Mitsubishi Grandis. Manual — part 15

DIAGNOSTIC TROUBLE CODE PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-57

TROUBLE JUDGMENT

The ETACS-ECU communicates with the power
window main switch through the SWS
communication lines. If there is any trouble in that
communication, diagnosis code No.05 will be set.

COMMENTS ON TROUBLE SYMPTOM

If the power window main switch, the ETACS-ECU or
the CAN bus line fails, this diagnosis code will be set.

POSSIBLE CAUSES

• Malfunction of the power window main switch

• Malfunction of the ETACS-ECU switch

Power Window Main Switch and SWS Communication Circuit <RHD>

POWER
WINDOW RELAY

ETACS-ECU

DIAGNOSIS
CONNECTOR

POWER WINDOW
MAIN SWITCH

FUSIBLE
LINK

5

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

FRONT
SIDE

DIAGNOSTIC TROUBLE CODE PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-58

• Malfunction of the CAN bus

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

).

Step 2. 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 diagnosis code set?

YES :

Go to Step 3.

NO :

Intermittent malfunction (Refer to GROUP
00

− How to Use

Troubleshooting/Inspection Service Points

P.00-5

).

Step 3. Pulse check

Check the input signal from the ignition switch.

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

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Refer to inspection procedure A-2 "When
the ignition switch is at the LOCK (OFF)
position, the functions do not work normally.
Check the battery power supply circuit to
the ETACS-ECU

P.54B-87

."

Step 4. Connector check: F-05 power window
main switch connector

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Repair the defective connector.

Step 5. Voltage measurement at the F-05 power
window main switch connector.

(1) Disconnect the connector, and measure at the

wiring harness side.

System switch

Check condition

Ignition switch (IG1) When turned from ACC to

ON

AC311150

AB

Connector: F-05

Harness side

<LHD>

10

1

6

14

5

12

13

4

11

7

2

3

8

9

F-05(B)

AC310213

Connector: F-05

Harness side

<RHD>

10

1

6

14

5

12

13

4

11

7

2

3

8

9

F-05(B)

AB

AC311150

AB

Connector: F-05

Harness side

<LHD>

10

1

6

14

5

12

13

4

11

7

2

3

8

9

F-05(B)

AC310213

Connector: F-05

Harness side

<RHD>

10

1

6

14

5

12

13

4

11

7

2

3

8

9

F-05(B)

AB

DIAGNOSTIC TROUBLE CODE PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-59

(2) Ignition switch: ON

(3) Voltage between F-05 power window main switch

connector terminal No.6 and body earth

OK: System voltage

Q: Is the check result normal?

YES :

Go to Step 14.

NO :

Go to Step 6.

Step 6. Connector check: C-217 power window
relay connector

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Repair the defective connector.

Step 7. Check the power window relay.

Refer to GROUP 42

− Door

P.42-28

.

Q: Is the check result normal?

YES :

Go to Step 8.

NO :

Replace the power window relay.

Step 8. Voltage measurement at C-217 power
window relay connector.

(1) Remove the power window relay, and measure at

the junction block side.

(2) Voltage between C-217 power window relay

connector terminal No.5 and body earth

OK: System voltage

Q: Is the check result normal?

YES :

Go to Step 10.

NO :

Go to Step 9.

AC310507BQ

Connector F-05
(Harness side)

10

1

6

14

5

12

13

4

11

7

2

3

8

9

AC310623

Connector: C-217

AB

3

4

5

1

2

Junction block side

<LHD>

Junction block (Front view)

AC310618

Connector: C-217

3

4

5

1

2

Junction block side

<RHD>

Junction block (Front view)

AB

AC310623

Connector: C-217

AB

3

4

5

1

2

Junction block side

<LHD>

Junction block (Front view)

AC310618

Connector: C-217

3

4

5

1

2

Junction block side

<RHD>

Junction block (Front view)

AB

AC310507BR

Connector C-217
(Junction block side)

3

4

5

1

2

DIAGNOSTIC TROUBLE CODE PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-60

Step 9. Check the wiring harness between C-217
power window relay connector terminal No.5 and
fusible link (5).

NOTE:

Prior to the wiring harness inspection, check
intermediate connectors C-125 and junction block
connector C-202, and repair if necessary.

• Check the power supply line 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.

AC310623

Connector: C-217

AB

3

4

5

1

2

Junction block side

<LHD>

Junction block (Front view)

AC310618

Connector: C-217

3

4

5

1

2

Junction block side

<RHD>

Junction block (Front view)

AB

AC310613

AD

Connector: C-125 <LHD>

AC310628AB

Connector: C-125 <RHD>

AC310623

Connector: C-202

AC

<LHD>

Junction block (Front view)

Harness side

AC310618

Connector: C-202 <RHD>

Junction block (Front view)

C-202

AC

Harness side