Mitsubishi 380. Manual - part 605

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-512

STEP 2. Check for short circuit to ground between throttle 
position sensor connector B-06 (terminal No. 6) and 
ENGINE-ECU connector B-20 (terminal No. 42).
Q: Is the harness wire in good condition?

YES : Go to Step 3.
NO :  Repair it. Then go to Step 5.

03DB180A

CONNECTOR: B-06

B-06 (B)

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-513

STEP 3. Check for short circuit to ground between throttle 
position sensor connector B-06 (terminal No. 5) and 
ENGINE-ECU connector B-20 (terminal No. 57).
Q: Is the harness wire in good condition?

YES : Go to Step 4.
NO :  Repair it. Then go to Step 5.

STEP 4. Replace the throttle body assembly.
(1) Replace the throttle body assembly.
(2) Turn the ignition switch to the "ON" position.
(3) After the DTC has been deleted, read the DTC again.
(4) Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is DTC P2135 set?

YES : Then go to Step 5.
NO :  The inspection is complete.

03DB180A

CONNECTOR: B-06

B-06 (B)

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

03DB180A

CONNECTOR: B-06

B-06 (B)

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-514

STEP 5. Using diagnostic tool , read the diagnostic trouble 
code (DTC).

CAUTION

To prevent damage to diagnostic tool , always turn the 
ignition switch to the "LOCK"(OFF) position before con-
necting or disconnecting diagnostic tool .
(1) Connect diagnostic tool to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) After the DTC has been deleted, read the DTC again.
(4) Turn the ignition switch to the "LOCK"(OFF) position.

Q: Is DTC P2135 set?

YES : Retry the troubleshooting.
NO :  The inspection is complete.

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-515

DTC P2138: Accelerator Pedal Position Sensor (main and sub) Circuit Range/Performance Problem

CAUTION

If DTC P2138 has been set, DTC U1120 is also set. 
After P2138 has been diagnosed, don't forget to 
erase DTC U1120.

.

ACCELERATOR PEDAL POSITION 
SENSOR (MAIN AND SUB) 
RANGE/PERFORMANCE CIRCUIT

• Refer to DTC P2122 − Accelerator Pedal Position 

Sensor (Main) Circuit 

P.13A-476

.

• Refer to DTC P2127 − Accelerator Pedal Position 

Sensor (Sub) Circuit 

P.13A-493

.

.

CIRCUIT OPERATION

• Refer to DTC P2122 − Accelerator Pedal Position 

Sensor (Main) Circuit 

P.13A-476

.

• Refer to DTC P2127 − Accelerator Pedal Position 

Sensor (Sub) Circuit 

P.13A-493

.

.

TECHNICAL DESCRIPTION

• ENGINE-ECU checks the accelerator pedal posi-

tion sensor output signal characteristics for 
abnormal conditions.

.

Check Condition

• Ignition switch is "ON" position.

• Battery voltage is above 6.5 volt.

Judgement Criteria

• Difference in voltage between APS(main) and 

APS(sub) is above 0.215 volt for 0.24 sec.
or

• Difference in voltage between APS(main) and 

APS(sub) is above 0.273 volt for 0.24 sec.
or

• Difference in voltage between APS(main) and 

APS(sub) is above 1.133 volt for 0.24 sec.

• MIL activated immediately.

• Engine speed limited to 1200rpm and power 

restricted.

.

EOBD DRIVE CYCLE PATTERN

None.

.

TROUBLESHOOTING HINTS (The most 
likely causes for this code to be set are:)

• Accelerator pedal position sensor failed.

• Harness damage in accelerator pedal position 

sensor circuit or connector damage.

• Refer to component locations GROUP-

70

• Refer to configuration diagrams GROUP-

80

• Refer to circuit diagrams GROUP-

90

DIAGNOSIS

Required Special Tools:

• : Diagnostic tool (MUT-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: USB Cable

• MB991910: Main Harness A