Mitsubishi Lancer Evolution 8 MR. Manual - part 17

 

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Mitsubishi Lancer Evolution 8 MR. Manual - part 17

 

 

MANUAL TRANSMISSION  - TROUBLESHOOTING

22-6

Vehicle speed sensor fitting check
NG -> repair

MUT-II/III Service Data
• No.01 Vehicle speed sensor <FR>
• No.02 Vehicle speed sensor <FL>
• No.03 Vehicle speed sensor <RR>
• No.04 Vehicle speed sensor <RL>

OK: Speed shown on speedometer and MUT-II/III agree

OK -> Intermittent malfunction

Measurement at C-38 4WD-ECU connector
• Undo connector and take measurement on harness

side

(1) Resistance between 9 – 22 (vehicle speed sensor

<FR>)

(2) Resistance between 6 - 19 (vehicle speed sensor

<FL>)

(3) Resistance between 7 - 20 (vehicle speed sensor

<RR>)

(4) Resistance between 8 – 21 (vehicle speed sensor

<RL>)
OK: 1.2 – 1.6k

Ω

Check vehicle wheel speed sensor output voltage (ref.
p.22-41)

*2

Check connector: C-38
NG -> repair

MUT-II/III Service data
• No.1 Vehicle speed sensor <FR>
• No.2 Vehicle speed sensor <FL>
• No.3 Vehicle speed sensor <RR>
• No.4 Vehicle speed sensor <RL>

OK: Speed shown on speedometer and MUT-II/III
agree

NG -> Replace 4WD-ECU
OK -> Intermittent malfunction

Vehicle wheel speed sensor
(Refer to Group 35B – Vehicle wheel speed sensor)

*1

NG -> Repair

Connector checks: C-38, A-05, A-31, D-11, D-05, 
D-12, C-131, C-20, C-115, C-34
NG -> Repair

Harness check between 4WD-ECU – each vehicle
wheel speed sensor
• Check output wire for broken wire, earthing, short
• Check earth wire to see if broken or damaged
NG -> repair

MUT-II/III Service data
• No.1 Vehicle speed sensor <FR>
• No.2 Vehicle speed sensor <FL>
• No.3 Vehicle speed sensor <RR>
• No.4 Vehicle speed sensor <RL>

OK: Speed shown on speedometer and MUT-II/III
agree

NG -> Replace 4WD-ECU
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
• 4WD-ECU malfunction

<ACD fitted vehicles>
Remarks

*1

: refer to ’00-5 Lancer Sedia Service Manual (No.1036K00)

*2

: refer to ’01-1 Lancer Evolution VII Service Manual (No.1036K02)

OK

OK

OK

OK

NG

NG

OK

NG

OK

OK

OK

MANUAL TRANSMISSION  - TROUBLESHOOTING

22-7

MUT-II/III Diagnosis code
• Has MPI diagnosis code No.P0120 been output?

MUT-II/III Service Data
• No.13 TPS voltage

OK: P.22-32 (Refer to Service Data List)

*2

OK -> Intermittent malfunction

Measurement at C-37 4WD-ECU 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: C-37
NG -> Repair

MUT-II/III Service data
• No.13 TPS voltage

OK: P.22-32 (Refer to Service Data List)

*2

NG -> replace 4WD-ECU
OK -> intermittent malfunction

Refer to Group 13D – Troubleshooting

*2

TPS adjustment (Refer to Group 13D – Vehicle
Servicing)

*2

Connector check: C-37, B-06, C-23
NG -> repair

Check harness between TPS – 4WD-ECU
• Check to see if output wire is broken, short, or

damaged

NG -> repair

Code No.41, 42 TPS  system

Assumed 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
• 4WD-ECU malfunction

Remarks

*2

: refer to ’01-1 Lancer Evolution VII Service Manual (No.1036K02)

NO

NG

OK

OK

OK

OK

YES

NG

MANUAL TRANSMISSION  - TROUBLESHOOTING

22-8

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
• 4WD-ECU malfunction

Remarks

*2

: refer to ’01-1 Lancer Evolution VII Service Manual (No.1036K02)

MUT-II/III Service data
• No.18 pressure sensor

OK: P.22-32 (Refer to Service Data List)

*2

OK -> Intermittent malfunction

Measurement at C-37 4WD-ECU connector
• Measure ECU terminal voltage
• Ignition switch: ON
• Voltage between 32 – earth
OK: 0.5V – 1.5V

Check connector: C-37
NG -> Repair

MUT-II/III Service data
• No.18 Pressure sensor

OK: P.22-32 (Refer to Service Data List)

*2

NG -> replace 4WD-ECU
OK -> intermittent malfunction

Measurement at F-27 pressure sensor connector
• Undo connector, take measurement on harness side
• Resistance between 3 – earth

OK: 2

Ω

or less

Check connector: F-27
NG: repair

Replace pressure sensor

Check connector: C-37, C-20, C-30, F-22, F-27
NG -> Repair

Check 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: C-37, C-20, F-22, F-27 
NG -> repair

Check harness between pressure sensor – 4WD-ECU
• Check to see if earth wire is broken or damaged
NG -> repair

Replace 4WD-ECU

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
• 4WD-ECU malfunction

NG

OK

OK

OK

NG

OK

OK

OK

NG

OK

OK

MANUAL TRANSMISSION  - TROUBLESHOOTING

22-9

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
• 4WD-ECU malfunction

MUT-II/III Service data
• No.19 pressure sensor power supply

OK: 5V

OK -> Intermittent malfunction

Measurement at C-37 4WD-ECU connector
• Measure ECU terminal voltage
• Ignition switch: ON
• Voltage between 43 – earth

OK: 4.9V – 5.1V

Check connector: C-37
NG -> Repair

MUT-II/III Service data
• No.19 Pressure sensor

OK: 5V

NG -> replace 4WD-ECU
OK -> intermittent malfunction

Connector check: C-37, C-20, C-30, F-22, F-27 
NG -> repair

Check harness between pressure sensor – 4WD-ECU
• Check to see if power supply wire is broken, earth, or

damaged

NG -> repair

Replace pressure sensor

NG

NG

OK

OK

OK

OK

 

 

 

 

 

 

 

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