Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 289

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-355

STEP 11. Check the sensor supply voltage at vehicle
speed sensor harness side connector B-39.
(1) Disconnect the vehicle speed sensor connector B-39 and

measure at the harness side.

(2) Disconnect the combination meter connector and auto-

cruise control-ECU connector.

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

•

Voltage should be between 4.8 and 5.2 volts.

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

Q: Is the voltage normal?

YES : Go to Step 12.
NO : Check connector B-36 at intermediate connector for

damage, and repair or replace as required. Refer to
GROUP 00E, Harness Connector Inspection (

P.00E-

2

). If intermediate connector is in good condition,

repair harness wire between vehicle speed sensor
connector B-39 terminal 3 and ECM connector C-62
terminal 80 because of short circuit to ground or
harness damage. Then go to Step 17.

STEP 12. Check the vehicle speed sensor.
Refer to GROUP 54, Combination Metre

−

Inspection

−

Vehicle

Speed Sensor Check (

P.54A-67

).

Q: Is the vehicle speed sensor normal?

YES : Go to Step 13.
NO : Replace the vehicle speed sensor. Then go to Step

17.

STEP 13. Check connector C-62 at ECM for damage.
Q: Is the connector in good condition?

YES : Go to Step 14.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection (

P.00E-2

). Then go to Step 17.

AKX01427AG

1

2

3

B-39 HARNESS
SIDE CONNECTOR

AK000310

CONNECTOR:C-62

AC

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-356

STEP 14. Check for harness damage between ignition
switch connector C-87 terminal 2 and vehicle speed
sensor connector B-39 terminal 1.
NOTE: Check harness after checking intermediate connectors
B-36, C-28, C-78, C-101 and C-104. If intermediate connectors
are damaged, repair or replace them. Refer to GROUP 00E,
Harness Connector Inspection (

P.00E-2

). Then go to Step 17.

Q: Is the harness wire in good condition?

YES : Go to Step 15.
NO : Repair it. Then go to Step 17.

STEP 15. Check for harness damage between vehicle
speed sensor connector B-39 terminal 3 and ECM
connector C-62 terminal 80.
NOTE: Check harness after checking intermediate connector
B-36 If intermediate connector is damaged, repair or replace
them. Refer to GROUP 00E, Harness Connector Inspection
(

P.00E-2

). Then go to Step 17.

Q: Is the harness wire in good condition?

YES : Go to Step 16.
NO : Repair it. Then go to Step 17.

AK000218AC

CONNECTOR:B-39

AK000219

CONNECTOR:C-87

AC

AK000218AC

CONNECTOR:B-39

AK000310

CONNECTOR:C-62

AC

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-357

STEP 16. Check for harness damage between vehicle
speed sensor connector B-39 terminal 2 and ground.
NOTE: Check harness after checking intermediate connector
B-36 If intermediate connector is damaged, repair or replace
them. Refer to GROUP 00E, Harness Connector Inspection
(

P.00E-2

). Then go to Step 17.

Q: Is the harness wire in good condition?

YES : Check for harness wire between vehicle speed

sensor connector B-39 terminal 3 and other system
because of short circuit to ground. Then go to Step
17.

NO : Repair it. Then go to Step 17.

STEP 17. Using scan tool MB991502, check data list item
24: Vehicle Speed Sensor.

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.
(3) Set scan tool MB991502 to the data reading mode for item

24, Vehicle Speed Sensor.

•

Check that the speedometer and MUT-II display speed
match when traveling at a vehicle speed of 40km/h
(25mph).

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

Q: Is the sensor operating properly?

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

DTC P0500: Vehicle Speed Sensor Malfunction <A/T>

TECHNICAL DESCRIPTION

•

When a malfunction of the vehicle 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

•

Vehicle 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:)

•

Vehicle speed sensor failed.

•

Open or shorted vehicle speed sensor circuit, or
loose connector.

•

PCM failed.

DIAGNOSIS

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

AK000218AC

CONNECTOR:B-39

AKX01177

16 PIN

MB991502

AB

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-358

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 P0500 is output again after the MFI-DTC has

been erased, replace the PCM. Then check that the
DTC P0500 does not reset.

AKX01177

16 PIN

MB991502

AB