Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 136

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-243

STEP 10. Check the output circuit voltage at ECM
connector C-56 <M/T> or PCM connector C-57 <A/T>.
(1) Do not disconnect the ECM connector C-56 <M/T> or PCM

connector C-57 <A/T>.

(2) Turn the ignition switch to the "ON" position.
(3) Remove the fuel cap.
(4) Measure the voltage between terminal 61 <M/T> or terminal

92 <A/T> and ground by backprobing.

•

Voltage should be between 2.0 and 3.0 volts.

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

Q: Is the multi-meter reading within the specified value?

YES : Go to Step 18.
NO : Check connectors D-16, C-90, C-28, C-56 <M/T> or

C-57 <A/T> and repair or replace as required. Refer
to GROUP 00E, Harness Connector Inspection

P.00E-2

. If connectors D-16, C-90, C-28, C-56 <M/T>

or C-57 <A/T> are in good condition, check the
harness between intermediate connector D-16 and
ECM connector C-56 <M/T> or PCM connector C-57
<A/T> for open circuit or damage. Then repair if
necessary. Then go to Step 26.

STEP 11. Check the 5-volt supply circuit voltage at ECM
connector C-60 <M/T> or PCM connector C-54 <A/T>.
(1) Do not disconnect ECM connector C-60 <M/T> or PCM

connector C-54 <A/T>.

(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 81 <M/T> or terminal

46 <A/T> and ground by backprobing.

•

Voltage should be between 4.8 and 5.2 volts.

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

Q: Is the multi-meter reading within the specified value?

YES : Check connectors D-16, C-90, C-28, C-60 <M/T> or

C-54 <A/T> and repair or replace as required. Refer
to GROUP 00E, Harness Connector Inspection

P.00E-2

. If connectors D-16, C-90, C-28, C-60 <M/T>

or C-54 <A/T> are in good condition, check the
harness between intermediate connector D-16 and
ECM connector C-60 <M/T> or PCM connector C-54
<A/T> for open circuit or damage. Then repair if
necessary. Then go to Step 26.

NO : Go to Step 12.

AC002551AC

<M/T> C-56

<A/T> C-57

HARNESS SIDE
CONNECTOR

AC002552

HARNESS SIDE
CONNECTOR

<M/T> C-60

<A/T> C-54

AC

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-244

STEP 12. Check ECM connector C-60 <M/T> or PCM
connector C-54 <A/T> for damage.
(1) Disconnect ECM connector C-60 <M/T> or PCM connector

C-54 <A/T>.

Q: Is there any failure at ECM connector C-60 <M/T> or

PCM connector C-54 <A/T>?
YES : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 26.

NO : Go to Step 13.

STEP 13. Check the sensor power supply line for short
circuit to ground at ECM connector C-60 <M/T> or PCM
connector C-54 <A/T>.
(1) Disconnect ECM connector C-60 <M/T> or PCM connector

C-54 <A/T> and measure at the harness side.

(2) Check for the continuity between terminal 81 <M/T> or

terminal 46 <A/T> and ground.

•

There should be 2 ohms or more.

Q: Does the multi-meter reading exceed the specified

value?
YES : Replace ECM or PCM. Then go to Step 26.
NO : Go to Step 14.

STEP 14. Check the sensor power supply lines.
(1) Check all the sensor power supply lines for damage, which

flow through the harness ECM connector (terminal 81) <M/
T> or PCM connector (terminal 46) <A/T>.

Q: Is there any failure in the sensor power supply lines?

When a failure is found : Repair if necessary. (Refer to

GROUP 90, Circuit Diagrams

−

MFI System <M/T>

P.90-36

, <A/T>

P.90-46

. Then go to Step 26.)

AC001689

CONNECTOR: C-60 <M/T>, C-54 <A/T>

ECM <M/T>
OR
PCM <A/T>

AL

C-54
<A/T>

C-60
<M/T>

AC002553

HARNESS SIDE
CONNECTOR

<M/T> C-60

<A/T> C-54

AC

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-245

STEP 15. Check the ground circuit voltage at ECM
connector C-60 <M/T> or PCM connector C-54 <A/T>.
(1) Do not disconnect ECM connector C-60 <M/T> or PCM

connector C-54 <A/T>.

(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 92 <M/T> or 57 <A/

T> and ground by backprobing.

•

Voltage should be 0.5 volts or less.

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

Q: Is the multi-meter reading below the specified value?

YES : Check connectors D-16, C-90, C-28, C-60 <M/T> or

C-54 <A/T> and repair or replace as required. Refer
to GROUP 00E, Harness Connector Inspection

P.00E-2

. If connectors D-16, C-90, C-28, C-60 <M/T>

or C-54 <A/T> are in good condition, check the
harness between intermediate connector D-16 and
ECM connector C-60 <M/T> or PCM connector C-54
<A/T> for open circuit or damage. Then repair if
necessary. Then go to Step 26.

NO : Go to Step 16.

STEP 16. Check ECM connector C-60 <M/T> or PCM
connector C-54 <A/T> for damage.
(1) Disconnect ECM connector C-60 <M/T> or PCM connector

C-54 <A/T>.

Q: Is there any failure at ECM connector C-60 <M/T> or

PCM connector C-54 <A/T>?
YES : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 26.

NO : Go to Step 26.

AC002554 AC

<M/T> C-60

<A/T> C-54

HARNESS SIDE
CONNECTOR

AC001689

CONNECTOR: C-60 <M/T>, C-54 <A/T>

ECM <M/T>
OR
PCM <A/T>

AL

C-54
<A/T>

C-60
<M/T>

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-246

STEP 17. Check the harness between fuel tank differential
pressure sensor connector D-18 and intermediate
connector D-16 for open circuit or damage.
(1) Disconnect fuel tank differential pressure sensor connector

D-18 and intermediate connector D-16.

Q: Is there any failure between fuel tank differential

pressure sensor connector D-18 and intermediate
connector D-16?
YES : Repair it. Then go to Step 26.
NO : Check connectors D-18, D-16 and repair or replace

as required. Refer to GROUP 00e, Harness
Connector Inspection

P.00E-2

. Then go to Step 26.

STEP 18. Check ECM connector C-56 <M/T> or PCM
connector C-57 <A/T> for damage.
(1) Disconnect ECM connector C-56 <M/T> or PCM connector

C-57 <A/T>.

Q: Is there any failure at ECM connector C-56 <M/T> or

PCM connector C-57 <A/T>?
YES : Go to Step 26.
NO : Repair or replace it. Refer to GROUP 00e, Harness

Connector Inspection

P.00E-2

. Then go to Step 26.

AC002041AB

CONNECTOR: D-18

FUEL TANK DIFFERENTIAL
PRESSURE SENSOR

AC002549 AB

CONNECTOR: D-16

INTERMEDIATE
CONNECTOR

AC001689

CONNECTOR: C-56 <M/T>, C-57 <A/T>

ECM <M/T>
OR
PCM <A/T>

C-56 <M/T>,
C-57 <A/T>

AM