Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 154

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-315

STEP 1. Using scan tool MB991502, read the A/T
diagnostic trouble code (DTC).

CAUTION

To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Check the A/T-DTC.
(4) Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is the A/T-DTC is output?

YES : Refer to GROUP 23A, Automatic Transaxle

Diagnosis

−

Diagnostic Trouble Code Chart (

P.23A-

45

).

NO : If DTC P0710 is output again after the MFI-DTC has

been erased, replace the PCM. Then check that the
DTC P0710 does not reset.

DTC P0715: Input/Turbine Speed Sensor Circuit Malfunction

TECHNICAL DESCRIPTION

•

When a malfunction of the input shaft speed
sensor is detected, the transaxle control CPU
inside the powertrain control module (PCM)
outputs a malfunction signal to the engine control
CPU in the PCM.

DTC SET CONDITIONS

Check Conditions, Judgment Criteria

•

Input shaft speed sensor failure signal is input to
the engine control CPU from the transaxle control
CPU. Both CPUs are in the PCM.

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

•

Input shaft speed sensor failed.

•

Open or shorted input shaft speed sensor circuit,
or loose connector.

•

PCM failed.

DIAGNOSIS

Required Special Tools
MB991502: Scan Tool (MUT-II)

AKX01177

16 PIN

MB991502

AB

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-316

STEP 1. Using scan tool MB991502, read the A/T
diagnostic trouble code (DTC).

CAUTION

To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Check the A/T-DTC.
(4) Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is the A/T-DTC is output?

YES : Refer to GROUP 23A, Automatic Transaxle

Diagnosis

−

Diagnostic Trouble Code Chart (

P.23A-

45

).

NO : If DTC P0715 is output again after the MFI-DTC has

been erased, replace the PCM. Then check that the
DTC P0715 does not reset.

DTC P0720: Output Speed Sensor Circuit Malfunction

TECHNICAL DESCRIPTION

•

When a malfunction of the output shaft speed
sensor is detected, the transaxle control CPU
inside the powertrain control module (PCM)
outputs a malfunction signal to the engine control
CPU in the PCM.

DTC SET CONDITIONS

Check Conditions, Judgment Criteria

•

Output shaft speed sensor failure signal is input
to the engine control CPU from the transaxle
control CPU.

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

•

Output shaft speed sensor failed.

•

Open or shorted output shaft speed sensor
circuit, or loose connector.

•

PCM failed.

DIAGNOSIS

Required Special Tools
MB991502: Scan Tool (MUT-II)

AKX01177

16 PIN

MB991502

AB

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-317

STEP 1. Using scan tool MB991502, read the A/T
diagnostic trouble code (DTC).

CAUTION

To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Check the A/T-DTC.
(4) Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is the A/T-DTC is output?

YES : Refer to GROUP 23A, Automatic Transaxle

Diagnosis

−

Diagnostic Trouble Code Chart (

P.23A-

45

).

NO : If DTC P0720 is output again after the MFI-DTC has

been erased, replace the PCM. Then check that the
DTC P0720 does not reset.

DTC P0725: Engine Speed Input Circuit Malfunction

TECHNICAL DESCRIPTION

•

When a malfunction of the crankshaft position
sensor is detected, the transaxle control CPU
inside the powertrain control module (PCM)
outputs a malfunction signal to the engine control
CPU in the PCM.

DTC SET CONDITIONS

Check Conditions, Judgment Criteria

•

Crankshaft position sensor failure signal is input
to the engine control CPU from the transaxle
control CPU.

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

•

Crankshaft position sensor failed.

•

Open or shorted crankshaft position sensor
circuit, or loose connector.

•

PCM failed.

DIAGNOSIS

Required Special Tools
MB991502: Scan Tool (MUT-II)

AKX01177

16 PIN

MB991502

AB

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-318

STEP 1. Using scan tool MB991502, read the A/T
diagnostic trouble code (DTC).

CAUTION

To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Check the A/T-DTC.
(4) Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is the A/T-DTC is output?

YES : Refer to GROUP 23A, Automatic Transaxle

Diagnosis

−

Diagnostic Trouble Code Chart (

P.23A-

45

).

NO : If DTC P0725 is output again after the MFI-DTC has

been erased, replace the PCM. Then check that the
DTC P0725 does not reset.

DTC P0740: Torque Converter Clutch System Malfunction

TECHNICAL DESCRIPTION

•

When a malfunction of the torque converter
clutch or its related system is detected, the
transaxle control CPU inside the powertrain
control module (PCM) outputs a malfunction
signal to the engine control CPU in the PCM.

DTC SET CONDITIONS

Check Conditions, Judgment Criteria

•

Failed signal of the torque converter clutch or its
related system is input to the engine control CPU
from the transaxle control CPU.

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

•

Torque converter clutch or its related system
failed.

•

Open or shorted torque converter clutch or its
related system circuit, or loose connector.

•

PCM failed.

DIAGNOSIS

Required Special Tools
MB991502: Scan Tool (MUT-II)

AKX01177

16 PIN

MB991502

AB