Mitsubishi Evolution X. Manual — part 218

AUTO-CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

17-41

INSPECTION PROCEDURE 2: When the Clutch Pedal is Depressed, Cruise Control System is not
Cancelled <M/T>.

AC709277

ENGINE
CONTROL
MODULE
(ECM)

CLUTCH
PEDAL
POSITION
SWITCH

WHITE-RED

BLACK

BLACK

BLACK

AB

Clutch Switch System Circuit

AC709196 AB

B-10 (GR)

Connector: B-10

ECM

Air cleaner

AC709197

Connector: C-49

AD

.

CIRCUIT OPERATION

This circuit indicates the operation status of the
clutch switch. When the clutch switch is ON (clutch
pedal is depressed), the voltage of ECM terminal
number 42 will indicate 0 volt.

.

COMMENT

The cause is probably a malfunction of the clutch
switch circuit.

.

TROUBLESHOOTING HINTS (THE MOST
LIKELY CAUSES FOR THIS CASE:)

• Damaged harness or connector.

• Malfunction of the clutch switch.

• Malfunction of the ECM

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: M.U.T.-III USB Cable

AUTO-CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

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• MB991910: M.U.T.-III Main Harness A

• MB991223: Harness Set

• MB992006: Extra Fine Probe

STEP 1. Using scan tool MB991958, check data list item 78:
Clutch switch.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

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

P.17-10

).

(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991958 to data reading mode for cruise

control system (Refer to

P.17-10

).

• Item 78: Clutch switch.

• When the clutch pedal is depressed, the display on

scan tool MB991958 should be "ON".

• When the clutch pedal 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 : Go to Step 6.
NO : Go to Step 2.

STEP 2. Check ECM connector B-10 and clutch switch
connector C-49 for loose, corroded or damaged terminals,
or terminals pushed back in the connector.
Refer to GROUP 00E, Harness Connector Inspection

P.00E-2

.

Q: Is the connector and terminals in good condition?

YES : Go to Step 3.
NO : Repair or replace the faulty connector. Then go to

Step 7.

STEP 3. Check the harness wire between ECM connector
B-10 terminal number 85 and clutch switch connector C-49
terminal number 2, between clutch switch connector C-49
terminal number 1 and ground for damage.

AC709275

AB

ETACS-ECU

Q: Is the harness wires in good condition?

YES : Go to Step 4.
NO : Repair the damaged harness wire. Then go to Step 7.

AUTO-CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

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STEP 4. Check the clutch switch.
(1) Disconnect clutch switch connector C-49.

AC602656AE

C-49 Clutch switch
connector

(2) Measure the continuity between the terminals.

Measurement
condition

Terminal
connector of
tester

Specified
condition

When clutch
pedal is
depressed.

1

− 2

Continuity
(less than 2
ohms)

When clutch
pedal is not
depressed.

1

− 2

Open circuit

(3) Connect clutch switch connector C-49.
Q: Is the clutch switch operating properly?

YES : Go to Step 5.
NO : Replace the clutch switch (Refer to GROUP 21A,

Clutch Pedal and Master Cylinder

P.21A-4

). Then go

to Step 7.

STEP 5. Using scan tool MB991958, check data list item 78:
Clutch switch.
(1) Connect scan tool MB991958 to the data link connector

(Refer to

P.17-10

).

(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991958 to data reading mode for cruise

control system (Refer to

P.17-10

).

• Item 78, Clutch switch.

• When the clutch pedal is depressed, the display on

scan tool MB991958 should be "ON".

• When the clutch pedal 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 : Go to Step 6.
NO : Replace the ECM [Refer to GROUP 13A, Engine

Control Module (ECM)

P.13A-920

]. When the ECM is

replaced, register the encrypted code (Refer to
GROUP 42C, Diagnosis

− ID Code Registration

Judgment Table

P.42C-9

). Then go to Step 7.

AUTO-CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

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STEP 6. Check the symptoms
Q: When the brake pedal is depressed, cruise control

system is cancelled?
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

P.00-15

).

NO : Replace the ECM [Refer to GROUP 13A, Engine

Control Module (ECM)

P.13A-920

]. When the ECM is

replaced, register the encrypted code (Refer to
GROUP 42C, Diagnosis

− ID Code Registration

Judgment Table

P.42C-9

). Then go to Step 7.

STEP 7. Check the symptoms.
Q: When the brake pedal is depressed, cruise control

system is cancelled?
YES : The procedure is complete.
NO : Return to Step 1.

INSPECTION PROCEDURE 3: When the Shift Lever is Moved to "N" Position, Cruise Control System
is not Cancelled <TC-SST>.

.

CIRCUIT OPERATION

When the shift lever is in the "N" position, the signal
is transmitted from the shift lever ECU to the ECM
via CAN bus line.

.

COMMENT

• Malfunction of CAN bus line.

• Malfunction of shift lever system.

.

TROUBLESHOOTING HINTS (THE MOST
LIKELY CAUSES FOR THIS CASE:)

• Malfunction of CAN bus system.

• Damaged harness or connector.

• Malfunction of the shift lever system.

• Malfunction of the shift lever ECU.

• Malfunction of the ECM.

DIAGNOSIS

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