Mitsubishi Montero (2002-2004). Manual — part 838
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-15
STEP 3. Check the auto-cruise control switch.
(1) Disconnect auto-cruise control switch
(2) Measure the resistance between terminal 2 and terminal 3
when each of the "SET", "RESUME", "CANCEL" and MAIN
switch is pressed.
Q: Is the resistance within specifications?
YES : Go to Step 4.
NO : Replace the auto-cruise control switch. Refer to
, Auto-cruise Control.
STEP 4. Measure the auto-cruise control switch power
supply voltage at connector D-227 by backprobing.
(1) Do not disconnect connector D-227.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 2 and ground by
backprobing.
• When "SET" switch is at the ON position, voltage should
measure between 2.1 and 2.7 volts.
• When "RESUME" switch is at the ON position, voltage
should measure between 3.3 and 4.0 volts.
Q: Is the measured voltage within specifications?
YES : Go to Step 5.
NO : Go to step 6.
SWITCH POSITION
SPECIFIED CONDITION
MAIN switch "OFF"
Open circuit
MAIN switch "ON"
Less than 2 ohms
"CANCEL" switch ON
Approximately 100
Ω
"RESUME" switch ON
Approximately 887
Ω
"SET" switch ON
Approximately 300
Ω
1 2 3
AC203822AB
OFF
OFF
OFF
OFF
ON
ON
ON
ON
CAN
MAIN
RES
SET
2
3
AC205038AB
D-227
CONNECTOR: D-227
1 2 3
AC205053AB
D-227 HARNESS
CONNECTOR:
HARNESS SIDE
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-16
STEP 5. Using scan tool MB991502, check data list item 02:
Set Switch, item 03: Resume Switch.
CAUTION
To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991502 to data reading mode for auto-
cruise control system item 02, Set Switch.
• When "SET" switch is at the ON position, the display on
scan tool MB991502 should be "ON."
• When "SET" switch is at the OFF position, the display
on scan tool MB991502 should be "OFF."
(4) Set scan tool MB991502 to data reading mode for auto-
cruise control system item 03, Resume Switch.
• When "RESUME" switch is at the ON position, the dis-
play on scan tool MB991502 should be "ON."
• When "RESUME" switch is at the OFF position, the dis-
play on scan tool MB991502 should be "OFF."
(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the switch operating properly?
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
NO : Replace the PCM. Refer to
, Auto-cruise
Control.
ACX02258AC
MB991502
16-PIN
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-17
STEP 6. Check auto-cruise control switch connector D-
227, intermediate connector D-230, clock spring connector
D-226, clock spring connector D-205, intermediate
connector E-110 and PCM connector D-135 for looser,
corroded or damaged terminals, or terminals pushed back
in the connector.
1 2 3
5
4
6
AC205037
2
1
3
CONNECTORS: D-205, D-226, D-227, D-230
D-227
D-226
D-205(B)
D-227
D-226
D-205
D-230(B)
D-230
AB
AC205045
6
1
7
2
9
8
10
3
5
12
11
4
1314
E-110
CONNECTOR: E-110
AB
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-18
Q: Are the connectors and terminals in good condition?
YES : Go to Step 7.
NO : Repair or replace the damaged components. Refer to
GROUP 00E, Harness Connector Inspection
STEP 7. Check the clock spring.
Refer to GROUP 52B, Air Bag Modules and Clock Spring
Q: Is the clock spring operating properly?
YES : Go to Step 8.
NO : Replace the clock spring. Refer to GROUP 52B, Air
Bag Modules and Clock Spring
.
AC205039
CONNECTOR: D-135
D-135(GR)
PCM
AB
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