Mitsubishi Eclipse. Manual — part 697
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-69
STEP 2. transmission range switch connector B-41.
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 3.
STEP 3. Check the circuit at the transmission range
switch.
(1) Disconnect the transmission range switch connector B-41.
(2) Measure the continuity transmission range switch
connector terminals.
Q: Is the continuity meet the table above?
YES : Go to Step 4.
NO : Replace the transmission range switch. Refer to
GROUP 23B, Transaxle
the malfunction is eliminated.
AC001482
CONNECTOR: B-41
DIPSTICK
AB
ITEM
TERMINAL CONNECTOR
OF TESTER
SPECIFIED
CONDITION
P
3
− 8, 9 − 10
Less than 2
ohms
N
4
− 8, 9 − 10
AC005865
P
R
N
D
3
2
L
AB
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-70
STEP 4. Check the output circuit voltage at auto-cruise
control-ECU connector C-20 (terminal number 13) by
backprobing.
(1) Do not disconnect auto-cruise control switch connector
C-20.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 13 and ground by
backprobing.
• Voltage should be battery positive voltage. (When select
lever is in a position other than "N" range.)
• Voltage should be 0.5 volt or less. (When select lever is
in "N" range.)
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the voltage within specifications?
YES : Check that the malfunction is eliminated. If the
malfunction is not eliminated, replace the auto-cruise
control-ECU (Refer to
.). Then check that the
malfunction is eliminated.
NO : Go to Step 5.
STEP 5. Check auto-cruise control-ECU connector C-20.
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 6.
STEP 6. Check intermediate connector C-28.
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 7.
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16
AC103109
C-20 CONNECTOR
HARNESS SIDE VIEW
AC
AC001451
CONNECTOR: C-20
AB
AC101201AB
CONNECTOR: C-28
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-71
STEP 7. Check the harness wire between transmission
range switch connector B-41 (terminal number 10) and
auto-cruise control-ECU connector C-20 (terminal number
13).
Q: Is any harness wire between transmission range switch
connector B-41 (terminal number 10) and auto-cruise
control-ECU connector C-20 (terminal number 13)
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 not eliminated, replace the auto-cruise
control-ECU (Refer to
.). Then check that the
malfunction is eliminated.
INSPECTION PROCEDURE 5: When the Auto-cruise Control "CANCEL" Switch is Set to ON,
Auto-cruise Control is not Cancelled.
.
TECHNICAL DESCRIPTION (COMMENT)
The cause is probably an open-circuit in the output in
the circuit inside the "CANCEL" switch.
.
TROUBLESHOOTING HINTS
• Malfunction of the auto-cruise control switch.
DIAGNOSIS
Replace the auto-cruise control switch. (Refer to
Then check the malfunction is eliminated.
INSPECTION PROCEDURE 6: Auto-cruise Control cannot be Set.
.
TECHNICAL DESCRIPTION (COMMENT)
The fail-safe function is probably cancelling
auto-cruise control. In this case, scan tool MB991958
can be used to check the trouble symptoms in each
system by checking the diagnostic trouble codes.
The scan tool can also be used to check if the cir-
cuits of each input switch are normal or not by check-
ing the input switch codes.
.
TROUBLESHOOTING HINTS
• Malfunction of the auto-cruise control switch.
• Malfunction of the auto-cruise control-ECU.
AC001482
CONNECTOR: B-41
DIPSTICK
AB
AC001451
CONNECTOR: C-20
AB
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-72
DIAGNOSIS
Required Special Tools:
• MB991958: Scan Tool (MUT-III sub assembly)
• MB991824: Vehicle Communication Interface
• MB991827: MUT-III USB Cable
• MB991911: MUT-III Main Harness B
• MB991223: Harness Set
STEP 1. Can the auto-cruise control-ECU communicate
with scan tool MB991958?
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) Using scan tool MB991958.
(2) Connect scan tool MB991958 to the data link connector.
(3) Turn the ignition switch to the "ON" position.
Q: Can the auto-cruise control-ECU communicate with the
scan tool?
YES : Go to Step 2.
NO : Inspect each trouble symptom. (Refer to Inspection
Procedure number 1
STEP 2. Is any diagnostic trouble code output?
Q: Is any diagnostic trouble code output?
YES : Diagnostic trouble code number 11, 12, 14, 15, 16 or
17 is output, refer to the following. (Code number 11
.) (Code number 12
.) <M/T> (Code
number 12
.) <A/T> (Code number 14
.) (Code number 15
.) (Code number
.) (Code number 17
.) Then check
that the malfunction is eliminated.
NO : Go to Step 3.
AC303127
AB
MB991911
16-PIN
MB991827
MB991824
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