Mitsubishi Grandis. Manual — part 201

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-266

Inspection Procedure J-4: Vehicle speed-dependent unfolding function does not work normally.

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

The ETACS-ECU operates this function in
accordance with the input signals below.

• Ignition switch (IG1)

• Vehicle speed signal

If this function does not work normally, these input
signal circuit(s) or the ETACS-ECU may be
defective. In addition, it is possible that the function
except the vehicle speed-dependent unfolding
function has been set by using the customized
function.

POSSIBLE CAUSES

• Malfunction of ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE

Step 1. Check the SWS monitor customized
function.

Check that "WING MIRROR" is set to "SPEED SEN
FUN" by using the customized function.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Set "WING MIRROR" to "SPEED SEN
FUN" by using the customized function.
(Refer to

P.54C-574

).

Step 2. Check the electric folding door mirrors
operation.

Check that the door mirror is folded and unfolded
with the remote controlled mirror switch when the
ignition switch is at ACC position.

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Refer to inspection procedure J-1 "The
electric retractable remote controlled door
mirrors does not work at all

P.54C-250

."

Step 3. ECU check by using the SWS monitor.

Check that the power supply and earth lines to the
ETACS-ECU and the SWS communication lines are
normal.

• Ignition switch: ON

ECUS TO BE CHECKED

• ETACS ECU

OK: "OK" is displayed on the "ETACS ECU"
menu.

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Refer to Inspection Procedure A-3
"Communication with the ETACS-ECU is
not possible

P.54C-63

."

SPEED SIGNAL

COMBINATION METER

CAN COMMUNICATION LINE
(CAN_L LINE)

CAN COMMUNICATION LINE
(CAN_H LINE)

INPUT SIGNAL

ETACS-ECU

INPUT SIGNAL

IGNITION SWITCH (IG1)

Vehicle Speed-Dependent Unfolding Function

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-267

Step 4. ETACS ANALOG data by using the SWS
monitor.

Check the ETACS-ECU signal related to the vehicle
speed-dependent unfolding function.

• Set the simulated vehicle speed at approximately

10 km/h.

OK: Normal condition is displayed.

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Refer to inspection procedure Q-25 "The
vehicle speed signal is not received

P.54C-568

."

STEP 5. Retest the system.

Check that the vehicle speed-dependent unfolding
function 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.

IGNITION KEY CYLINDER
ILLUMINATION LAMP

Inspection Procedure K-1: The ignition key cylinder illumination lamp does not illuminate/extinguish
normally.

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

The ETACS-ECU operates this function in
accordance with the input signals below.

<Vehicles without keyless entry system>

• Ignition switch (IG1)

• Driver's door switch

<Vehicles with keyless entry system>

• Ignition switch (IG1)

• Key reminder switch

• Driver's door switch

Item No.

Item name

Normal condition

Item 03

SPEED SENSOR

8

− 10 km/h

Ignition Key Cylinder Illumination Lamp Circuit

KEY
REMINDER SWITCH

IGNITION
SWITCH (IG1)

ETACS-ECU

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

KEY CYLINDER
ILLUMINATION LAMP

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-268

• Interior lamp loaded signal

If this function does not work normally, these input
signal circuit(s), the ignition key cylinder illumination
lamp or the ETACS-ECU may be defective.

POSSIBLE CAUSES

• Malfunction of the key reminder switch

• Malfunction of the driver's door switch

• Malfunction of the ignition key cylinder

illumination lamp

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Check the operation of the interior lamp.

Check that the interior lamps illuminate and
extinguish normally.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Refer to inspection procedure P-1 "The
interior lamps (room ramp, rear personal
lamps, door lamps, luggage compartment
lamp, key illumination lamp) does not
illuminate or extinguish normally

P.54C-374

."

Step 2. ECU check by using the SWS monitor.

Check that the power supply and earth lines to the
ETACS-ECU and the SWS communication lines are
normal.

• Ignition switch: OFF

ECU TO BE CHECKED

• ETACS ECU

OK: "OK" is displayed on the "ETACS ECU"
menu.

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Refer to Inspection Procedure A-3
"Communication with the ETACS-ECU is
not possible

P.54C-63

."

Step 3. SWS monitor data list

Check the SWS communication signal, which are
related to the ignition key cylinder illumination lamp.

<Selected item> ETACS ECU

• Ignition switch: OFF

• Driver's door: open

OK: Normal conditions are displayed for all
the items

Q: Are the check result normal?

Normal conditions are displayed for all the items.
<Vehicles without keyless entry system> :

Go to

Step 4.

Normal conditions are displayed for all the items.
<Vehicles with keyless entry system> :

Go to Step

5.

Normal condition is not displayed for item No.30. :

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

P.54C-460

."

Normal condition is not displayed for item No.32. :

Refer to inspection procedure Q-5 "The
driver's door switch signal is not received

P.54C-474

<LH drive vehicles> or

P.54C-476

<RH drive vehicles>."

Step 4. ETACS switch data by using the SWS
monitor

Check the ETACS-ECU communication signal, which
is related to the ignition key cylinder illumination
lamp.

• Ignition switch: OFF (key inserted)

OK: Normal condition is displayed.

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Refer to inspection procedure Q-11 "The
key reminder switch signal is not received

P.54C-493

."

Item No.

Item name

Normal
condition

Item 30

IG SW(IG1)

OFF

Item 32

DR DOOR SW

ON

Item No.

Item name

Normal
condition

Item 03

KEY REMIN SW

OFF

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-269

Step 5. Connector check: C-308 key reminder
switch connector.

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Repair the defective connector.

Step 6. Check the bulb of the ignition key
cylinder illumination lamp.

Check the bulb of the ignition key cylinder
illumination lamp.

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Replace the bulb of the ignition key cylinder
illumination lamp.

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.

AC310153AD

Connector: C-308 <LHD>

Harness side

AC310183

AD

Connector: C-308 <RHD>

Harness side

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)