Mitsubishi Grandis. Manual - part 19

DIAGNOSTIC TROUBLE CODE PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-73

Step 5. Check whether the diagnosis code is
reset.
Check again if the diagnosis code is set.
(1) Erase the diagnosis code.
(2) Ignition switch: LOCK (OFF) position to ON
(3) On completion, check that the diagnosis code is

not reset.

Q: Is the check result normal?

YES :

A poor connection, open circuit or other

intermittent malfunction is present in the
CAN bus lines between the combination
meter and the ETACS-ECU (Refer to
GROUP 00

− How to Use

Troubleshooting/Inspection Service Points

P.00-5

NO :

Replace the ETACS-ECU, and then go to
Step 6.

Step 6. Check whether the diagnosis code is
reset.
Recheck if the diagnosis code is set.
(1) Erase the diagnosis code.
(2) Ignition switch: LOCK (OFF) position to ON
(3) On completion, check that the diagnosis code is

not reset.

Q: Is the check result normal?

YES :

The procedure is complete.

NO :

Return to Step 1.

Diagnosis code No.21 Meter failure information

CAUTION

If diagnosis code No.21 is set in the ETACS-ECU,
diagnose the CAN bus lines.

CAUTION

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

TROUBLE JUDGMENT

The ETACS-ECU receives vehicle speed-related
signal from the combination meter via the CAN bus
lines. If failure information is sent to the vehicle
speed-related signal, diagnosis code No.21 will be
set.

COMMENT ON TROUBLE SYMPTOM

Current trouble

• Connector(s) or wiring harness in the CAN bus

lines, the engine-A/T-ECU <A/T> or the
engine-ECU <M/T>, the combination meter, the
ETACS-ECU or the output shaft speed sensor
may be defective.

Past trouble

• If diagnosis code No.21 is stored as a past

trouble, carry out diagnosis with particular
emphasis on wiring and connector(s) between
the engine-A/T-ECU <A/T> or the engine-ECU
<M/T> and the output shaft speed sensor. For
diagnosis procedures, refer to "How to treat past
trouble" (Refer to GROUP 00

− How to Use

Troubleshooting/Inspection Service Points

P.00-5

POSSIBLE CAUSES

• Malfunction of the engine-A/T-ECU <A/T> or

engine-ECU <M/T>

• Defective combination meter

• Malfunction of the ETACS-ECU

DIAGNOSIS PROCEDURE

Step 1. MUT-III CAN bus diagnostics
Use the MUT-III to diagnose the CAN bus lines.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Repair the CAN bus line (Refer to GROUP
54D

− Diagnosis

P.54D-16

). Repair the

CAN bus line and go to Step 6.

Step 2. MUT-III diagnosis code
Check whether the combination meter-related
diagnosis code is set.

Q: Is the diagnosis code set?

YES :

Diagnose the combination meter (Refer to

GROUP 54A

− Troubleshooting

P.54A-35

NO :

Go to Step 3.

TROUBLE SYMPTOM CHART

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-74

Step 3. MUT-III diagnosis code
Check if a diagnosis code, which relates to CAN
communication-linked systems below, is set.

• Multi-centre display

U1113: Combination meter failure information

diagnosis code

Q: Is the diagnosis code set?

YES :

Go to Step 4.

NO :

Go to Step 5.

Step 4. Check whether the diagnosis code is
reset.
Check again if the diagnosis code is set.
(1) Erase the diagnosis code.
(2) Ignition switch: LOCK (OFF) position to ON
(3) On completion, check that the diagnosis code is

not reset.

Q: Is the check result normal?

YES :

A poor connection, open circuit or other

intermittent malfunction is present in the
CAN bus lines between the engine-A/T-ECU
<A/T> or the engine-ECU <M/T> and the
output shaft speed sensor (Refer to GROUP
00

− How to Use

Troubleshooting/Inspection Service Points

P.00-5

NO :

Then go to Step 6.

Step 5. Check whether the diagnosis code is
reset.
Recheck if the diagnosis code is set.
(1) Erase the diagnosis code.
(2) Ignition switch: LOCK (OFF) position to ON
(3) On completion, check that the diagnosis code is

not reset.

Q: Is the check result normal?

YES :

A poor connection, open circuit or other

intermittent malfunction is present in the
CAN bus lines between the engine-A/T-ECU
<A/T> or the engine-ECU <M/T> and the
output shaft speed sensor (Refer to GROUP
00

− How to Use

Troubleshooting/Inspection Service Points

P.00-5

NO :

Replace the ETACS-ECU, and then go to
Step 6.

Step 6. Check whether the diagnosis code is
reset.

Recheck if the diagnosis code is set.
(1) Erase the diagnosis code.
(2) Ignition switch: LOCK (OFF) position to ON
(3) On completion, check that the diagnosis code is

not reset.

Q: Is the check result normal?

YES :

The procedure is complete.

NO :

Return to Step 1.

TROUBLE SYMPTOM CHART

M1549000800844

Symptom

Inspection
procedure
number

Reference
page

Communication with the MUT-III is not possible.

A-1

P.54B-83

When the ignition switch is at the LOCK (OFF) position, the functions do
not work normally.

A-2

P.54B-87

Check the battery power supply circuit to the ETACS-ECU.

TROUBLE SYMPTOM CHART

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-75

<Function system>

Symptom

Inspection
procedure
number

Reference
page

Alarm Function

Lamp reminder buzzer function does not
work normally.

B-1

P.54B-92

Seat belt warning buzzer function does not
work normally.

B-2

P.54B-94

Door-ajar warning buzzer function does not
work.

B-3

P.54B-95

Turn-signal lamp operation sound function
does not work normally.

B-4

P.54B-97

Central door locking

Central door locking system does not work. C-1

P.54B-99

The central door locking system does not
function by using the driver's door lock
switch.

C-2

P.54B-102

The central door locking system does not
function by using the passenger's door key
cylinder.

C-3

P.54B-103

The central door locking system does not
function by using the tailgate key cylinder.

C-4

P.54B-105

A door can not be locked or unlocked by
the central door locking system. <LH drive
vehicles>

C-5

P.54B-107

A door can not be locked or unlocked by
the central door locking system. <RH drive
vehicles>

P.54B-114

The tailgate cannot be opened or closed.

C-6

P.54B-120

Power window

Power windows do not work at all.

D-1

P.54B-124

Driver's power window does not work by
means of the power window main switch.
<LH drive vehicles>

D-2

P.54B-134

Driver's power window does not work by
means of the power window main switch.
<RH drive vehicles>

P.54B-136

Relevant power window(s) do not work by
means of the front and rear power window
sub switches.

D-3

P.54B-138

passenger's and/or rear power window(s)
do not work by means of the power window
main switch.

D-4

P.54B-157

The window glass lowers automatically
while it is rising.

D-5

P.54B-167

Power window anti-trap function does not
work normally.

D-6

P.54B-168

The power window timer function does not
work normally.

D-7

P.54B-179

TROUBLE SYMPTOM CHART

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-76

Keyless entry system

Keyless entry system does not work.

E-1

P.54B-180

Keyless entry hazard lamp answerback
function or the room lamp answerback
function does not work normally.

E-2

P.54B-181

Encrypted code cannot be registered.

E-3

P.54B-183

The timer lock function does not work after
the doors have been unlocked by the
keyless entry system.

E-4

P.54B-184

Multi-mode keyless entry system function
does not work at all.

E-5

P.54B-185

Sunroof

The sunroof does not work at all.

F-1

P.54B-186

Any of the sunroof switch positions is
defective.

F-2

P.54B-193

Sunroof timer function does not work
normally.

F-3

P.54B-196

The sunroof inhibition function does not
work normally (The sunroof operation lock
warning buzzer does not sound).

F-4

P.54B-202

Sunroof anti-trap function does not work
normally.

F-5

P.54B-204

Windshield wiper and
washer

The windshield wipers do not work at all.

G-1

P.54B-205

The windshield wipers do not work when
the wiper switch is at "INT", "Washer" or
"Mist" position. However, the wipers work
at low speed when the switch is at "Lo" and
"Hi" position.

G-2

P.54B-213

The windshield wipers do not stop at the
specified park position.

G-3

P.54B-214

The windshield wipers do not work
normally.

G-4

P.54B-219

The intermittent wiper interval cannot be
adjusted by operating the windshield
intermittent wiper volume control.

G-5

P.54B-223

The intermittent wiper interval is not
changed according to the vehicle speed.