Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 382
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-47
CIRCUIT OPERATION
This is the stoplight switch input signal circuit.
The signal is sent to the stoplight switch from multi-
purpose fuse 3, and is then sent to the auto-cruise
control-ECU.
TECHNICAL DESCRIPTION (COMMENT)
The cause is probably a malfunction of the stoplight
switch circuit.
TROUBLESHOOTING HINTS
•
Malfunction of the stoplight switch.
•
Damaged harness or connector.
•
Malfunction of the auto-cruise control-ECU.
DIAGNOSIS
Required Special Tool:
•
MB991223: Harness Set
STEP 1. Check if the stoplight illuminates.
Q: Is the stoplight illuminated?
YES : Go to Step 9.
NO : Go to Step 2.
AC003552 AK
CONNECTOR: C-03
AC001991AM
CONNECTOR: C-89
CONNECTOR
BLOCK (LH)
AC001996
JUNCTION BLOCK
(REAR VIEW)
CONNECTOR: C-110
AT
AC001451
CONNECTOR: C-20
AB
AC001995AU
CONNECTOR: C-107
JUNCTION BLOCK
(FRONT VIEW)
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-48
STEP 2. Check the 12-Volt supply circuit voltage at
stoplight switch connector C-03.
(1) Disconnect stoplight switch connector C-03 and measure at
the harness side.
(2) Measure the voltage between terminal 2 and ground.
Q: Is the voltage approximately battery positive voltage?
YES : Go to Step 6.
NO : Go to Step 3.
STEP 3. Check stoplight switch connector C-03.
Q: Is the connector damaged?
YES : Repair or replace connector.
Refer to GROUP 00E, Harness Connector Inspection
.
Then check that the malfunction is eliminated.
NO : Go to Step 4.
1
2
3
4
ACX01922AC
STOPLIGHT SWITCH
CONNECTOR: C-03
AC003552 AK
CONNECTOR: C-03
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-49
STEP 4. Check intermediate connector C-89 and junction
connector C-107 and C-110.
Q: Is any connectors damaged?
YES : Repair or replace connector.
Refer to GROUP 00E, Harness Connector Inspection
.
Then check that the malfunction is eliminated.
NO : Go to Step 5.
STEP 5. Check the harness wire between fusible link No.2
and stoplight switch connector C-03.
Q: Is any harness wire between fusible link No.2 and
stoplight switch connector C-03 damaged?
YES : Repair the harness wire and then check that the
malfunction is eliminated.
NO : Check that the malfunction is eliminated.
If the malfunction is eliminated, replace the auto-
cruise control-ECU. (Refer to
.)
Then check that the malfunction is eliminated.
AC001991AM
CONNECTOR: C-89
CONNECTOR
BLOCK (LH)
AC001995AU
CONNECTOR: C-107
JUNCTION BLOCK
(FRONT VIEW)
AC001996
JUNCTION BLOCK
(REAR VIEW)
CONNECTOR: C-110
AT
AC003552 AK
CONNECTOR: C-03
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-50
STEP 6. Check the stoplight switch.
(1) Disconnect harness connector C-03 at the stoplight switch.
(2) Connect an ohmmeter to the stoplight switch, and check
continuity when the plunger of the stoplight switch is
pushed in and when it is released.
(3) The stoplight switch is in good condition if the circuit is open
when the plunger is pushed in to a depth of within 4 mm
(0.2 inch) from the outer case edge surface, and if the
resistance value is less than 2 ohm when it is released.
(4) The check for continuity should be made at terminals 1 and
2 of the stoplight switch.
Q: Is the circuit open?
YES : Replace the stoplight switch.
Refer to GROUP 35A, Brake Pedal
Then check that the malfunction is eliminated.
NO : Go to Step 7.
STEP 7. Check stoplight switch connector C-03 and
intermediate connector C-89.
Q: Is any connector damaged?
YES : Repair or replace connector.
Refer to GROUP 00E, Harness Connector Inspection
.
Then check that the malfunction is eliminated.
NO : Go to Step 8.
AC001478
NO CONTINUITY CONTINUITY
4 mm (0.2 in)
AB
ACX02256AC
STOPLIGHT SWITCH
CONNECTOR: C-03
AC003552 AK
CONNECTOR: C-03
AC001991AM
CONNECTOR: C-89
CONNECTOR
BLOCK (LH)
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