Mitsubishi Evolution X. Manual — part 212
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-17
STEP 2. Measure the power supply voltage at cruise
control switch connector C-201 by backprobing.
(1) With the harness connector, remove the cruise control
switch (Refer to
(2) Connect the negative (
−) battery cable.
(3) Do not disconnect cruise control switch connector C-201.
(4) Turn the ignition switch to the "ON" position.
(5) Do not operate the cruise control switch.
AC601563 AD
C-201 Harness connector:
Harness side
(6) Measure the power supply voltage between cruise control
switch connector C-201 terminal number 3 and ground by
backprobing.
(7) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage between 4.7 and 5.0 volts?
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-18
STEP 3. Measure the power supply voltage at ECM
connector B-10.
(1) Remove the ECM [Refer to GROUP 13A, Engine Control
Module (ECM)
AC709266AB
82 81 80 79 78 77 76 75 74 73 72 71
94 93 92 91 90 89 88 87 86 85 84 83
99 98 97 96 95
100
101
102
103
104
105
106
112
113
114
109 108
107
110
111
115
116
117
118
MB992110
ECM
B-10 (GR)
Special tool 48-pin connector
(2) Connect special tool MB992110 between the ECM and the
body-side harness connector.
(3) Turn the ignition switch to the "ON" position.
(4) Do not operate the cruise control switch.
AC709268AB
Special tool 48-pin connector:
Component side
(5) Measure the power supply voltage between special tool
48-pin connector terminal number 107 (ECM connector
B-10 terminal number 107) and ground.
(6) Turn the ignition switch to the "LOCK" (OFF) position.
(7) Disconnect special tool MB992110 between the ECM and
the body-side harness connector.
(8) Install the ECM [Refer to GROUP 13A, Engine Control
Module (ECM)
Q: Is the measured voltage between 4.7 and 5.0 volts?
YES : Go to Step 6.
NO : Go to Step 4.
STEP 4. Check ECM connector B-10 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Refer to GROUP 00E, Harness Connector Inspection
Q: Is the connector and terminals in good condition?
YES : Go to Step 5.
NO : Repair or replace the faulty connector. Install the
cruise control switch (Refer to
). Then go to
Step 21.
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-19
STEP 5. Check the harness for short circuit to ground
between the ECM connector B-10 terminal number 107 and
the cruise control switch connector C-201 terminal number
3.
(1) Disconnect ECM connector B-10 and measure at the
harness connector side.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
AC601566 AD
B-10 Harness connector:
Component side
(3) Measure the continuity between ECM connector B-10
terminal number 107 and ground.
(4) Reconnect ECM connector B-10.
Q: Is the measured continuity open circuit?
YES : Install the cruise control switch (Refer to
Then go to Step 19.
NO : Go to Step 6.
STEP 6. Check intermediate connector C-130, cruise
control switch connector C-201 and clock spring
connectors C-202 and C-205 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Refer to GROUP 00E, Harness Connector Inspection
Q: Is the connectors and terminals in good condition?
YES : Go to Step 7.
NO : Repair or replace the faulty connector. Install the
cruise control switch (Refer to
). Then go to
Step 21.
STEP 7. Check the harness wire between ECM connector
B-10 terminal number 107 and cruise control switch
connector C-201 terminal number 3 for damage.
Q: Is the harness wires in good condition?
YES : Go to Step 8.
NO : Repair the damaged harness wire. Install the cruise
control switch (Refer to
). Then go to Step 21.
STEP 8. Check the clock spring.
Refer to GROUP 52B, Driver’s Air Bag Module Inspection
.
Q: Is the clock spring in good condition?
YES : Go to Step 9.
NO : Replace the clock spring (Refer to GROUP 52B,
Driver’s Air Bag Module and Clock Spring
). Install the cruise control switch (Refer to
). Then go to Step 21.
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-20
STEP 9. Using scan tool MB991958, check data list item 75:
Cancel switch, item 86: Main switch, item 91: Resume
switch and item 92: Set switch.
(1) Connect scan tool MB991958 to the data link connector
(Refer to
).
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991958 to data reading mode for cruise
control system (Refer to
).
• Item 75: Cancel switch.
• When "CANCEL" switch is pressed, the display on
scan tool MB991958 should be "ON".
• When "CANCEL" switch is released, the display on
scan tool MB991958 should be "OFF".
• Item 86: Main switch.
• When "ON/OFF" switch is pressed, the display on
scan tool MB991958 should be "ON".
• When "ON/OFF" switch is pressed again, the display
on scan tool MB991958 should be "OFF".
• Item 91: Resume switch.
• When "ACC/RES" switch is pressed, the display on
scan tool MB991958 should be "ON".
• When "ACC/RES" switch is released, the display on
scan tool MB991958 should be "OFF".
• Item 92: Set switch.
• When "COAST/SET" switch is pressed, the display
on scan tool MB991958 should be "ON".
• When "COAST/SET" switch is released, the display
on scan tool MB991958 should be "OFF".
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect scan tool MB991958.
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
). Install
the cruise control switch (Refer to
).
NO : Return to Step 2.
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