Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 439

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-47

•

Voltage at pin 78 increases from around 0.7 volts
at closed throttle to about 5 volts at wide open
throttle.

DTC SET CONDITIONS
If the PCM output voltage is 4.8 volts or higher when
the engine is idling, the output is judged to be too
high and diagnostic trouble code number "11" is
output.

TROUBLESHOOTING HINTS (The most likely

causes for this code to be set:)

•

Malfunction of the throttle position sensor circuit

•

Damaged harness, connector

•

Malfunction of the PCM

DIAGNOSIS

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

STEP 1. Using scan tool MB991502, check data list item 11:
Throttle Position Sensor.

CAUTION

To prevent damage to scan tool MB991502, always turn the
ignition switch to "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 "ON" position.
(3) Set scan tool MB991502 to data reading mode for item 11:

Throttle Position Sensor.

•

With the throttle valve in idle position, voltage should be
between 535 and 735 mV.

•

With the throttle valve in full-open position, voltage
should be between 4,500 and 5,500 mV.

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

Q: Is the sensor operating properly?

YES : This malfunction is intermittent. Refer to GROUP 00,

How to Use Troubleshooting/Inspection Service
Points

−

How to Cope with Intermittent Malfunction

P.00-6

.

NO : Go to Step 2.

AC001252

MB991502

16 PIN

AB

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-48

STEP 2. Check the sensor output voltage at throttle
position sensor connector B-07 by backprobing.
(1) Do not disconnect connector B-07.
(2) Turn the ignition switch to "ON" position.

(3) Measure the voltage between terminal 3 and ground by

backprobing.

•

With the throttle valve in idle position, voltage should be
between 0.535 and 0.735 volts.

•

With the throttle valve in full-open position, voltage
should be between 4.5 and 5.5 volts.

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

Q: Is the voltage normal?

YES : Go to Step 3.
NO : Go to Step 7.

STEP 3. Check the sensor output voltage at PCM
connector C-57 <2.4L Engine> or C-59 <3.0L Engine> by
backprobing.
(1) Do not disconnect connector C-57 <2.4L Engine> or C-59

<3.0L Engine>.

(2) Turn the ignition switch to "ON" position.

(3) Measure the voltage between terminal 78 and ground by

backprobing.

•

With the throttle valve in idle position, voltage should be
between 0.535 and 0.735 volts.

•

With the throttle valve in full-open position, voltage
should be between 4.5 and 5.5 volts.

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

Q: Is the voltage normal?

YES : Go to Step 4.
NO : Go to Step 6.

AC001831AB

CONNECTOR: B-07

<2.4L ENGINE>

<3.0L ENGINE>

AC001548

B-07 CONNECTOR
HARNESS SIDE VIEW

AC

AC001657

CONNECTOR: C-57 <2.4L ENGINE> OR
C-59 <3.0L ENGINE>

AK

PCM

AC000847AD

C-57 <2.4L ENGINE> OR
C-59 <3.0L ENGINE>
CONNECTOR HARNESS
SIDE VIEW

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-49

STEP 4. Check connectors B-07 at throttle position sensor
and C-57 <2.4L Engine> or C-59 <3.0L Engine> at the PCM
for damage.
Q: Are the connectors in good condition?

YES : Go to Step 5.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

.

STEP 5. Using scan tool MB991502, check data list item 11:
Throttle Position Sensor.

CAUTION

To prevent damage to scan tool MB991502, always turn the
ignition switch to "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 "ON" position.
(3) Set scan tool MB991502 to the data reading mode for item

11: Throttle Position Sensor.

•

With the throttle valve in the idle position, voltage should
be between 535 and 735 mV.

•

With the throttle valve in the full-open position, voltage
should be between 4,500 and 5,500 mV.

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

Q: Is the sensor operating properly?

YES : This malfunction is intermittent. Refer to GROUP 00,

How to Use Troubleshooting/Inspection Service
Points

−

How to Cope with Intermittent Malfunction

P.00-6

.

NO : Replace the PCM.

AC001831AB

CONNECTOR: B-07

<2.4L ENGINE>

<3.0L ENGINE>

AC001657

CONNECTOR: C-57 <2.4L ENGINE> OR
C-59 <3.0L ENGINE>

AK

PCM

AC001252

MB991502

16 PIN

AB

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-50

STEP 6. Check connectors B-07 at throttle position sensor
and C-57 <2.4L Engine> or C-59 <3.0L Engine> at PCM for
damage.
Q: Are the connectors in good condition?

YES : Repair it because of harness damage between

throttle position sensor connector B-07 terminal 3 and
PCM connector C-57 <2.4L Engine> or C-59 <3.0L
Engine> terminal 78.

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

Connector Inspection

P.00E-2

.

STEP 7. Check connector B-07 at throttle position sensor
for damage.
Q: Is the connector in good condition?

YES : Go to Step 8.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

.

AC001831AB

CONNECTOR: B-07

<2.4L ENGINE>

<3.0L ENGINE>

AC001657

CONNECTOR: C-57 <2.4L ENGINE> OR
C-59 <3.0L ENGINE>

AK

PCM

AC001831AB

CONNECTOR: B-07

<2.4L ENGINE>

<3.0L ENGINE>