Mitsubishi Galant 9G. Manual — part 129

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-512

NOTE: Also check intermediate connector C-28 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connector C-28 is damaged, repair or
replace the damaged component(s) as described in GROUP
00E, Harness Connector Inspection

P.00E-2

.

Q: Is the wiring harness between rear door switch (RH)

connector D-06 (terminal 1) and ETACS-ECU connector
C-217 (terminal 35) in good condition?
YES : Replace the ETACS-ECU. If the functions described

in "CIRCUIT OPERATION" work normally, the input
signal from the rear door switch (RH) should be
normal.

NO : The wiring harness may be damaged or the

connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary. If the
functions described in "CIRCUIT OPERATION" work
normally, the input signal from the rear door switch
(RH) should be normal.

INSPECTION PROCEDURE N-4: ETACS-ECU does not receive any signal from the door lock key
cylinder switch.

AC305233 DB

CONNECTOR: C-28

DOOR LOCK
KEY CYLINDER SWITCH

ETACS-ECU

Door Lock Key Cylinder Switch Input Circuit

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-513

.

CIRCUIT OPERATION

The ETACS-ECU operates the central door locking
system according to signal from the door lock key
cylinder switch.

.

TECHNICAL DESCRIPTION (COMMENT)

If the signal is not normal, the systems, which are
described in "CIRCUIT OPERATION", do not work
normally.

.

TROUBLESHOOTING HINTS

• The door lock key cylinder switch may be defec-

tive

• 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

DIAGNOSIS

Required Special Tool:

• MB991223: Harness Set

STEP 1. Check door lock key cylinder switch connector
E-14 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Is door lock key cylinder switch connector E-14 in good

condition?
YES : Go to Step 2.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

. If the systems described in "CIRCUIT

OPERATION" work normally, the input signal from the
door lock key cylinder switch should be normal.

AC305231

CONNECTOR: C-26

AL

AC305413

CONNECTOR: C-217

AK

JUNCTION BLOCK

(REAR VIEW)

AC305262

AL

CONNECTOR: E-14

E-14 (B)

AC305262

E-14 (B)

HARNESS SIDE

AN

CONNECTOR: E-14

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-514

STEP 2. Check the door lock key cylinder switch.
Disconnect door lock key cylinder switch connector E-14. Then
check continuity between the switch terminals.

Q: Is the door lock key cylinder switch in good condition?

YES : Go to Step 3.
NO : Replace the door lock key cylinder switch. If the

systems described in "CIRCUIT OPERATION" work
normally, the input signal from the door lock key
cylinder switch should be normal.

STEP 3. Check the ground circuit to the door lock key
cylinder switch. Measure the resistance at door lock key
cylinder switch connector E-14.
(1) Disconnect door lock key cylinder switch connector E-14

and measure the resistance available at the wiring harness
side of the connector.

(2) Measure the resistance value between terminal 2 and

ground.

• The resistance should be 2 ohms or less.

Q: Is the measured resistance 2 ohms or less?

YES : Go to Step 5.
NO : Go to Step 4.

SWITCH
POSITION

TESTER
CONNECTION

SPECIFIED
CONDITION

LOCK

2

− 3

Less than 2 ohms

Neutral (OFF)

1

− 2, 2 − 3

Open circuit

UNLOCK

1

− 2

Less than 2 ohms

AC210743

1

3

2

AC305262

E-14 (B)

HARNESS SIDE

AN

CONNECTOR: E-14

AC209364JC

CONNECTOR E-14
(HARNESS SIDE)

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-515

STEP 4. Check the wiring harness between door lock key
cylinder switch connector E-14 (terminal 2) and ground.

NOTE: Also check intermediate connector C-26 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connector C-26 is damaged, repair or
replace the connector as described in GROUP 00E, Harness
Connector Inspection

P.00E-2

.

Q: Is the wiring harness between door lock key cylinder

switch connector E-14 (terminals 2) and ground in good
condition?
YES : No action is necessary and testing is complete.
NO : The wiring harness may be damaged or the

connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary. If the
systems described in "CIRCUIT OPERATION" work
normally, the input signal from the door lock key
cylinder switch should be normal.

STEP 5. Check ETACS-ECU connector C-217 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ETACS-ECU connector C-217 in good condition?

YES : Go to Step 6.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

. If the systems described in "CIRCUIT

OPERATION" work normally, the input signal from the
door lock key cylinder switch should be normal.

AC305262

E-14 (B)

HARNESS SIDE

AN

CONNECTOR: E-14

AC305231

CONNECTOR: C-26

AK

AC305413AH

CONNECTOR: C-217

HARNESS SIDE

25

26

27

28

29

21

22

23

24

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

JUNCTION BLOCK

(REAR VIEW)