Mitsubishi Eclipse. Manual — part 785
AUTOMATIC TRANSAXLE DIAGNOSIS
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AUTOMATIC TRANSAXLE
23A-149
STEP 4. Measure the stoplight switch power supply
voltage at connector C-03 by backprobing.
(1) Remove the stoplight switch from the mounting bracket.
(2) Do not disconnect connector C-03.
(3) Measure the voltage between terminal 2 and ground by
backprobing.
• The voltage should measure battery positive voltage.
Q: Is the measured voltage battery positive voltage?
YES : Go to Step 7.
NO : Go to step 5.
STEP 5. Check stoplight switch connector C-03 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Are the connector and terminals in good condition?
YES : Go to Step 6.
NO : Repair or replace the damaged components. Refer to
GROUP 00E, Harness Connector Inspection
STEP 6. Check the harness for damage between stoplight
switch connector C-03 terminal 2 and the power supply
fuse.
Q: Is the harness wire in good condition?
YES : Go to Step 7.
NO : Repair or replace the harness wire.
AC001729
C-03
CONNECTOR: C-03
AV
2
1
3
4
AC201487AC
C-03 HARNESS
CONNECTOR:
HARNESS SIDE
AC001729
C-03
CONNECTOR: C-03
AV
AC001729
C-03
CONNECTOR: C-03
AV
AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-150
STEP 7. Measure the stoplight switch output voltage to the
PCM at connector C-03 by backprobing.
(1) Remove the stoplight switch from the mounting bracket.
(2) Do not disconnect connector C-03.
(3) Measure the voltage between terminal 1 and ground by
backprobing.
• When the switch button is out (closed circuit), voltage
should equal battery positive voltage.
• When the switch button is depressed (open circuit), volt-
age should measure less than 1.0 volt.
Q: Is the measured voltage battery positive voltage with
the switch button released (closed circuit), and less
than 1.0 volt with the switch button depressed (open
circuit)?
YES : Go to Step 9.
NO : Go to Step 8.
STEP 8. Check the stoplight switch.
Refer to GROUP 35A, On-vehicle Service
− Stoplight Switch
Check
Q: Does the stoplight switch pass the checks?
YES : Go to Step 9.
NO : Replace the stoplight switch. Refer to GROUP 35A,
Brake Pedal
AC001729
C-03
CONNECTOR: C-03
AV
3
2
1
4
AC201041AC
C-03 HARNESS
CONNECTOR:
HARNESS SIDE
ACX02208
BRAKE PEDAL
STOPLIGHT
SWITCH
AD
AUTOMATIC TRANSAXLE DIAGNOSIS
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AUTOMATIC TRANSAXLE
23A-151
STEP 9. Measure the stoplight switch output voltage at the
PCM connector C-61 <2.4L Engine> or C-63 <3.0L Engine>
by backprobing.
(1) Install the stoplight switch into the mounting bracket if it was
removed.
(2) Do not disconnect connector C-61 <2.4L Engine> or C-63
<3.0L Engine>.
(3) Measure the voltage between terminal 123 and ground by
backprobing.
• When the brake pedal is depressed, voltage should
measure battery positive voltage.
• When the brake pedal is not depressed, voltage should
measure less than 1.0 volt.
Q: Is the measured voltage battery positive voltage with
the brake pedal depressed (closed circuit), and less
than 1.0 volt with the brake pedal released (open
circuit)?
YES : Go to Step 12.
NO : Go to Step 10.
AC001657
CONNECTOR: C-61 <2.4L ENGINE> OR
C-63 <3.0L ENGINE>
PCM
BC
C-61 <2.4L ENGINE> OR C-63 <3.0L ENGINE>
AC001812AN
C-61 <2.4L ENGINE> OR
C-63 <3.0L ENGINE>
HARNESS CONNECTOR:
HARNESS SIDE
AUTOMATIC TRANSAXLE DIAGNOSIS
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AUTOMATIC TRANSAXLE
23A-152
STEP 10. Check PCM connector C-61 <2.4L Engine> or
C-63 <3.0L Engine>, intermediate connector C-28 and C-89
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 11.
NO : Repair or replace the damaged components. Refer to
GROUP 00E, Harness Connector Inspection
AC001657
CONNECTOR: C-61 <2.4L ENGINE> OR
C-63 <3.0L ENGINE>
PCM
BC
C-61 <2.4L ENGINE> OR C-63 <3.0L ENGINE>
AC106611AB
CONNECTOR: C-28
C-28
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