Mitsubishi Lancer Evolution X. Manual - part 111

 

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Mitsubishi Lancer Evolution X. Manual - part 111

 

 

CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-31

STEP 3. Using scan tool MB991958, check ETACS system 
data list item 290: Brake light 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 ETACS 

system (Refer to GROUP 54A, ETACS, Troubleshooting − 

Data List Reference Table 

P.54A-694

.)

• Item 290: 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".

Q: Is the switch operating properly?

YES : Replace the ECM [Refer to GROUP 13A, Engine 

Control Module (ECM) 

P.13A-888

.] 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 16.

NO :  Go to Step 4.

STEP 4. Check stoplight switch connector C-48, and 
ETACS-ECU connector C-304 and C-312, 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 terminal in good condition?

YES : Go to Step 5.
NO :  Repair or replace the damaged connector. Then go to 

Step 16.

STEP 5. Check the harness wire between ETACS-ECU 
connector C-304 terminal number 1 and stoplight switch 
connector C-48 terminal number 2, and between stoplight 
switch connector C-48 terminal number 1 and ETACS-ECU 
connector C-312 terminal number 16, for damage.

• Check harness wire for open/short circuit and damage.

Q: Is the harness wire in good condition?

YES : Go to Step 6.
NO :  Repair or replace the damaged harness wire. Then go 

to Step 16.

CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-32

STEP 6. Check fuse number 2 at the ETACS-ECU.
Q: Is the fuse in good condition?

YES : Go to Step 7.
NO :  Check the stoplight system harness and replace the 

fuse. Then go to Step 16.

STEP 7. Check the stoplight switch.
Refer to GROUP 35A, Brake Pedal, Inspection − Stoplight 

Switch Check 

P.35A-25

.

Q: Is the stoplight switch operating properly?

YES : Go to Step 8.
NO :  Replace the stoplight switch (Refer to GROUP 35A, 

Brake Pedal 

P.35A-24

.) Then go to Step 16.

STEP 8. Using scan tool MB991958, check ETACS system 
data list item 290: Brake light 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 ETACS 

system (Refer to GROUP 54A, ETACS − Data List 

Reference Table 

P.54A-694

.)

• Item 290: 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".

Q: Is the switch operating properly?

YES : Go to Step 9.
NO :  Replace the ETACS-ECU (Refer to GROUP 54A, 

ETACS, ETACS-ECU 

P.54A-742

.) Then go to Step 

16.

AC709274

AB

ETACS-ECU

Fuse number 2
(Housing color: Blue)

Brake pedal

CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-33

STEP 9. Using scan tool MB991958, check data list item 74: 
Brake light 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 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."

Q: Is the switch operating properly?

YES : Go to Step 10.
NO :  Replace the ECM [Refer to GROUP 13A, Engine 

Control Module (ECM) 

P.13A-888

.] 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 16.

STEP 10. Using scan tool MB991958, check data list item 
89: Normally closed brake 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 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?

YES : Go to Step 15.
NO :  Go to Step 11.

STEP 11. Check ECM connector B-10 and stoplight switch 
connector C-48, 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 terminal in good condition?

YES : Go to Step 12.
NO :  Repair or replace the damaged connector. Then go to 

Step 16.

CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

17-34

STEP 12. Check the harness wire between ECM connector 
B-109 terminal number 108 and stoplight switch connector 
C-32 terminal number 3, and between stoplight switch 
connector C-32 terminal number 4 and body ground, for 
damage.

• Check harness wire for open/short circuit and damage.

Q: Is the harness wire in good condition?

YES : Go to Step 13.
NO :  Repair or replace the damaged harness wire. Then go 

to Step 16.

STEP 13. Check the stoplight switch.
Refer to GROUP 35A, Brake Pedal, Inspection − Stoplight 

Switch Check 

P.35A-25

.

Q: Is the stoplight switch operating properly?

YES : Go to Step 14.
NO :  Replace the stoplight switch (Refer to GROUP 35A, 

Brake Pedal 

P.35A-24

.) Then go to Step 16.

STEP 14. Using scan tool MB991958, check data list item 
89: Normally closed brake 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 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?

YES : Go to Step 15.
NO :  Replace the ECM [Refer to GROUP 13A, Engine 

Control Module (ECM) 

P.13A-888

.] 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 16.

AC709275

AB

ETACS-ECU

 

 

 

 

 

 

 

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