Mitsubishi Colt Ralliart. Manual - part 61

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-198

Code No. P2101: Throttle Valve Control Servo Magneto Malfunction

OPERATION

• Controls the current that is applied from the 

engine-ECU <M/T> or engine-CVT-ECU <CVT> 
(terminals No. 7, No. 22) to the electronically con-
trolled throttle valve (terminals No. 1, No. 2).

FUNCTION

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

<CVT> check whether the throttle valve control 
servo magneto failed.

TROUBLE JUDGMENT

Check Conditions

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

• Battery positive voltage is more than 8.3 V.

Judgement Criteria

• Driving current of throttle valve control servo is 

abnormal <M/T>.

or

• Temperature in driving circuit of throttle valve 

control servo is abnormal <M/T>.

• The coil temperature of the throttle valve control 

servo is 180

°C or higher for 0.8 second <CVT>.

PROBABLE CAUSES

• Failed throttle valve control servo

• Open/short circuit in throttle valve control servo 

circuit or lose connector contact

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

<CVT>

DIAGNOSIS PROCEDURE

STEP 1. Connector check: A-107 
electronic-controlled throttle valve connector

Q: Is the check result normal?

YES : 

Go to Step 2 .

NO : 

Repair or replace the connector.

STEP 2. Check throttle valve control servo itself.

• Check throttle valve control servo itself (Refer to 

P.13A-366

).

Q: Is the check result normal?

YES : 

Go to Step 3 .

NO : 

Replace throttle body assembly.

STEP 3. Connector check: A-114 engine-ECU 
connector or engine-CVT-ECU connector

Q: Is the check result normal? 

YES : 

Go to Step 4 .

NO : 

Repair or replace the connector.

AK402006

1

6 5 4 3 2

AC

A-107 (B)

Connector: A-107

A-107 Harness side
connector

AK402006

1

6 5 4 3 2

AC

A-107 (B)

Connector: A-107

A-107 Harness side
connector

AK402745

6

4

2

5

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

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-199

STEP 4. Check harness between A-107 (terminal 
No. 1) electronic-controlled throttle valve 
connector and A-114 (terminal No. 7) engine-ECU 
connector or engine-CVT-ECU connector.

• Check output line for short circuit and damage.

Q: Is the check result normal?

YES : 

Go to Step 5 .

NO : 

Repair the damaged harness wire.

STEP 5. Check harness between A-107 (terminal 
No. 2) electronic-controlled throttle valve 
connector and A-114 (terminal No. 22) 
engine-ECU connector or engine-CVT-ECU 
connector.

• Check output line for short circuit and damage.

Q: Is the check result normal?

YES : 

Go to Step 6 .

NO : 

Repair the damaged harness wire.

STEP 6. Check the trouble symptoms.

Q: Is the check result normal? 

YES : 

Replace engine-ECU <M/T> or 

engine-CVT-ECU <CVT>.

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunctions 

P.00-13

).

AK402006

1

6 5 4 3 2

AC

A-107 (B)

Connector: A-107

A-107 Harness side
connector

AK402745

6

4

2

5

3

1

9

7

8

10

11

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59

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61

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

AK402006

1

6 5 4 3 2

AC

A-107 (B)

Connector: A-107

A-107 Harness side
connector

AK402745

6

4

2

5

3

1

9

7

8

10

11

12

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14

15

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50

51

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53

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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

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-200

Code No. P2108: Throttle Valve Control Servo Processor Malfunction

FUNCTION

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

<CVT> checks the throttle valve control servo 
processor for abnormal conditions.

TROUBLE JUDGMENT

Check Conditions

• Ignition switch is in "ON" position.

• Throttle position sensor (main) output voltage is 

between 0.2 and 4.8 V.

• The power supply voltage of the throttle valve 

control servo is more than 6 V <CVT>.

Judgement Criterion

• Malfunction of the throttle position sensor (main) 

input interface.

PROBABLE CAUSE

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

<CVT>

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code.

Q: Is any other diagnosis code than P2108 output?

YES : 

Inspection chart for diagnosis code (Refer 

to 

P.13A-20

).

NO : 

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

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-201

Code No. P2122: Accelerator Pedal Position Sensor (Main) Circuit Low Input

OPERATION

• A power voltage of 5 V is applied to the accelera-

tor pedal position sensor (terminal No. 1) from the 
engine-ECU <M/T> or engine-CVT-ECU <CVT> 
(terminal No. 85).

• The power voltage is earthed to the engine-ECU 

<M/T> or engine-CVT-ECU <CVT> (terminal No. 
84) from the accelerator pedal position sensor 
(terminal No. 2).

• The sensor signal is inputted to the engine-ECU 

<M/T> or engine-CVT-ECU <CVT> (terminal No. 
83) from the accelerator pedal position sensor 
output terminal (terminal No. 3).

FUNCTION

• The accelerator pedal position sensor (main) out-

puts voltage which corresponds to the accelera-
tor pedal depression.

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

<CVT> checks whether the voltage is within a 
specified range.

TROUBLE JUDGMENT

Check Condition

• Ignition switch is in "ON" position.

Judgment Criteria

• Accelerator pedal position sensor (main) output 

voltage is 0.2 V or less <M/T>.

• Accelerator pedal position sensor (main) output 

voltage is 0.2 V or less for 1.0 second <CVT>.

AK402685

R

92 93 94 95969798

77 78 79 808182838485868788899091

99

100

107 108 109 110 111112113114115116117118119120121
122 123 124 125126127128129130131132133134135136

101102103104105106

71 72

73 74

75 76

6

1 2 3 4 5

5 V

85

1

Accelerator
pedal
position
sensor

(main)

Hall IC

Y-G

GR

BR-W

83

84

3

2

Accelerator Pedal Position Sensor (main) Circuit

A-08

B-26

AC

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