Mitsubishi Galant. Manual — part 151

MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-285

STEP 5. Check connector B-44 at power steering pressure
switch for damage.
Q: Is the connector in good condition?

YES : Go to Step 6.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection(

P.00E-2

). Then go to Step 14.

STEP 6. Check the power supply voltage at power steering
pressure switch harness side connector B-44.
(1) Disconnect the connector B-44 and measure at the harness

side.

(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 1 and ground.

•

Voltage should be battery positive voltage.

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

Q: Is the voltage normal?

YES : Go to Step 11.
NO : Go to Step 7.

STEP 7. Check the power supply voltage at PCM connector
C-40 by backprobing
(1) Do not disconnect the PCM connector C-40.
(2) Disconnect the power steering pressure switch connector

B-44.

(3) Turn the ignition switch to the "ON" position.
(4) Measure the voltage between terminal 52 and ground by

backprobing.

•

Voltage should be between battery positive voltage.

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

Q: Is the voltage normal?

YES : Go to Step 8.
NO : Go to Step 9.

ACX02520

CONNECTOR : B-44

AF

POWER
STEERING
PRESSURE
SWITCH

AK000260

B-44 HARNESS
SIDE CONNECTOR

1

AC

AK000309

C-40 CONNECTOR
HARNESS SIDE VIEW

46
57
66

45
56
65

44
55

43
49

54

64

42
48
59

41
47
58

53
63

52
62

51
61

50
60

AC

MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-286

STEP 8. Check connector C-40 at PCM for damage.
Q: Is the connector in good condition?

YES : Repair harness wire between power steering

pressure switch connector B-44 terminal 1 and PCM
connector C-40 terminal 52 because of open circuit.
Then go to Step 14.

NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection(

P.00E-2

). Then go to Step 14.

STEP 9. Check connector C-40 at PCM for damage.
Q: Is the connector in good condition?

YES : Go to Step 10.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection(

P.00E-2

). Then go to Step 14.

STEP 10. Check for short circuit to ground between power
steering pressure switch connector B-44 terminal 1 and
PCM connector C-40 terminal 52.
Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 14.
NO : Repair it. Then go to Step 14.

AK000280

CONNECTOR : C-40

PCM

AV

AK000280

CONNECTOR : C-40

PCM

AV

ACX02520

CONNECTOR : B-44

AF

POWER
STEERING
PRESSURE
SWITCH

AK000280

CONNECTOR : C-40

PCM

AV

MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-287

STEP 11. Replace the power steering pressure switch.
(1) Replace the power steering pressure switch.
(2) Check the trouble symptoms.
(3) Check the diagnostic trouble code (DTC).

Q: Is the DTC P0551 is output?

YES : Go to Step 12.
NO : Go to Step 14.

STEP 12. Check connector C-40 at PCM for damage.
Q: Is the connector in good condition?

YES : Go to Step 13.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection(

P.00E-2

). Then go to Step 14.

STEP 13. Check for harness damage between power
steering pressure switch connector B-44 terminal 1 and
PCM connector C-40 terminal 52.
Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 14.
NO : Repair it. Then go to Step 14.

ACX02520

CONNECTOR : B-44

AF

POWER
STEERING
PRESSURE
SWITCH

AK000280

CONNECTOR : C-40

PCM

AV

ACX02520

CONNECTOR : B-44

AF

POWER
STEERING
PRESSURE
SWITCH

AK000280

CONNECTOR : C-40

PCM

AV

MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-288

STEP 14. Using scan tool MB991502, check data list item
27: Power Steering Pressure Switch.

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) Start the engine and run at idle.
(3) Set scan tool MB991502 to the data reading mode for item

27, Power Steering Pressure Switch.

•

If the steering wheel is stopped while idling, "OFF" will
be displayed.

•

If the steering wheel is steered while idling, "ON" will be
displayed.

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

Q: Is the switch operating properly?

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

DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input)

TECHNICAL DESCRIPTION

•

When a malfunction of the park/neutral position
switch is detected, the transaxle control CPU in
the powertrain control module (PCM) outputs a
malfunction signal to the engine control CPU in
the PCM.

DTC SET CONDITIONS

Check Conditions, Judgment Criteria

•

Park/neutral position switch 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:)

•

Park/neutral position switch failed.

•

Open or shorted park/neutral position switch
circuit, or loose connector.

•

PCM failed.

DIAGNOSIS

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

AC003081 AB

16 PIN

MB991502