Mitsubishi Grandis. Manual - part 277

CHECK AT ECU TERMINAL

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-570

19

−

−

−

20

Battery power supply (for ECU)

Always

System voltage

21

Input from rear fog lamp switch

Rear fog lamp switch: ON

0 V

22

Output to central door locking (for 
unlocking the driver's door)

When the door lock actuators 
unlock the doors

System voltage

23

Rear washer output

When rear washer is operating

System voltage

24

Input from remote controlled mirror 
switch (fold switch)

Remote controlled mirror switch 
(fold switch): ON

0 V

29

Input from passenger’s seat belt 
switch

When passenger’s seat belt switch 
is on

−

30

Input to key reminder switch

Key reminder switch: ON (ignition 
key removed)

0 V

31

Output to electric retractable remote 
controlled mirror (unfold)

When the door mirrors are folding

System voltage

33

Input to door key switch or tailgate 
key switch (lock switch)

All doors and tailgate: Locked

0 V

34

Input to door key switch or tailgate 
key switch (unlock switch)

All doors and tailgate: Unlocked

0 V

35

Input to driver's door lock actuator 
(lock switch)

Driver's door lock: Locked

0 V

36

Input to driver's door lock actuator 
(unlock switch)

Driver's door lock: Unlocked

0 V

37

Input from tailgate switch

Tailgate switch: ON (tailgate open)

0 V

39

Input to back-up lamp switch

Sift lever: R position
Ignition switch: ON

System voltage

40

Output to electric retractable remote 
controlled mirror (unfold)

When the door mirrors are 
unfolding

System voltage

51

Setting diagnosis code or sending 
input check signal

When diagnosis code is set (the 
MUT-II/III is connected or the 
diagnosis connector No.1 is 
earthed)

0 to 12 V (pulse signal)

When input check signal is sent

0 V, 12 V (input signal 
is fluctuating)

52

Input from luggage room lamp 
switch

Luggage room lamp switch: ON

0 V

53

Input from interior lamp off switch

Interior lamp switch: OFF

0 V

54

Input from front fog lamp switch

Front fog lamp switch: ON

0 V

55

Input from hazard warning lamp 
switch

Hazard warning lamp switch: ON

0 V

56

Earth (for sensor)

Always

0 V

57, 58

−

−

−

59

SWS communication line

Always

0 to 12 V (pulse signal)

Termin
al No.

Check item

Check condition

Normal condition

CHECK AT ECU TERMINAL

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-571

COLUMN SWITCH

60

Power supply to automatic air 
conditioner control (A/C-ECU) 
illumination and radio illumination 
(battery positive voltage)

Always

System voltage

61

Input to tailgate lock actuator

Tailgate lock: Locked

0 V

62

Input to tailgate lock release handle Tailgate lock release handle: ON

0 V

63

Input from interior lamp on switch

Interior lamp switch: ON

0 V

64

Earth (for daytime running lamp 
function)

Always

0 V

65

Input from passenger's door switch Passenger's door switch: ON (door 

open)

0 V

66

Input from windshield intermittent 
wiper volume

Turn the ignition switch to the ACC 
position, and move the wiper 
volume from "Fast" to "Slow."

0 to 2.5 V

67

Input from diagnosis control

When MUT-III is connected

0 V

68

Input of SWS request signal

Always

0 to 12 V (pulse signal)

69

Output to ignition key cylinder 
illumination lamp

When ignition key cylinder 
illumination is on

2 V or less

70

Input from right rear door switch

Right rear door switches: ON (right 
rear door open)

0 V

71

Power supply to interior lamp

Always (when the interior lamp off 
function is off)

System voltage

72

−

−

−

73

−

−

−

74

Output to rear fog lamp

When rear fog lamp is on

System voltage

Termin
al No.

Check item

Check condition

Normal condition

AC312903 AB

C-301

Termin
al No.

Check item

Check condition

Normal condition

1

System voltage

Always

System voltage

2

Input of SWS request signal

Always

0 to 12 V (pulse signal)

3

SWS communication line

Always

0 to 12 V (pulse signal)

4

Earth

Always

0  V

5

−

−

−

6

Output to windshield intermittent 
wiper volume

Ignition switch: ACC
Move the wiper volume from "Fast" 
to "Slow."

0 to 2.5 V

7

−

−

−

CHECK AT ECU TERMINAL

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-572

FRONT-ECU

NOTE: Measurement is not possible as the front-ECU is mounted on the relay box directly. The values are for 
reference only.

8

Back-up output to windshield wiper 
switch

Windshield low-speed wiper switch 
or windshield high-speed wiper 
switch: ON

0 V

9

Power supply from ignition switch 
(IG1)

Ignition switch: ON

System voltage

10

Back-up output to headlamp switch Headlamp switch: ON

0 V

Termin
al No.

Check item

Check condition

Normal condition

AC312904AB

A-15X

A-14X

Termin
al No.

Check item

Check condition

Normal condition

1

Output to headlamp washer

When headlamp washer is 
operating

System voltage

2

−

−

−

3

Battery power supply (for headlamp 
washer)

Always

System voltage

4

Output to tail lamps

When the tail lamps are on

System voltage

5

Battery power supply (for ECU)

Always

System voltage

6

Output to low-beam headlamps

When low-beam headlamps are on System voltage

7

Battery power supply (for tail lamps) Always

System voltage

8, 9

Battery power supply (for 
headlamps)

Always

System voltage

10

Output to high-beam headlamps

When high-beam headlamps are on System voltage

11

Output to front fog lamps

When front fog lamps are on

System voltage

21

Earth

Always

0 V

22

Power supply to the ignition switch 
(IG2)

Ignition switch: ON

System voltage

23

−

−

−

24

Output to windshield wiper (high 
speed operation)

When windshield wipers are 
operating at high speed

System voltage

25

Output to windshield wiper (low 
speed operation)

When windshield wipers are 
operating at low speed

System voltage

26

Back-up input from windshield 
wiper switch

Windshield low-speed wiper switch 
or windshield high-speed wiper 
switch: ON

0 V

27

Back-up input from headlamp 
switch

Headlamp switch: ON

0 V

CHECK AT ECU TERMINAL

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-573

POWER WINDOW MAIN SWITCH

POWER WINDOW SUB SWITCH

28

Power supply from ignition switch 
(ACC)

Ignition switch: ACC

System voltage

29

Input of windshield wiper automatic 
stop signal

When windshield wipers are 
operating

System voltage

30

SWS communication line

Always

0 to 12 V (pulse signal)

31

Output to windshield washer

When windshield washer is 
operating

System voltage

Termin
al No.

Check item

Check condition

Normal condition

AC312905 AB

F-05

Termin
al No.

Check item

Check condition

Normal condition

1

Output to power window motor

−

−

2

Earth

Always

0  V

3

−

−

−

4

SWS communication line (to 
ETACS-ECU)

Always

0 to 12 V (pulse signal)

5

−

−

−

6

Power supply

Power window relay: ON

System voltage

7

Output to power window motor

−

−

8

Input from power window motor 
(pulse sensor earth)

−

0 V

9

Input from power window motor 
(pulse sensor signal)

When the power windows are 
operating

0 to 5 V (pulse signal)

10

Input from power window motor 
(pulse sensor signal)

When the power windows are 
operating

0 to 5 V (pulse signal)

11

SWS communication line (power 
window sub switch)

Power window relay: ON

0 to 12 V (pulse signal)

12

Input from power window motor 
(power supply to pulse sensor)

When the power windows are 
operating

5 V

13, 14

−

−

−

AC312906 AB

F-15 (front: RH), F-02 (rear: LH), F-18 (rear: RH) <LHD>
F-26 (front: LH), F-02 (rear: LH), F-18 (rear: RH) <RHD>