Mitsubishi Grandis. Manual — part 67

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-265

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

• The CAN bus line is defective.

• Malfunction of ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE

Step 1. Pulse check
Check the input signals below which are related to
the electric retractable remote controlled door mirror
vehicle speed-dependent unfolding function.

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

2.

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 vehicle speed signal is not received. :

Refer to

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

P.54B-529

."

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

System switch

Check condition

Ignition switch (IG1)

When turned from ACC
to ON

Vehicle speed signal

When the vehicle speed
has reached 10 km/h or
more.

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-266

Step 2. Customize function by using the SWS
monitor.
Check that "WING MIRROR" is set to "SPEED SEN
FUN" by using the customized function.

CAUTION

The SWS monitor must be used in order to
confirm and change that setting. Use the SWS
monitor to confirm and/or change the
customized function.

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

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

P.54C-574

).

Step 3. Retest the system.
The vehicle speed-dependent unfolding function
should now work 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

• Interior lamp loaded signal

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) NOT USING SWS MONITOR

54B-267

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

DIAGNOSTIC PROCEDURE

Step 1. Check the operation of the interior lamp.
Check that the interior lamp 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.54B-364

."

Step 2. Pulse check
Check the input signals below, which are related to
the ignition key cylinder illumination lamp.

NOTE:

*

: Vehicles with keyless entry system

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

Q: Are 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 key reminder switch signal is not received. :

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

P.54B-457

."

The driver's door switch signal is not received. :

Refer to inspection procedure Q-5 "The
driver’s door switch signal is not received
<LH drive vehicles>

P.54B-434

or <RH

drive vehicles>

P.54B-436

."

Step 3. Connector check: C-308 key reminder
switch connector

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Repair the defective connector.

Step 4. 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 5.

NO :

Replace the bulb of the ignition key cylinder
illumination lamp.

System switch

Check condition

Ignition switch (IG1)

When turned from ACC
to ON

Key reminder switch

*

When the inserted
ignition key is pulled out

Driver's door switch

When the driver's door is
opened

AC310153AD

Connector: C-308 <LHD>

Harness side

AC310183

AD

Connector: C-308 <RHD>

Harness side

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-268

Step 5. Connector check: C-221 ETACS-ECU
connector

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Repair the defective connector.

Step 6. Check the wiring harness from C-221
ETACS-ECU connector terminal Nos.69 and 71 to
C-308 ignition key cylinder illumination lamp
connector terminal Nos.1 and 2.

• Check the input and output lines for open circuit.

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Repair the wiring harness.

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)

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)

AC310153AD

Connector: C-308 <LHD>

Harness side

AC310183

AD

Connector: C-308 <RHD>

Harness side