Mitsubishi 380. Manual — part 602

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-500

STEP 8. Check for harness damage between accelerator
pedal position sensor connector C-24 (terminal No. 1) and
ENGINE-ECU connector B-21 (terminal No. 81)
Q: Is the harness wire in good condition?

YES : Go to Step 9.
NO : Repair or replace it. Then go to Step 10.

ACCELERATOR
PEDAL

CONNECTOR: C-24

C-24 (B)

ACCELERATOR
PEDAL POSITION
SENSOR

HARNESS
CONNECTOR:
COMPONENT SIDE

16DB562A

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-501

STEP 9. Replace the accelerator pedal position sensor.
(1) Replace the accelerator pedal position sensor.
(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 P2127 set?

YES : Then go to Step 10.
NO : The inspection is complete.

STEP 10. 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 P2127 set?

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

ACCELERATOR
PEDAL

CONNECTOR: C-24

C-24 (B)

ACCELERATOR
PEDAL POSITION
SENSOR

HARNESS
CONNECTOR:
COMPONENT SIDE

16DB562A

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-502

DTC P2128: Accelerator Pedal Position Sensor (Sub) Circuit High Input.

.

CIRCUIT OPERATION

• A 5-volt power supply is applied on the accelera-

tor pedal position sensor (sub) power terminal
(terminal No. 6) from the ENGINE-ECU (terminal
No. 76).
The ground terminal (terminal No. 2) is grounded
with ENGINE-ECU (terminal No. 35).

.

TECHNICAL DESCRIPTION

• The accelerator pedal position sensor (sub) out-

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

• The ENGINE-ECU checks whether the voltage is

within a specified range.

.

DTC SET CONDITIONS

Check Conditions

• Ignition switch is "ON" position.

• Battery voltage is above 6.5 volt.

Judgement Criteria

• Accelerator pedal position sensor (sub) output

voltage is above 4.824 volts for 0.2 second.

• 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.

• Open accelerator pedal position sensor (sub) cir-

cuit.

• Short circuit to 5 volt.

• Harness 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

ACCELERATOR
PEDAL

CONNECTOR: C-24

C-24 (B)

ACCELERATOR
PEDAL POSITION
SENSOR

HARNESS
CONNECTOR:
COMPONENT SIDE

16DB562A

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-503

• MB991910: Main Harness A

STEP 1. Using diagnostic tool , check data list item 12:
Accelerator Pedal Position Sensor (sub).

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) Set diagnostic tool to the data reading mode for

item 12,

Accelerator Pedal Position Sensor (sub).

• Output voltage is between 0435 and 1035 mV when foot

is released from accelerator pedal.

• Output voltage is between 4000 - 4824 mV when accel-

erator pedal is fully depressed.

(4) Turn the ignition switch to the "LOCK"(OFF) position.

Q: Is the sensor operating properly?

YES : It can be assumed that this malfunction is intermittent.

Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points

− How to

Cope with Intermittent Malfunctions

P.00-14

.

NO : Go to Step 2.

STEP 2. Check harness connector C-24 at accelerator
pedal position sensor for damage.
Q: Is the harness connector in good condition?

YES : Go to Step 3.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 9.

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

ACCELERATOR
PEDAL

CONNECTOR: C-24

C-24 (B)

ACCELERATOR
PEDAL POSITION
SENSOR

HARNESS
CONNECTOR:
COMPONENT SIDE

16DB562A