Mitsubishi Colt Ralliart. Manual - part 45

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-134

Code No. P0335: Crank Angle Sensor System

OPERATION

• Power is supplied to the crank angle sensor (ter-

minal No. 3) from the engine control relay (termi-
nal No. 4) and is earthed to the engine-ECU 
<M/T> or engine-CVT-ECU <CVT> (terminal No. 
28) from the crank angle sensor (terminal No. 1).

• A power voltage of 5 V is applied to the crank 

angle sensor output terminal (terminal No. 2) 
from the engine-ECU <M/T> or engine-CVT-ECU 
<CVT> (terminal No. 13).

AK402689

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1

2

4

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2 3

19

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1213

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8 9

L

10

37
52 53 54 555657585960616263646566

38 39 404142434445464748495051

22 23 24 252627282930313233343536

7

5

3

1

6

4

2

Crank Angle Sensor Circuit

1

1

R

Fusible link

16

20A

J/B

Engine
control
relay

Crank
angle
sensor

4

1

2

2

3

1

3

6

4

Engine-ECU <M/T> or
engine-CVT-ECU <CVT>

28

13

BR-W

G-R

R

L-W

R

B-106

A-114

B-112

A-17

B-108

A-133

MU802337

AC

To engine-ECU <M/T> or
engine-CVT-ECU <CVT>

Wire colour code
B: Black  LG: Light green  G: Green  L: Blue  W: White  Y: Yellow  SB: Sky blue  BR: Brown  O: Orange  GR: Gray
R: Red  P: Pink  V: Violet  Pu: Purple

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-135

FUNCTION

• The crank angle sensor detects the crank angle 

(position) and inputs a pulse signal to the 
engine-ECU <M/T> or engine-CVT-ECU <CVT>.

• In response to the signal, the engine-ECU <M/T> 

or engine-CVT-ECU <CVT> controls the injector, 
etc.

TROUBLE JUDGMENT

Check Condition

• Ignition switch is in "ON" position <M/T>.

Judgment Criteria

• Pulse signal from crank angle sensor continues 

264 times and engine speed is less than 440 
r/min <M/T>.

• Crank angle sensor signal pattern is abnormal 

<M/T>.

Check Condition

• Ignition switch is in "ON" position <M/T>.

Judgment Criterion

• Crank angle sensor signal pattern is not normal 

for 4 seconds and engine speed is more than 440 
r/min <M/T>.

Check Condition

• While engine is cranking.

Judgment Criterion

• Crank angle sensor output voltage has not been 

changed (no pulse signal has been input) for 4 
seconds.

PROBABLE CAUSES

• Failed crank angle sensor

• Open/short circuit in crank angle sensor circuit or 

loose connector contact

• Failed engine-ECU <M/T> or engine-CVT-ECU 

<CVT>

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list

• Refer to Data List Reference Table 

P.13A-331

.

a. Item 22: Crank angle sensor 

Q: Is the check result normal? 

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunctions 

P.00-13

).

NO : 

Go to Step 2 .

STEP 2. Connector check: A-133 crank angle 
sensor connector

Q: Is the check result normal? 

YES : 

Go to Step 3 .

NO : 

Repair or replace the connector.

STEP 3. Perform voltage measurement at A-133 
crank angle sensor connector.

• Disconnect connector, and measure at harness 

side.

• Ignition switch: ON 

• Voltage between terminal No. 2 and earth.

OK: 4.9 

− 5.1 V

Q: Is the check result normal? 

YES : 

Go to Step 9 .

NO : 

Go to Step 4 .

AK402016

1

2

3

AC

Connector: A-133

A-133 (B)

A-133 Harness side 
connector

AK402016

1

2

3

AC

Connector: A-133

A-133 (B)

A-133 Harness side 
connector

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-136

STEP 4. Perform voltage measurement at A-114 
engine-ECU connector or engine-CVT-ECU 
connector.

• Disconnect engine-ECU connector or 

engine-CVT-ECU connector, and connect special 
tool power plant ECU check harness 
(MB991987), and then measure the voltage on 
the check connector.

• Disconnect A-133 crank angle sensor connector.

• Ignition switch: ON 

• Voltage between terminal No. 13 and earth.

OK: 4.9 

− 5.1 V

Q: Is the check result normal? 

YES : 

Go to Step 5 .

NO : 

Go to Step 6 .

STEP 5. Connector check: A-114 engine-ECU 
connector or engine-CVT-ECU connector

Q: Is the check result normal? 

YES : 

Check and repair harness between A-133 

(terminal No. 2) crank angle sensor 
connector and A-114 (terminal No. 13) 
engine-ECU connector or engine-CVT-ECU 
connector.

• Check output line for open circuit.

NO : 

Repair or replace the connector.

AK402745

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66

L

AE

A-114

Connector: 

A-114

Engine-ECU <M/T> or
engine-CVT-ECU <CVT>

Battery

A-114 Special tool power plant ECU check 
harness

AK402016

1

2

3

AC

Connector: A-133

A-133 (B)

A-133 Harness side 
connector

AK402745

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4

2

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3

1

9

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66

L

AD

A-114

Connector: 

A-114

Harness side connector

Engine-ECU <M/T> or
engine-CVT-ECU <CVT>

Battery

AK402016

1

2

3

AC

Connector: A-133

A-133 (B)

A-133 Harness side 
connector

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-137

STEP 6. Connector check: A-114 engine-ECU 
connector or engine-CVT-ECU connector

Q: Is the check result normal? 

YES : 

Go to Step 7 .

NO : 

Repair or replace the connector.

STEP 7. Check harness between A-133 (terminal 
No. 2) crank angle sensor connector and A-114 
(terminal No. 13) engine-ECU connector or 
engine-CVT-ECU connector.

• Check output line for short circuit.

Q: Is the check result normal? 

YES : 

Go to Step 8 .

NO : 

Repair the damaged harness wire.

STEP 8. M.U.T.-III data list

• Refer to Data List Reference Table 

P.13A-331

.

a. Item 22: Crank angle sensor 

Q: Is the check result normal? 

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Use Troubleshooting/Inspection 

Service Points 

− How to Cope with 

Intermittent Malfunctions 

P.00-13

).

NO : 

Replace engine-ECU <M/T> or 
engine-CVT-ECU <CVT>.

AK402745

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66

L

AD

A-114

Connector: 

A-114

Harness side connector

Engine-ECU <M/T> or
engine-CVT-ECU <CVT>

Battery

AK402016

1

2

3

AC

Connector: A-133

A-133 (B)

A-133 Harness side 
connector

AK402745

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4

2

5

3

1

9

7

8

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11

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52

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55

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62

63

64

65

66

L

AD

A-114

Connector: 

A-114

Harness side connector

Engine-ECU <M/T> or
engine-CVT-ECU <CVT>

Battery

Main

Index

Group

TOC