Mitsubishi 380. Manual — part 111

INPUT SIGNAL PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-441

STEP 1. Check the input signal (by using the pulse check
mode of the monitor).
Check the input signals from the all door switches.

CAUTION

To prevent damage to diagnostic tool MB991958, always
turn the ignition switch to the "LOCK" (OFF) position
before connecting or disconnecting diagnostic tool
MB991958.
(1) Connect the diagnostic tool MB991958. Refer to "How to

connect SWS monitor

P.54B-13

."

(2) Operate diagnostic tool MB991958 according to the

procedure below to display "Pulse check."
a. Select "Interactive Diagnosis."
b. Select "System select."
c. Select "SWS."
d. Select "Pulse Checking."

(3) Check that diagnostic tool MB991958 sounds.

Q: When the front and rear doors are opened/closed, does

the diagnostic tool MB991958 sound?
When the front doors are opened and closed, diagnostic
tool MB991958 does not sound. :
Refer to Inspection

Procedure M-4 "ETACS-ECU does not receive any
signal from the front door switches

P.54B-413

."

When the rear door (LH) is opened and closed,
diagnostic tool MB991958 does not sound. :
Go to Step

2.

When the rear door (RH) is opened and closed,
diagnostic tool MB991958 does not sound. :
Go to Step

7.

STEP 2. Check rear door switch (LH) connector D-16 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is rear door switch (LH) connector D-16 in good

condition?
YES :
Go to Step 3.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

. If the functions described in "CIRCUIT

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

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

16DB464A

CONNECTORS: D-06, D-16

D-06

D-16

HARNESS SIDE

INPUT SIGNAL PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-442

STEP 3. Check the rear door switch (LH).
Remove the rear door switch (LH). Refer to GROUP 42, Door,
Door Assembly

P.42-37

. Then check continuity between the

switch terminals and the body ground.

Q: Is the rear door switch (LH) in good condition?

YES : Go to Step 4.
NO : Replace the rear door switch (LH). If the functions

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

STEP 4. Measure resistance at the lower metal part of the
rear door switch (LH) in order to check the ground circuit
to the rear door switch (LH).

NOTE: Check that the rear door switch (LH) is grounded to the
vehicle body via its mounting screw.
Remove the cap, and measure the resistance value between
the lower metal part 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 : Check the installation of the switch, and repair if

necessary. If the functions described in "CIRCUIT
OPERATION" work normally, the input signal from the
rear door switch (LH) should be normal.

STEP 5. Check ETACS-ECU connector C-219 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ETACS-ECU connector C-219 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 functions described in "CIRCUIT

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

SWITCH
POSITION

TESTER
CONNECTION

SPECIFIED
CONDITION

Released (ON)

1

− body ground

Less than 2 ohms

Pressed (OFF)

1

− body ground

Open circuit

1 2 3

ACX01865AC

ON

OFF

AC210276AB

METAL PART

CUP

54DB014A

CONNECTOR: C-219

JUNCTION BLOCK SIDE

JUNCTION BLOCK

(REAR VIEW)

INPUT SIGNAL PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-443

STEP 6. Check the wiring harness between rear door
switch (LH) connector D-16 (terminal 1) and ETACS-ECU
connector C-219 (terminal 7).

NOTE: Also check junction block connector C-204 for loose,
corroded, or damaged terminals, or terminals pushed back in
the connector. If junction block connector C-204 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 (LH)

connector D-16 (terminal 1) and ETACS-ECU connector
C-219 (terminal 7) 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 (LH) 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
(LH) should be normal.

54DB014A

CONNECTOR: C-219

JUNCTION BLOCK SIDE

JUNCTION BLOCK

(REAR VIEW)

16DB464A

CONNECTORS: D-06, D-16

D-06

D-16

HARNESS SIDE

16DB324A

CONNECTOR: C-204

HARNESS SIDE

INPUT SIGNAL PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-444

STEP 7. Check rear door switch (RH) connector D-06 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is rear door switch (RH) connector D-06 in good

condition?
YES :
Go to Step 8.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

. If the functions described in "CIRCUIT

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

STEP 8. Check the rear door switch (RH).
Remove the rear door switch (RH). Refer to GROUP 42, Door,
Door Assembly

P.42-37

. Then check continuity between the

switch terminals and the body ground.

Q: Is the rear door switch (RH) in good condition?

YES : Go to Step 9.
NO : Replace the rear door switch (RH). If the functions

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

STEP 9. Measure resistance at the lower metal part of the
rear door switch (RH) in order to check the ground circuit
to the rear door switch (RH).

NOTE: Check that the rear door switch (RH) is grounded to the
vehicle body via its mounting screw.
Remove the cap, and measure the resistance value between
the lower metal part and ground.

• The resistance should be 2 ohms or less.

Q: Is the measured resistance 2 ohms or less?

YES : Go to Step 10.
NO : Check the installation of the switch, and repair if

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

16DB464A

CONNECTORS: D-06, D-16

D-06

D-16

HARNESS SIDE

SWITCH
POSITION

TESTER
CONNECTION

SPECIFIED
CONDITION

Released (ON)

1

− body ground

Less than 2 ohms

Pressed (OFF)

1

− body ground

Open circuit

1 2 3

ACX01865AC

ON

OFF

AC210276AB

METAL PART

CUP

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Текст

Политика конфиденциальности