Mitsubishi 380. Manual — part 120

INPUT SIGNAL PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-477

STEP 4. Check the ignition switch (IG1) line of the power
supply circuit to the ETACS-ECU. Measure the voltage at
ETACS-ECU connector C-219.
(1) Disconnect ETACS-ECU connector C-219 and measure the

voltage available at the junction block side of the connector.

(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal 8 and ground.

• The voltage should measure approximately 12 volts

(battery positive voltage).

Q: Is the measured voltage approximately 12 volts (battery

positive voltage)?
YES : Go to Step 6.
NO : Go to Step 5.

STEP 5. Check the wiring harness between ETACS-ECU
connector C-219 (terminal 8) and the ignition switch (IG1).

54DB014A

CONNECTOR: C-219

JUNCTION BLOCK SIDE

JUNCTION BLOCK

(REAR VIEW)

AC209799

201918 171615 1413 1211 10 9 8 7 6 5 4 3 2 1

AB

CONNECTOR C-219
(JUNCTION BLOCK SIDE)

54DB014A

CONNECTOR: C-219

JUNCTION BLOCK SIDE

JUNCTION BLOCK

(REAR VIEW)

INPUT SIGNAL PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-478

NOTE: Also check junction block connector C-215 for loose,
corroded, or damaged terminals, or terminals pushed back in
the connector. If junction block connector C-215 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 ETACS-ECU connector

C-219 (terminal 8) and the ignition switch (IG1) 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
functions or equipment described in "CIRCUIT
OPERATION" work normally, the interior lamp loaded
signal should be normal.

STEP 6. Check the ignition switch (ACC) line of the power
supply circuit to the ETACS-ECU. Measure the voltage at
ETACS-ECU connector C-219.
(1) Disconnect ETACS-ECU connector C-219 and measure the

voltage available at the junction block side of the connector.

(2) Turn the ignition switch to the "ACC" position.

(3) Measure the voltage between terminal 18 and ground.

• The voltage should measure approximately 12 volts

(battery positive voltage).

Q: Is the measured voltage approximately 12 volts (battery

positive voltage)?
YES : Replace the ETACS-ECU. If the functions or

equipment described in "CIRCUIT OPERATION" work
normally, the interior lamp loaded signal should be
normal.

NO : Go to Step 7.

54DB014A

CONNECTOR: C-219

JUNCTION BLOCK SIDE

JUNCTION BLOCK

(REAR VIEW)

AC209365FE

CONNECTOR: C-219
(JUNCTION BLOCK SIDE)

INPUT SIGNAL PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-479

STEP 7. Check the wiring harness between ETACS-ECU
connector C-219 (terminal 18) and the ignition switch
(ACC).

NOTE: Also check junction block connector C-215 for loose,
corroded, or damaged terminals, or terminals pushed back in
the connector. If junction block connector C-215 is damaged,
repair or replace the damaged component(s) as described in

Q: Is the wiring harness between ETACS-ECU connector

C-219 (terminal 18) and ignition switch (ACC) 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
functions or equipment described in "CIRCUIT
OPERATION" work normally, the interior lamp loaded
signal should be normal.

54DB014A

CONNECTOR: C-219

JUNCTION BLOCK SIDE

JUNCTION BLOCK

(REAR VIEW)

CHECK AT ECU TERMINAL

SIMPLIFIED WIRING SYSTEM (SWS)

54B-480

CHECK AT ECU TERMINAL

M1549001201031

ETACS-ECU

NOTE: *:The terminal No.1 to 20 connectors cannot
be measured as the ETACS-ECU is installed directly
on the junction block. Therefore, this information is
only for reference.

16DB471A

C-218

C-219

C-217

TERMINAL
NO.

INSPECTION ITEM

INSPECTION CONDITION

NORMAL VALUE

1

Output to power window relay

When the power windows can
work

Battery positive voltage

2

Battery positive voltage (for
central door lock)

Always

Battery positive voltage

3

Ground (for ECU)

Always

0 V

4

Power supply to ignition switch
(ACC)

Ignition switch: "ACC"

Battery positive voltage

5

Output to dome lamp

When dome lamp is on

2 V or less

6

Power supply to interior lamp

Always (when interior lamp
shutoff function is not operating)

Battery positive voltage

7

Input from rear door switch (LH)

Rear door switch (LH): ON (rear
door (LH) open)

0 V

8

Power supply to ignition switch
(IG1)

Ignition switch: "ON"

Battery positive voltage

9

Output to turn-signal lamp (RH)

When turn-signal lamp (RH) is
on

Battery positive voltage

10

Input from driver’s door switch

Driver's door switch: ON (driver's
door open)

0 V

11

Battery power supply for
turn-signal lamp

Always

Battery positive voltage

12

Output to door lock

When door lock actuator is
operating (doors locked)

Battery positive voltage

13

Output to door unlock (excluding
driver's door)

When door lock actuator is
operating (doors unlocked)

Battery positive voltage

14

Output to turn-signal lamp (LH)

When turn-signal lamp (LH) is on Battery positive voltage

15

− 17

−

−

−

18

Power supply to ignition switch
(ACC)

Ignition switch: "ACC"

Battery positive voltage

19

−

−

−

20

Battery power supply (for ECU)

Always

Battery positive voltage

21

−

−

−