Mitsubishi L200. Manual — part 467

TROUBLESHOOTING

ACTIVE STABILITY & TRACTION CONTROL SYSTEM (ASTC)

35C-124

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 ASTC indicator 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 ASTC indicator 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-125

Inspection Procedure 6: ASTC OFF 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-126

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 OFF indicator lamp cir-
cuit, ASTC-ECU controls ON/OFF of the ASTC indi-
cator lamp.

COMMENT
This may be caused by faults in wiring harness or
connectors between the ASTC-ECU and ASTC OFF
indicator 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.10 and C-
113 combination meter connector terminal No.32.

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Repair the wiring harness between the A-48
ASTC-ECU terminal No.10 and the C-113
combination meter connector terminal
No.32. Then go to Step 6.

TROUBLESHOOTING

ACTIVE STABILITY & TRACTION CONTROL SYSTEM (ASTC)

35C-127

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 ASTC OFF indicator 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 ASTC OFF indicator lamp illuminate for three
seconds, and then go out after the engine starts?
YES :

The procedure is complete.

NO :

Return to Step 1.