Mitsubishi Evolution X. Manual - part 1068

ETACS

TSB Revision

CHASSIS ELECTRICAL

54A-633

258

RR door ajar switch

Rear right door: Open

Open

Rear right door: Closed

Close

259

RR door ajar switch

Rear left door: Open

Open

Rear left door: Closed

Close

260

Trunk/gate trunk ajar switch

Trunk lid: Open

Open

Trunk lid: Closed

Close

264

Handle lock switch

When the ignition key is 
inserted into the ignition key 
cylinder

Key in

When the ignition key is 
removed from the ignition key 
cylinder

Key out

265

Hazard switch

While the hazard switch is 
pressed

ON

Other than above

OFF

266

Hood switch

Hood: Open

ON

Hood: Closed

OFF

268

Trunk/gate opener switch

Not used

OFF

270

Dr door lock switch

When the driver's door is locked Lock
Other than above

Not lock

271

Dr door unlock switch

When the driver's door is 
unlocked

Unlock

Other than above

Not Unlock

272

As door unlock switch

When the front passenger's 
door is unlocked

Unlock

Other than above

Not Unlock

273

Except Dr/As door unlock switch

Not used

OFF

274

Door key lock switch

Not used

OFF

275

Dr door key unlock switch

Not used

OFF

276

Door key unlock switch

Not used

OFF

277

Power lock switch

Not used

OFF

278

Power unlock switch

Not used

OFF

279

Brake fluid switch

When the brake fluid level is 
normal

ON

When the brake fluid level is low OFF

281

ASC/TCL OFF switch

ASC OFF switch: During ON 
operation

ON

Other than above

OFF

287

Starter switch

Ignition switch: START position ON
Ignition switch: Other than the 
START position

OFF

Item No. Display on M.U.T.-III

Check conditions

Normal conditions

ETACS

TSB Revision

CHASSIS ELECTRICAL

54A-634

288

ACC switch

Ignition switch: ACC or ON

ON

Ignition switch: Other than ACC 
or ON

OFF

289

Backup light or shift reveres SW

The shift lever is in the reverse 
position.

ON

Other than above

OFF

290

Stoplight switch

Brake pedal depressed

ON

Other than above

OFF

291

Front wiper auto stop switch

When the windshield wiper is in 
operation

ON

Other than above

OFF

293

Process error information

−

−

294

Process error counter

−

0

−255 times

340

Headlight switch(tail)

Lighting switch: Position light 
position

ON

Other than above

OFF

341

Headlight switch

Lighting switch: Headlight 
position

ON

Other than above

OFF

342

Headlight switch(Dimmer)

Lighting switch: During dimmer 
switch operation

ON

Other than above

OFF

343

Turn switch left

Turn-signal light switch: LH 
position

ON

Other than above

OFF

344

Turn switch right

Turn-signal light switch: RH 
position

ON

Other than above

OFF

345

Fog light ON

Fog light switch: During ON 
operation

ON

Other than above

OFF

346

Fog light OFF

Fog light switch: During OFF 
operation

ON

Other than above

OFF

347

Switch type

−

LHD

348

Headlight switch(auto)

Lighting switch: AUTO position

ON

Other than above

OFF

349

Headlight cleaner

Not used

OFF

350

Headlight switch(flasher)

Lighting switch: During dimmer 
switch operation

ON

Other than above

OFF

Item No. Display on M.U.T.-III

Check conditions

Normal conditions

ETACS

TSB Revision

CHASSIS ELECTRICAL

54A-635

TROUBLE SYMPTOM CHART

M1545001200111

351

Column ECU sleep

Ignition switch: Other than ON 
or START position

OK

Ignition switch: ON or START 
position

NG

352

Front wiper(INT)

Wiper switch: INT position

ON

Other than above

OFF

353

Front wiper(LO)

Wiper switch: LO position

ON

Other than above

OFF

354

Front wiper(HI)

Wiper switch: HI position

ON

Other than above

OFF

355

Front wiper(washer)

Wiper switch: During washer 
operation

ON

Other than above

OFF

356

Rear wiper

Not used

OFF

357

Rear wiper(washer)

Not used

OFF

358

Front wiper(MIST)

Wiper switch: During MIST 
operation

ON

Other than above

OFF

359

Front wiper(interval volume)

Variable intermittent wiper 
control switch is switched from 
(+) to (

−).

The value changes 
from 0 (+) to 254 (

−).

360

Wiper switch lever fail

When normal

No fail

When abnormality is present

Fail

361

Turn/Light switch lever fail

When normal

No fail

When abnormality is present

Fail

Item No. Display on M.U.T.-III

Check conditions

Normal conditions

Trouble symptom

Reference page

Malfunction of ETACS-ECU power supply circuit

P.54A-636

ETACS

TSB Revision

CHASSIS ELECTRICAL

54A-636

SYMPTOM PROCEDURES

Malfunction of ETACS-ECU power supply circuit

.

TECHNICAL DESCRIPTION (COMMENT)

If the ETACS-ECU functions do not work at all, the 
ETACS-ECU power supply system, ground system, 
or ETACS-ECU may have a problem.

.

TROUBLESHOOTING HINTS

• The wiring harness or connectors may have 

loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector

• The ETACS-ECU may be defective

ETACS-ECU Power Supply Circuit

FUSIBLE
LINK

36

FUSIBLE
LINK

34

ETACS-ECU

RELAY BOX

ENGINE
COMPARTMENT

AC708972AZ

Connectors: C-307, C-309, C-315, C-317

ETACS-ECU

C-309 (B)

C-307 (B)

C-315

C-317