Mitsubishi Grandis. Manual - part 753

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI)

13A-263

STEP 3. Perform resistance measurement at 
C-102 accelerator pedal position sensor 
connector.

• Disconnect connector, and measure at harness 

side.

• Resistance between terminal No. 5 and earth.

OK: 2 

Ω or less

Q: Is the check result normal?

YES : 

Go to Step 7 .

NO : 

Go to Step 4 .

STEP 4. Connector check: C-113 engine-ECU 
<M/T> connector or engine-A/T-ECU <A/T> 
connector

Q: Is the check result normal?

YES : 

Go to Step 5 .

NO : 

Repair or replace.

AK305627

1

6 5 4 3 2

Connector: C-102

AB

C-102 (B)

Harness side
connector

C-102 (B)

<L.H. drive vehicles>

<R.H. drive vehicles>

AK305616AB

Connector: C-113

<L.H. drive vehicles>

<R.H. drive vehicles>

C-113 (GR)

C-113 (GR)

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Harness side connector

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI)

13A-264

STEP 5. Check harness between C-102 (terminal 
No. 5) accelerator pedal position sensor 
connector and C-113 (terminal No. 96) 
engine-ECU <M/T> connector or engine-A/T-ECU 
<A/T> connector.

NOTE: Before checking harness, check intermediate 
connector C-116, and repair if necessary.

• Check earthing line for open circuit and damage.

Q: Is the check result normal?

YES : 

Go to Step 6 .

NO : 

Repair.

STEP 6. MUT-III data list

• Refer to Data List Reference Table 

P.13A-363

.

a. Item 77: Accelerator pedal position sensor 

(sub)

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Use 

Troubleshooting/Inspection Service Points 

P.00-5

).

NO : 

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

STEP 7. Replace the accelerator pedal assembly

• After replacing the accelerator pedal assembly, 

re-check the trouble symptoms.

Q: Is the check result normal?

YES : 

Check end.

NO : 

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

AK305627

1

6 5 4 3 2

Connector: C-102

AB

C-102 (B)

Harness side
connector

C-102 (B)

<L.H. drive vehicles>

<R.H. drive vehicles>

AK305616AB

Connector: C-113

<L.H. drive vehicles>

<R.H. drive vehicles>

C-113 (GR)

C-113 (GR)

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Harness side connector

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI)

13A-265

Code No. P2135: Throttle Position Sensor (Main and Sub) Range/Performance Problem

OPERATION

• Refer to Code No. P0122: Throttle Position 

Sensor (main) Circuit Low Input 

P.13A-44

.

• Refer to Code No. P0222: Throttle Position 

Sensor (sub) Circuit Low Input 

P.13A-135

.

FUNCTION

• Engine-ECU <M/T> or engine-A/T-ECU <A/T> 

checks the throttle position sensor output signal 
characteristics for abnormal conditions.

TROUBLE JUDGMENT

Check Condition

• Ignition switch is in ON position.

• Throttle position sensor (main) output voltage is 

0.35 

− 2.5 V.

• Throttle position sensor (sub) output voltage is 

2.25 

− 4.8 V

Judgment Criterion

• Using the formula given below, the voltage of 0.3 

V or higher is obtained for 0.5 second: V* 

− V** − 

2V

V*: throttle position sensor (main) output voltage 
V**: throttle position sensor (sub) output voltage.

PROBABLE CAUSE

• Failed throttle position sensor

• Open/short circuit in throttle position sensor 

circuit or loose connector contact

DIAGNOSIS PROCEDURE

STEP 1. Connector check: C-113 engine-ECU 
<M/T> connector or engine-A/T-ECU <A/T> 
connector and B-06 electronic-controlled throttle 
valve connector

Q: Is the check result normal?

YES : 

Go to Step 2 .

NO : 

Repair or replace.

AK305616AB

Connector: C-113

<L.H. drive vehicles>

<R.H. drive vehicles>

C-113 (GR)

C-113 (GR)

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Harness side connector

AK300972

1

6 5 4 3 2

AC

Harness side connector

Connectors: B-06

B-06 (B)

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI)

13A-266

STEP 2. Check harness between B-06 (terminal 
No. 4) electronic-controlled throttle valve 
connector and C-113 (terminal No. 115) 
engine-ECU <M/T> connector or engine-A/T-ECU 
<A/T> connector.

• Check output line for short circuit.

Q: Is the check result normal?

YES : 

Go to Step 3 .

NO : 

Repair.

STEP 3. Check harness between B-06 (terminal 
No. 6) electronic-controlled throttle valve 
connector and C-113 (terminal No. 113) 
engine-ECU <M/T> connector or engine-A/T-ECU 
<A/T> connector.

• Check output line for short circuit.

Q: Is the check result normal?

YES : 

Go to Step 4 .

NO : 

Repair.

STEP 4. Replace throttle body assembly.

• After throttle body assembly is replaced, re-check 

for trouble symptom.

Q: Does trouble system persist?

YES : 

Replace engine-ECU <M/T> or 

engine-A/T-ECU <A/T>.

NO : 

Check end.

AK300972

1

6 5 4 3 2

AC

Harness side connector

Connectors: B-06

B-06 (B)

AK305616AB

Connector: C-113

<L.H. drive vehicles>

<R.H. drive vehicles>

C-113 (GR)

C-113 (GR)

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Harness side connector

AK300972

1

6 5 4 3 2

AC

Harness side connector

Connectors: B-06

B-06 (B)

AK305616AB

Connector: C-113

<L.H. drive vehicles>

<R.H. drive vehicles>

C-113 (GR)

C-113 (GR)

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Harness side connector