Mitsubishi L200. Manual - part 466

AC800980

AG

Connector: A-48

(B)

AC600688

Connector: C-13 <LHD>

BS

AC600623DJ

Connectors: C-13 <RHD>

AC600687CI

Connector: C-113 <LHD>

Harness side 
connector

18

19

21

22

20

2423

11

12

10 9

7

8

6

1413

171615

3

4

5

1

2

AC600623

 Harness side 
connector

CO

Connector: C-113 <RHD>

18

19

21

22

20

2423

11

12

10 9

7

8

6

1413

171615

3

4

5

1

2

TROUBLESHOOTING

ACTIVE STABILITY & TRACTION CONTROL SYSTEM (ASTC)

35C-120

CAUTION

If there is any problem in the CAN bus lines, an 
incorrect diagnosis code may be set. Diagnose 
the CAN bus lines before the diagnosis codes 
(Refer to GROUP 54C 

− CAN Bus Diagnostics 

Table .).

OPERATION

• ASTC-ECU send the illumination signal of ABS 

warning lamp to the combination meter via the 
CAN communication.

• ASTC-ECU operates the ABS warning lamp and 

the ABS warning lamp for three seconds after the 
ignition switch is turned "ON" position for bulb 
check.

COMMENT
This may be caused by faults in the signal line, the 
combination meter or the ASTC-ECU.

PROBABLE CAUSES

• Malfunction of the combination meter

• Damaged wiring harness and connectors

• Malfunction of the hydraulic unit assembly (inte-

grated with ASTC-ECU)

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics
Use M.U.T.-III to diagnose the CAN bus lines.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair the CAN bus lines (Refer to GROUP 
54C 

− CAN Bus Diagnostics Table .). Then 

go to Step 6.

STEP 2. Connector check: A-48 ASTC-ECU 
connector, C-13 intermediate connector, C-113 
combination meter connector

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair or replace it. Then go to Step 6.

STEP 3. Check for open circuit in the wiring 
harness between A-48 ASTC-ECU connector and 
C-113 combination meter connector.
Check for open circuit in the wiring harness between 
A-48 ASTC-ECU connector terminal No.3 and C-113 
combination meter connector terminal No.19.

Q: Is the check result normal?

TROUBLESHOOTING

ACTIVE STABILITY & TRACTION CONTROL SYSTEM (ASTC)

35C-121

YES : 

Go to Step 4.

NO : 

Repair the wiring harness between the A-48 
ASTC-ECU terminal No.3 and the C-113 
combination meter connector terminal 
No.19. Then go to Step 6.

STEP 4. M.U.T.-III diagnosis code

Q: Is any diagnosis code set?

YES : 

Refer to Diagnosis Code Chart (Refer to .). 

Then go to Step 6.

NO : 

Replace the combination meter assembly 
(Refer to GROUP 54A, Combination Meter 
.). Then go to Step 5.

STEP 5. Retest the system

Q: Turn the ignition switch to the "ON" position. Does 

the ABS warning lamp illuminate for three 
seconds, and then go out after the engine starts?
YES : 

The procedure is complete.

NO : 

Replace the hydraulic unit (integrated with 
ASTC-ECU) (Refer to 

P.35C-140

.). Then go 

to Step 6.

STEP 6. Retest the system

Q: Turn the ignition switch to the "ON" position. Does 

the ABS warning lamp illuminate for three 
seconds, and then go out after the engine starts?
YES : 

The procedure is complete.

NO : 

Return to Step 1.

TROUBLESHOOTING

ACTIVE STABILITY & TRACTION CONTROL SYSTEM (ASTC)

35C-122

Inspection Procedure 5: ASTC indicator lamp stays ON after the engine is started.

Combination Meter Circuit

ASTC-ECU

IGNITION 
SWITCH (IG1)

COMBINATION 
METER

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

ACB00857

19

14

13

1

3

15

2

16

4

18

6

17

5

7

22

10

21

20

8 9

23

11

24

12

NOTE

LHD

: 

RHD

: 

AC800980

AG

Connector: A-48

(B)

AC600688

Connector: C-13 <LHD>

BS

AC600623DJ

Connectors: C-13 <RHD>

AC600687CI

Connector: C-113 <LHD>

Harness side 
connector

18

19

21

22

20

2423

11

12

10 9

7

8

6

1413

171615

3

4

5

1

2

AC600623

 Harness side 
connector

CO

Connector: C-113 <RHD>

18

19

21

22

20

2423

11

12

10 9

7

8

6

1413

171615

3

4

5

1

2

TROUBLESHOOTING

ACTIVE STABILITY & TRACTION CONTROL SYSTEM (ASTC)

35C-123

CAUTION

If there is any problem in the CAN bus lines, an 
incorrect diagnosis code may be set. Diagnose 
the CAN bus lines before the diagnosis codes 
(Refer to GROUP 54C 

− CAN Bus Diagnostics 

Table .).
OPERATION
By the input from the ASTC indicator lamp circuit, 
ASTC-ECU controls ON/OFF of the ASTC indicator 
lamp.

COMMENT
This may be caused by faults in wiring harness or 
connectors between the ASTC-ECU and ASTC indi-
cator lamp, combination meter or ASTC-ECU.

PROBABLE CAUSES

• Malfunction of the combination meter

• Damaged harness, connector

• Malfunction of the hydraulic unit assembly (inte-

grated with ASTC-ECU)

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics
Use M.U.T.-III to diagnose the CAN bus lines.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair the CAN bus lines (Refer to GROUP 
54C 

− CAN Bus Diagnostics Table .). Then 

go to Step 6.

STEP 2. Connector check: A-48 ASTC-ECU 
connector, C-13 intermediate connector, C-113 
combination meter connector

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair or replace it. Then go to Step 6.

STEP 3. Check for open circuit in the wiring 
harness between A-48 ASTC-ECU connector and 
C-113 combination meter connector.
Check for open circuit in the wiring harness between 
A-48 ASTC-ECU connector terminal No.22 and C-
113 combination meter connector terminal No.33.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the wiring harness between the A-48 
ASTC-ECU terminal No.22 and the C-113 
combination meter connector terminal 
No.33. Then go to Step 6.