Mitsubishi Grandis. Manual — part 31

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-121

YES :

Go to Step 2.

NO :

<When the central door locking does not
operate normally> Refer to Inspection
Procedure C-1 "Central door locking system
does not work

P.54C-106

." <When the

keyless entry system does not operate
normally> Refer to Inspection Procedure
E-1 "Keyless Entry System does not Work

P.54C-186

."

Step 2. Pulse check
Check the input signals which are related to the
tailgate opening and closing.

OK: The MUT-III sounds or the voltmeter
needle fluctuates.

Q: Is the check result normal?

All the signals are received normally. :

Go to Step

3.

The ignition switch (IG1) signal is not received. :

Refer to Inspection Procedure Q-2 "The
ignition switch (IG1) signal is not received

P.54B-420

."

The Tailgate lock release handle signal is not
received. :

Refer to Inspection Procedure Q-18

"The tailgate lock release handle signal is
not received

P.54B-494

."

Step 3. Connector check: G-17 tailgate lock
actuator connector

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Repair the defective connector.

Step 4. Check the tailgate lock actuator.
Check that the tailgate lock actuator is in good
condition. Refer to GROUP 42

− Tailgate

P.42-51

.

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Replace the tailgate lock actuator.

Step 5. Resistance measurement at the G-17
tailgate lock actuator connector.

(1) Disconnect the connector, and measure at the

wiring harness side.

(2) Resistance between G-17 tailgate lock actuator

connector terminal No.2 and body earth

OK: 2

Ω or less

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Go to Step 6.

System switch

Check condition

Ignition switch (IG1)

When turned from ACC
to ON

Tailgate lock release
handle

When turned from OFF
to ON

AC310222

Connector: G-17

Harness side

AD

G-17(B)

AC310222

Connector: G-17

Harness side

AD

G-17(B)

AC209364

AC209364

Connector C-05
(Harness side)

MQ

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-122

Step 6. Check the wiring harness between G-17
tailgate lock actuator connector terminal No.2
and the body earth.

• Check the earth wires for open circuit.

Q: Is the check result normal?

YES :

The trouble can be an intermittent

malfunction (Refer to GROUP 00

− How to

Cope with Intermittent Malfunction

P.00-5

).

NO :

Repair the wiring harness.

Step 7. Connector check: C-221 ETACS-ECU
connector

Q: Is the check result normal?

YES :

Go to Step 8.

NO :

Repair the defective connector.

AC310222

Connector: G-17

Harness side

AD

G-17(B)

AC310626

Connector: C-221

Junction block (Rear view)

<LHD>

AC

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

Harness side

C-221(GR)

AC310620

Connector: C-221

Junction block
(Rear view)

<RHD>

AC

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

Harness side

C-221(GR)

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-123

Step 8. Check the wiring harness from C-221
ETACS-ECU connector terminal No.61 to G-17
tailgate lock actuator connector terminal No.1.

NOTE:

Prior to the wiring harness inspection, check
intermediate connector C-16 and G-14, and repair if
necessary.

• Check the input and output lines for open circuit.

Q: Is the check result normal?

YES :

Go to Step 9.

NO :

Repair the wiring harness.

Step 9. Retest the system.

Check that the tailgate lock works normally.

Q: Is the check result normal?

YES :

The trouble can be an intermittent

malfunction (Refer to GROUP 00

− How to

Cope with Intermittent Malfunction

P.00-5

).

NO :

Replace the ETACS-ECU.

AC310626

Connector: C-221

Junction block (Rear view)

<LHD>

AC

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

Harness side

C-221(GR)

AC310620

Connector: C-221

Junction block
(Rear view)

<RHD>

AC

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

Harness side

C-221(GR)

AC310222

Connector: G-17

Harness side

AD

G-17(B)

AC310615

AE

Connector: C-16 <LHD>

AC310631 AD

Connector: C-16 <RHD>

AC310222

Connector: G-14

AF

2

1

4

3

13

8

11

10

5

7

12

6

14

9

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-124

POWER WINDOWS

Inspection Procedure D-1: Power windows do not work at all.

CAUTION

Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.

Power Window Relay Circuit

FUSIBLE
LINK

5

POWER WINDOW
RELAY

ETACS-ECU

POWER WINDOW
MAIN SWITCH

POWER
WINDOW
SUB
SWITCH
(FRONT: RH)

POWER
WINDOW
SUB
SWITCH
(REAR: LH)

POWER
WINDOW
SUB
SWITCH
(REAR: RH)

CPU

Wire colour code
B : Black
LG : Light green
G : Green
L: Blue
W : White
Y: Yellow
SB : Sky blue
BR : Brown
O : Orange
GR : Gray
R : Red
P : Pink
V : Violet

J/B SIDE