Mitsubishi Lancer Evolution X. Manual - part 47

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-213

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set
• MB992006: Extra Fine Probe

STEP 1. Check the wiring harness between ETACS-ECU 
connector C-301 and body ground for a short to ground. 
Measure the resistance at ETACS-ECU connector C-301.

CAUTION

Disconnect the negative battery terminal. For details refer 
to 

P.54C-7

.

CAUTION

A digital multimeter should be used. For details refer to 

P.54C-7

.

CAUTION

The test wiring harness should be used. For details refer to 

P.54C-7

.

(1) Disconnect ETACS-ECU connector C-301, and measure 

the voltage at the wiring harness side of ETACS-ECU 
connector.

(2) Measure the resistance between ETACS-ECU connector 

terminal 6 and body ground.

OK: 1 kΩ or more

(3) Measure the resistance between ETACS-ECU connector 

terminal 7 and body ground.

OK: 1 kΩ or more

Q: Do all the resistances measure 1 kΩ or more?

YES : Go to Step 2.
NO :  Go to Step 13.

AC608179

TEST 
HARNESS

Harness side: C-301

BL

AC608179

TEST 
HARNESS

Harness side: C-301

BM

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-214

STEP 2. Check the wiring harness between joint connector 
(CAN1) C-105 and combination meter connector C-04 for a 
short to ground. Measure the resistance at joint connector 
(CAN1) C-105.
(1) Disconnect joint connector (CAN1), and measure the 

resistance at the wiring harness side of joint connector 
(CAN1).

(2) Measure the resistance between joint connector (CAN1) 

terminal 3 and body ground.

OK: 1 kΩ or more

(3) Measure the resistance between joint connector (CAN1) 

terminal 14 and body ground.

OK: 1 kΩ or more

Q: Do all the resistances measure 1 kΩ or more?

YES (vehicles with KOS) : Go to Step 3.
YES (vehicles with WCM) : Go to Step 4.
NO (vehicles with KOS or WCM) : Go to Step 48.

AC608179

TEST 
HARNESS

Harness side: C-105

BY

AC608179

Harness side: C-105

BZ

TEST 
HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-215

STEP 3. Check the wiring harness between joint connector 
(CAN1) C-105 and KOS-ECU connector C-05 for a short to 
ground. Measure the resistance at joint connector (CAN1) 
C-105.
(1) Disconnect joint connector (CAN1), and measure the 

resistance at the wiring harness side of joint connector 
(CAN1).

(2) Measure the resistance between joint connector (CAN1) 

terminal 9 and body ground.

OK: 1 kΩ or more

(3) Measure the resistance between joint connector (CAN1) 

terminal 22 and body ground.

OK: 1 kΩ or more

Q: Do all the resistances measure 1 kΩ or more?

YES : Go to Step 5.
NO :  Go to Step 49.

AC608179

TEST 
HARNESS

Harness side: C-105

CA

AC608179

Harness side: C-105

CB

TEST 
HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-216

STEP 4. Check the wiring harness between joint connector 
(CAN1) C-105 and WCM connector C-07 for a short to 
ground. Measure the resistance at joint connector (CAN1) 
C-105.
(1) Disconnect joint connector (CAN1), and measure the 

resistance at the wiring harness side of joint connector 
(CAN1).

(2) Measure the resistance between joint connector (CAN1) 

terminal 7 and body ground.

OK: 1 kΩ or more

(3) Measure the resistance between joint connector (CAN1) 

terminal 20 and body ground.

OK: 1 kΩ or more

Q: Do all the resistances measure 1 kΩ or more?

YES : Go to Step 5.
NO :  Go to Step 50.

AC608179

TEST 
HARNESS

Harness side: C-105

CC

AC608179

Harness side: C-06

CD

TEST 
HARNESS