Mitsubishi Lancer Evolution 7. Manual — part 249
MANUAL TRANSMISSION - Troubleshooting <ACD>
MANUAL TRANSMISSION - Troubleshooting <ACD>
22A-19
Code No.45 Pressure sensor system (Open circuit or
ground)
Probable cause
Code No.45 is output when the output signal from the pressure sensor is below
0.2 V.
D
Harness or connector fault
D
Pressure sensor fault
D
4WD-ECU fault
NG
MUT-II Data List
D
No.18 Pressure sensor
OK: Refer to P.22A-35 (Data List Reference Table).
OK→Intermittent malfunction (Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions)
OK
OK
NG
Check the harness between the pressure sensor and
4WD-ECU.
D
Check for open circuit, ground, and damage of the power
line.
D
Check for open circuit, ground, and damage of the output
line.
NG→Repair
OK
Replace the pressure sensor.
Measure at 4WD-ECU connector C-43.
D
Measure the ECU terminal voltage.
D
Ignition switch: ON
D
Voltage between 32 and earth
OK: 0.5 - 1.5 V
Check the following connectors:
<L.H. drive vehicles> C-43, C-128, C-134, F-24, F-29
<R.H. drive vehicles> C-43, C-134, F-24, F-29
NG→Repair
MUT-II Data List
D
No.18 Pressure sensor
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
Check the following connector: C-43
NG→Repair
Code No.46 Pressure sensor system (open earth)
Probable cause
Code No.46 is output when the output signal from the pressure sensor is above
2.0 V.
D
Harness or connector fault
D
Pressure sensor fault
D
4WD-ECU fault
OK
OK
NG
Check the harness between the pressure sensor and
4WD-ECU.
D
Check for open circuit and damage of the earth line.
NG→Repair
OK
Replace the pressure sensor.
Measure at pressure sensor connector F-29.
D
Disconnect the connector and measure at the harness
side.
D
Resistance between terminal 3 and earth
OK: 2 Ω or less
Check the following connectors:
<L.H. drive vehicles> F-29, C-44, C-128, C-134, F-24
<R.H. drive vehicles> F-29, C-44, C-134, F-24
NG→Repair
Replace the 4WD-ECU.
OK
Check the following connector: F-29
NG→Repair
MANUAL TRANSMISSION - Troubleshooting <ACD>
22A-20
Code No.47 Pressure sensor system (Abnormal power
supply)
Probable cause
Code No.47 is output when the pressure sensor power supply voltage is above
4.0V during pressure sensor power OFF or less than 4.0V during pressure
sensor power ON.
D
Harness or connector fault
D
Pressure sensor fault
D
4WD-ECU fault
NG
MUT-II Data List
D
No.19 Pressure sensor power supply
OK: Approx. 5 V
OK→Intermittent malfunction (Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions)
OK
OK
NG
Check the harness between the pressure sensor and
4WD-ECU.
D
Check for open circuit, ground and damage of the power
line.
NG→Repair
OK
Replace the pressure sensor.
Measure at 4WD-ECU connector C-43.
D
Measure the ECU terminal voltage.
D
Ignition switch: ON
D
Voltage between terminal 43 and earth
OK: 4.9 - 5.1 V
Check the following connectors:
<L.H. drive vehicles> C-43, C-128, C-134, F-24, F-29
<R.H. drive vehicles> C-43, C-134, F-24, F-29
NG→Repair
OK
Check the following connector: C-43
NG→Repair
MUT-II Data List
D
No.19 Pressure sensor power supply
OK: Approx. 5 V
NG→Replace the 4WD-ECU.
OK→Intermittent malfunction (Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions)
MANUAL TRANSMISSION - Troubleshooting <ACD>
22A-21
Code No.51 Longitudinal G sensor system
Probable cause
Code No.51 is output when the output signal of the longitudinal G sensor is less
than 0.5 V or above 4.5 V.
D
Harness or connector fault
D
Longitudinal G sensor fault
D
ABS-ECU fault <Vehicles with ACD and AYC>
D
4WD-ECU fault
MB991348
OK
OK
(1) NG
NG
Check the following connectors: D-32, C-213, C-210
NG→Repair
MUT-II Data List
D
No.14 Longitudinal G sensor voltage
OK: Refer to P.22A-35 (Data List Reference Table).
OK→Intermittent malfunction (Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions)
Check the harness between the longitudinal G sensor and
ignition switch.
D
Check for open circuit, ground and damage of the power
line.
NG→Repair
Measure at longitudinal G sensor connector D-32.
D
Disconnect the connector and measure at the harness
side.
D
Ignition switch: ON
(1) Voltage between terminal 1 and earth
OK: System voltage
(2) Resistance between terminal 3 and earth.
OK: 2 Ω or less
(2) NG
OK
Check the following connectors:
<L.H. drive vehicles with ACD and AYC> D-32, C-128, C-130,
B-123
<R.H. drive vehicles with ACD and AYC> D-32, C-128, B-123
<L.H. drive vehicles with ACD> D-32, C-128, C-130, C-44
<R.H. drive vehicles with ACD> D-32, C-44
NG→Repair
OK
Check the harness between the longitudinal G sensor and
ABS-ECU. <Vehicles with ACD and AYC>
D
Check for open circuit and damage of the earth line.
Check the harness between the longitudinal G sensor and
4WD-ECU. <Vehicles with ACD>
D
Check for open circuit and damage of the earth line.
NG→Repair
MUT-II Data List
D
No.14 Longitudinal G sensor voltage
OK: Refer to P.22A-35 (Data List Reference Table).
NG→Refer to GROUP 35B - Troubleshooting, <Vehicles with
ACD and AYC> or replace the 4WD-ECU <Vehicles with
ACD>.
OK→Intermittent malfunction (Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions)
NG
D
Remove the longitudinal G sensor.
D
Connect the special tool between the connector D-32 at
the harness of the longitudinal G sensor and the
longitudinal G sensor.
D
Ignition switch: ON
D
Voltage between terminal 2 and body earth [when the
longitudinal G sensor is placed horizontally]
OK: 2.4 - 2.6 V
D
Voltage between terminal 2 and body earth [when the
longitudinal G sensor is placed with the labeled side
facing at the side]
OK: 3.3 - 3.7 V
Label
D-32
Harness side
connector
Label
Replace the longitudinal G sensor.
OK
OK
Check the following connectors:
<Vehicles with ACD and AYC> D-32, C-44, C-128, B-123
<L.H. drive vehicles with ACD> D-32, C-128, C-44
<R.H. drive vehicles with ACD> D-32, C-44
NG→Repair
OK
MUT-II Data List
D
No.14 Longitudinal G sensor voltage
OK: Refer to P.22A-35 (Data List Reference Table).
NG→Refer to GROUP 35B - Troubleshooting <Vehicles with
ACD and AYC>, or replace the 4WD-ECU.
OK→Intermittent malfunction (Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions)
Check the harness between the longitudinal G sensor and
4WD-ECU.
D
Check for open circuit, ground and damage of the power
line.
Check the harness between the longitudinal G sensor and
ABS-ECU. <Vehicles with ACD and AYC>
D
Check for ground and damage of the power line.
NG→Repair
MANUAL TRANSMISSION - Troubleshooting <ACD>
22A-22
Code No.52 Longitudinal G sensor system
Probable cause
Code No.52 is output when the G sensor has exceeded the specified value in a
state where the ABS and brake are not operating above the vehicle speed of 10
km/h.
D
Harness or connector fault
D
Longitudinal G sensor fault
D
ABS-ECU fault <Vehicles with ACD and AYC>
D
4WD-ECU fault
OK
NG
MUT-II Data List
D
No.14 Longitudinal G sensor voltage
OK: Refer to P.22A-35 (Data List Reference Table).
OK→Intermittent malfunction (Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions)
OK
Check the following connectors:
<Vehicles with ACD and AYC> D-32, C-44, C-128, B-123
<L.H. drive vehicles with ACD> D-32, C-128, C-44
<R.H. drive vehicles with ACD> D-32, C-44
NG→Repair
NG
Check the longitudinal G sensor. (Refer to P.22A-21.)
NG→Replace
OK
MUT-II Data List
D
No.14 Longitudinal G sensor voltage
OK: Refer to P.22A-35. (Data List Reference Table)
NG→Refer to GROUP 35B - Troubleshooting <Vehicles with
ACD and AYC>, or replace the 4WD-ECU.
OK→Intermittent malfunction (Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions)
OK
Check the harness between the longitudinal G sensor and
4WD-ECU.
D
Check for open circuit, ground and damage of the power
line.
Check the harness between the longitudinal G sensor and
ABS-ECU. <Vehicles with ACD and AYC>
D
Check for ground and damage of the power line
NG→Repair
Measure at 4WD-ECU connector C-44.
D
Measure the ECU terminal voltage.
D
Ignition switch: ON
D
Voltage between terminal 23 and earth
OK: 2.4 - 2.6 V (body is in horizontal state)
OK
Check the following connectors: C-44
NG→Repair
MUT-II Data List
D
No.14 Longitudinal G sensor voltage
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)
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