Mitsubishi Eclipse. Manual - part 761

AUTOMATIC TRANSAXLE DIAGNOSIS

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AUTOMATIC TRANSAXLE

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STEP 17. Check the harness for damage between TP
sensor connector B-07 terminal 3 and PCM connector C-57
<2.4L Engine> or C-59 <3.0L Engine> terminal 78.
Q: Is the harness wire in good condition?

YES : Go to Step 18.
NO : Repair or replace the harness wire.

STEP 18. Check the harness for damage between TP
sensor connector B-07 terminal 1 and PCM connector C-57
<2.4L Engine> or C-59 <3.0L Engine> terminal 57.
Q: Is the harness wire in good condition?

YES : Adjust the TP sensor. Refer to GROUP 13A <2.4L

Engine>, On-vehicle Service

− TP Sensor Adjustment

P.13A-927

or 13B <3.0L Engine>, On-vehicle Service

− TP Sensor Adjustment

P.13B-1103

NO : Repair or replace the harness wire.

AC001831AF

CONNECTOR: B-07

<2.4L ENGINE>

<3.0L ENGINE>

B-07

AC001657

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

PCM

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

AC001831AF

CONNECTOR: B-07

<2.4L ENGINE>

<3.0L ENGINE>

B-07

AC001657

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

PCM

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

AUTOMATIC TRANSAXLE DIAGNOSIS

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AUTOMATIC TRANSAXLE

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DTC 12: TP Sensor System (Open Circuit)

TP Sensor System Circuit
Refer to

P.23A-43

CIRCUIT OPERATION
Refer to

P.23A-43

DTC SET CONDITIONS
If the TP sensor output voltage is less than 0.2 volt
when the engine is not at idle, the output is judged to
be too low and DTC 12 is set.

TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are:)

• Malfunction of the TP sensor circuit

• Damaged harness, connector

• Malfunction of the PCM

DIAGNOSIS

Required Special Tool:

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: MUT-III USB Cable

• MB991911: MUT-III Main Harness B

STEP 1. Using scan tool MB991958, check data list item 11:
TP Sensor.

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991958 to data reading mode for item 11:

TP Sensor.

• With the throttle valve in the idle position, voltage should

measure between 535 and 735 mV.

• With the throttle valve in the full-open position, voltage

should measure between 4,500 and 5,500 mV.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage between 535 and 735 mV at

idle, and between 4,500 and 5,500 mV in the full-open
position?
YES : It can be assumed that 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.

AC303127

MB991911

16-PIN

MB991827

MB991824

AUTOMATIC TRANSAXLE DIAGNOSIS

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AUTOMATIC TRANSAXLE

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

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

backprobing.

• With the throttle valve in the idle position, voltage should

measure between 0.535 and 0.735 volts.

• With the throttle valve in the full-open position, voltage

should measure between 4.5 and 5.5 volts.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage between 0.535 and 0.735 volt at

idle, and between 4.5 and 5.5 volts in the full-open
position?
YES : Go to Step 3.
NO : Go to Step 8.

STEP 3. Measure the TP 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 the "ON" position.

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

backprobing.

• With the throttle valve in the idle position, voltage should

measure between 0.535 and 0.735 volts.

• With the throttle valve in the full-open position, voltage

should measure between 4.5 and 5.5 volts.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage between 0.535 and 0.735 volt at

idle, and between 4.5 and 5.5 volts in the full-open
position?
YES : Go to Step 4.
NO : Go to Step 6.

AC001831AF

CONNECTOR: B-07

<2.4L ENGINE>

<3.0L ENGINE>

B-07

AC001548AJ

B-07 HARNESS
CONNECTOR:
HARNESS SIDE

AC001657

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

PCM

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

AC000847

C-57 (GR) <2.4L ENGINE>
OR
C-59 (GR) <3.0L ENGINE>
HARNESS CONNECTOR:
HARNESS SIDE

AUTOMATIC TRANSAXLE DIAGNOSIS

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STEP 4. Check TP sensor connector B-07 and PCM
connector C-57 <2.4L Engine> or C-59 <3.0L Engine> for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Are the connectors and terminals in good condition?

YES : Go to Step 5.
NO : Repair or replace the damaged components. Refer to

GROUP 00E, Harness Connector Inspection

P.00E-2

AC001831AF

CONNECTOR: B-07

<2.4L ENGINE>

<3.0L ENGINE>

B-07

AC001657

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

PCM

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

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