Mitsubishi Galant. Manual — part 654

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-11

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC 11: ETACS-ECU fault

DTC SET CONDITION
DTC 11 is displayed when the ETACS-ECU detects
an error is its own data. This fault is limited to the
ETACS-ECU.

TROUBLESHOOTING HINT
Malfunction of the ETACS-ECU

DIAGNOSIS

Required Special Tool:

•

MB991502: Scan Tool (MUT-II)

Replace the ETACS-ECU.
Confirm that DTC 11 is not displayed.

Transmitter

The "LOCK" switch signal is not sent to
the ETACS-ECU.

N-17

P.54B-265

The "UNLOCK" switch signal is not sent
to the ETACS-ECU.

The "PANIC" switch signal is not sent to
the ETACS-ECU.

SYMPTOMS

INSPECTION
PROCEDURE

REFERENCE
PAGE

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-12

DTC 12: Column switch fault or improper connection to the ETACS-ECU

Column Switch Power Supply and SWS Communication Circuit

AC004198

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-13

CIRCUIT OPERATION

•

The column switch (incorporated in ECU) is
energized by the battery and the ignition switch
(IG1). If one of the harness wires has an open
circuit, power will be supplied by the other active
harness wire.

•

If the column switch (incorporated in ECU)
receives a request signal from the ETACS-ECU,
the column switch will inform the SWS
communication line of various switch conditions.

DTC SET CONDITION
DTC 12 is displayed when the column switch
(incorporated in ECU) sends an abnormal signal to
the ETACS-ECU.

TROUBLESHOOTING HINTS

•

Malfunction of the column switch

•

Malfunction of the ETACS-ECU

•

Damaged harness wires or connectors

DIAGNOSIS

Required Special Tools:

•

MB991223: Harness Set

•

MB991502: Scan Tool (MUT-II)

STEP 1. Check the ignition switch position.

Q: Does DTC 11 set with the ignition switch at "ON"

position?
YES : Go to Step 5.
NO : Go to Step 2.

AC003078 AB

CONNECTOR: C-60

COLUMN SWITCH

AC003079 AB

CONNECTOR
BLOCK (LH)

CONNECTOR: C-66

AC003082AB

CONNECTORS: C-73, C-78, C-82

C-82

C-73

C-78

JUNCTION BLOCK
(FRONT VIEW)

AC003080 AB

JUNCTION BLOCK
(REAR VIEW)

CONNECTOR: C-84

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-14

STEP 2. Check the column switch power supply circuit
(battery circuit) at the column switch connector C-60 by
backprobing.
(1)Do not disconnect the column switch connector C-60.
(2)Measure the voltage between terminal 1 and ground by

backprobing.

Q: Is the voltage approximately 12 volts (battery positive

voltage)?
YES : Go to Step 8.
NO : Go to Step 3.

STEP 3. Check the column switch connector C-60 for
damage.
Q: Is column switch connector C-60 in good condition?

YES : Go to Step 4.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Confirm the DTC 12

is not displayed.

STEP 4. Check the harness wires between column switch
connector C-60 and battery.
NOTE: After checking joint connectors C-66, check the wires. If
intermediate connector C-66 is damaged, repair or replace it.
Refer to GROUP 00E, Harness Connector Inspection

P.00E-2

.

Q: Are the harness wires between column switch

connector C-60 and battery in good condition?
YES : There is no action to be taken.
NO : Repair them. Confirm the DTC 12 is not displayed.

AC003087 AB

CONNECTOR C-60
(HARNESS SIDE)

AC003078 AB

CONNECTOR: C-60

COLUMN SWITCH

AC003078 AB

CONNECTOR: C-60

COLUMN SWITCH

AC003079 AB

CONNECTOR
BLOCK (LH)

CONNECTOR: C-66