Mitsubishi Galant. Manual — part 152

MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-289

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-37

).

NO : If DTC P0705 is output again after the MFI-DTC has

been erased, replace the PCM. Then check that the
DTC P0705 does not reset.

DTC P0710 : Transmission Fluid Temperature Sensor Circuit Malfunction

TECHNICAL DESCRIPTION

•

When a malfunction of the fluid temperature
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

•

Oil temperature 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:)

•

Oil temperature sensor failed.

•

Open or shorted oil temperature sensor circuit, or
loose connector.

•

PCM failed.

DIAGNOSIS

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

AC003081 AB

16 PIN

MB991502

MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-290

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-37

).

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)

AC003081 AB

16 PIN

MB991502

MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-291

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-37

).

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)

AC003081 AB

16 PIN

MB991502

MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-292

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-37

).

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)

AC003081 AB

16 PIN

MB991502