is output.• Parking brake switch malfunction
•Harness, connector malfunction
• ABSECU malfunction, <ACD+AYC fitted vehicles>
•4WDECU malfunction
Remarks*1: Refer to ’005 Lancer Sedia Service Manual (No.1036K00)
MUTII/III Service data
• No.62 Parking brake switch
(1)Apply parking brake lever
OK:ON
(2)Release parking brake lever
OK:OFF
OK > intermittent malfunction
When parking brake lever is
released, does the brake
warning lamp go off?
Measurement at D25, parking
brake switch connector
•Undo connector, take
measurement on harness side
•Ignition switch: ON
• Voltage between 1 – earth
OK:battery voltage
Connector check:D25
NG > repair
Check, and if necessary adjust,
the play in the parking brake
lever
(refer to Group 36 – Vehicle
Servicing)
*1
NG > Adjust
Check parking brake switch
(refer to Group 36 – Vehicle
Servicing)
*1
NG > adjust
Connector check:C37, D25,
C20NG > repair
Connector check:D25, C37,
C20, B109 <ACD + AYC fitted
vehicles>
D25, C20, C37 <ACD fitted
vehicles>
NG > repair
(1)Check harness between
parking brake switch – 4WD
ECU
• Check output wire for
earth, damage
(2)Check harness between
parking brake switch –
combi.meter
• Check power supply wire
for earth, damage
(3) Check harness between
parking brake switch – ABS
ECU.
<ACDAYC fitted vehicles>
• Check output wire forearth, damage
NG > repair
Replace hydraulic unit, ABS
ECUCheck harness between
parking break switch – 4WD
ECU
• Check output wire to see if
broken or damaged
NG > repair
MUTII/III Service data
• No.62 Parking brake switch
(1)Apply parking brake lever
OK:ON
(2)Release parking brake lever
OK:OFF
NG > replace 4WDECU
OK > intermittent malfunction
Check brake warning lamp bulb
NG > replace
Replace combi. meter
YESOK
(1) OK
(2) OK
NG
NG
NO
OK
OK
OK
(3) OK
OK
OK
OK