Mitsubishi Lancer Evolution IX. Manual - part 113

DIAGNOSTIC TROUBLE CODE PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-15

DIAGNOSTIC TROUBLE CODE PROCEDURES

Diagnosis code 11: Trouble related to the ETACS-ECU

DIAGNOSIS CODE SET CONDITIONS

The ETACS-ECU monitors the data, which the ECU 
itself sends. If errors occur consecutively 15 times 
(for 0.6 seconds), a diagnosis code will be set. Then, 
if the data does not contain any errors consecutively 
15 times (for 0.6 seconds), the ECU will stop sending 
the diagnosis code.

POSSIBLE CAUSES

• Malfunction of the ETACS-ECU

DIAGNOSTIC PROCEDURE

Check whether the diagnosis code is reset.
(1) Erase the diagnosis code.
(2) Again check that diagnosis code No.11 is set.

Q: Is diagnosis code No.11 set?

YES : 

Replace the ETACS-ECU.

NO : 

The trouble can be an intermittent 
malfunction (Refer to GROUP 00 

− How to 

Cope with Intermittent Malfunction 

P.00-5

).

DIAGNOSTIC TROUBLE CODE PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-16

Diagnosis code 12: Trouble related to the column switch or improper connection to the ETACS-ECU

CAUTION

Whenever the ECU is replaced, ensure that the 
power supply circuit, the earthing circuit and the 
communication circuit are normal.

BATTERY

IGNITION
SWITCH (IG1)

COLUMN
SWITCH

Wire colour code
B : Black
LG : Light green
G : Green
L: Blue
W : White
Y: Yellow
SB : Sky blue
BR : Brown
O : Orange
GR : Gray
R : Red
P : Pink
V : Violet

COLUMN-ECU

ETACS-ECU

RELAY
BOX

LHD

RHD

LHD

RHD

NOTE

: LHD
: RHD

Column Switch Power Supply and SWS Communication Circuit

DIAGNOSTIC TROUBLE CODE PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-17

DIAGNOSIS CODE SET CONDITIONS

If the column switch ignores the data request signal 
sent by the ETACS-ECU (three times or more for one 
second), this diagnosis code will be set. Then, when 
the column switch observes the request signal for 
one second, the ECU will stop sending the diagnosis 
code.

POSSIBLE CAUSES

• Malfunction of the column switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE

Step 1. M.U.T.-II/III diagnosis code.
(1) Ignition switch: ON
(2) On completion, check that diagnosis code No.12 

is not reset.

Q: Is diagnosis code No.12 set?

YES : 

Go to Step 5.

NO : 

Go to Step 2.

Step 2. Connector check: C-206 column switch 
connector

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair the defective connector.

Step 3. Voltage measurement at C-206 column 
switch connector

(1) Disconnect the column switch connector, and 

measure at the wiring harness side.

(2) Voltage between C-206 column switch connector 

terminal No.1 and body earth

OK: System voltage

Q: Is the check result normal?

YES : 

Replace the column switch.

NO : 

Go to Step 4.

AC310479

AD

Connector: C-206 <LHD>

Harness side

AC310481AD

Connector: C-206 <RHD>

Harness side

AC310479

AD

Connector: C-206 <LHD>

Harness side

AC310481AD

Connector: C-206 <RHD>

Harness side

AC301541HQ

Connector C-206
(Harness side)

10

5

6

7

9 8

3

4

2 1

DIAGNOSTIC TROUBLE CODE PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-18

Step 4. Check the wiring harness between C-206 
column switch connector terminal No.1 and the 
battery.

NOTE: 

Prior to the wiring harness inspection, check interme-
diate connector C-129 and joint connector C-05, and 
repair if necessary.

• Check the power supply line for open circuit.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

Cope with Intermittent Malfunction 

P.00-5

).

NO : 

Repair the wiring harness.

AC310479

AD

Connector: C-206 <LHD>

Harness side

AC310481AD

Connector: C-206 <RHD>

Harness side

AC310447

Connectors: C-05, C-129 <LHD>

C-05 (GR)

C-129

C-05

C-129

AC

AC310455

Connectors: C-05, C-129 <RHD>

C-05 (GR)

C-129

C-05

C-129

AB