Mitsubishi Lancer Evolution X. Manual — part 112
CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-35
STEP 15. Read the cruise control system DTC.
(1) Disconnect the negative (−) battery terminal, to erase the
DTC of the cruise control system.
(2) Connect the negative (−) battery cable.
(3) Turn the ignition switch to the "ON" position, and press the
"ON/OFF" switch to turn the cruise control system to ON
(turn on the "CRUISE" indicator light.)
(4) With the cruise control switches not operated, depress the
brake pedal for several seconds, and then read the DTC of
the cruise control system (Refer to
.)
Q: Is DTC 22 set?
YES : Replace the ECM [Refer to GROUP 13A, Engine
.] When the ECM is
replaced, register the encrypted code (Refer to
GROUP 42C, Diagnosis − ID Code Registration
Judgment Table
NO : 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
STEP 16. Using scan tool MB991958, check data list item
74: Brake light switch and item 89: Normally closed brake
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 74: Brake light switch.
• When the brake pedal is depressed, the display on
scan tool MB991958 should be "ON."
• When the brake pedal is released, the display on
scan tool MB991958 should be "OFF."
• Item 89: Normally closed brake switch.
• When the brake pedal is depressed, the display on
scan tool MB991958 should be "ON."
• When the brake pedal is released, the display on
scan tool MB991958 should be "OFF."
Q: Is the switch operating properly?
CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-36
STEP 17. Read the cruise control system DTC.
(1) Disconnect the negative (−) battery terminal, to erase the
DTC of the cruise control system.
(2) Connect the negative (−) battery cable.
(3) Turn the ignition switch to the "ON" position, and press the
"ON/OFF" switch to turn the cruise control system to ON
(turn on the "CRUISE" indicator light.)
(4) With the cruise control switches not operated, depress the
brake pedal for several seconds, and then read the DTC of
the cruise control system (Refer to
.)
Q: Is DTC 22 set?
YES : Return to Step 1.
NO : The procedure is complete.
DTC 23: ECM and Its Related Components
.
DTC SET CONDITIONS
This DTC is set when there is an failure in the ECM
and its related components.
.
TROUBLESHOOTING HINTS (THE MOST
LIKELY CAUSES FOR THIS CASE:)
• Malfunction of the MFI system.
• Malfunction of the ECM.
DIAGNOSTIC PROCEDURE
Required Special Tools:
• MB991958: Scan Tool (M.U.T.-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: M.U.T.-III USB Cable
• MB991910: M.U.T.-III Main Harness A
CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-37
STEP 1. Using scan tool MB991958, check for MFI system
DTC.
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) Connect scan tool MB991958 to the data link connector
(Refer to
.)
(2) Turn the ignition switch to the "ON" position.
(3) Check for MFI system DTC (Refer to GROUP 13A, MFI
Diagnosis − Diagnostic Function
.)
Q: Is any DTC set?
YES : Repair the MFI system (Refer to GROUP 13A, MFI
Diagnosis − Diagnostic Trouble Code Chart
.) Then go to Step 3.
NO : Go to Step 2.
STEP 2. Read the cruise control system DTC.
(1) Disconnect the negative (−) battery terminal, to erase the
DTC of the cruise control system.
(2) Connect the negative (−) battery terminal.
(3) Turn the ignition switch to the "ON" position, and press the
"ON/OFF" switch to turn the cruise control system to ON
(turn on the "CRUISE" indicator light.)
(4) After turning the cruise control system to ON, when 2
minutes or more has elapsed without operating the cruise
control switches, read the DTC of the cruise control system
(Refer to
.)
Q: Is DTC 23 set?
YES : Replace the ECM [Refer to GROUP 13A, Engine
.] When the ECM is
replaced, register the encrypted code (Refer to
GROUP 42C, Diagnosis − ID Code Registration
Judgment Table
NO : 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
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-38
STEP 3. Read the cruise control system DTC.
(1) Disconnect the negative (−) battery terminal, to erase the
DTC of the cruise control system.
(2) Connect the negative (−) battery terminal.
(3) Turn the ignition switch to the "ON" position, and press the
"ON/OFF" switch to turn the cruise control system to ON
(turn on the "CRUISE" indicator light.)
(4) After turning the cruise control system to ON, when 2
minutes or more has elapsed without operating the cruise
control switches, read the DTC of the cruise control system
(Refer to
.)
Q: Is DTC 23 set?
YES : Return to Step 1.
NO : The procedure is complete.
SYMPTOM CHART
M1172002301808
Symptom
Inspection
procedure
number
Reference page
Communication with
scan tool is not
possible
Communication with the ECM only is
impossible
−
GROUP 13A, MFI
Diagnosis,
Symptom
Procedures,
Inspection
Procedure 1
When the brake pedal is depressed, cruise control is not
cancelled.
1
When the clutch pedal is depressed, cruise control is not
cancelled <M/T.>
2
When the shift lever is moved to "N" position, cruise control is not
cancelled <TC-SST.>
3
When the "CANCEL" switch is pressed, cruise control is not
cancelled.
4
Cruise control cannot be set (No response "COAST/SET" switch
and "ACC/RES" switch is pressed.)
5
Hunting (repeated acceleration and deceleration) occurs at the
set vehicle speed.
6
When the "ON/OFF" switch is turned ON, "CRUISE" indicator
light does not illuminate (However, cruise control system is
normal.)
7
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