Mitsubishi L200. Manual — part 678

COMBINATION METER

CHASSIS ELECTRICAL

54A-79

NOTE:

Prior to the wiring harness inspection, check junction
block connector C-210 and intermediate connector
C-54 <LHD> or C-14 <RHD>, and repair if neces-
sary.

• Check the output lines for open circuit.

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Repair the wiring harness.

STEP 7. Retest the system.
Check that the turn-signal lamp indicator illuminates
normally.

Q: Is the check result normal?

YES :

The trouble can be an intermittent

malfunction (Refer to GROUP 00

− How to

use Troubleshooting/inspection Service
Points

− How to Cope with Intermittent

Malfunction ).

NO :

Replace the combination meter.

Inspection procedure 13: The door-ajar warning lamp does not illuminate.

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 accord-

ance with the input signals below.

• Ignition switch (IG1)

AC509936

Connector: C-210 <RHD>

Harness side

BD

Junction block

(Front view)

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 SI : Silver

Door-Ajar Warning Lamp Function

ETACS-
ECU

CAN COMMUNICATION
LINE (CAN_L LINE)

CAN COMMUNICATION
LINE (CAN_H LINE)

VEHICLE SPEED

INPUT SIGNAL

INPUT SIGNAL

· DOOR
SWITCHES
· IGNITION
SWITCH (IG1)

COMBINATION METER

ENGINE-ECU

COMBINATION METER

CHASSIS ELECTRICAL

54A-80

• Driver's door switch

• Passenger's door switch

• Rear door switch

• Vehicle speed signal

If this function does not work normally, these input
signal circuit(s) or the ETACS-ECU may be defec-
tive.

PROBABLE CAUSES

• Malfunction of the front door switch (RH)

• Malfunction of the front door switch (LH)

• Malfunction of the rear door switch (RH)

• Malfunction of the rear door switch (LH)

• Malfunction of the tailgate switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics
Use the 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 line (Refer to GROUP
54C

− Troubleshooting ). On completion, go

to Step 5.

STEP 2. Check the diagnosis code of the engine-
ECU.
Check if the diagnosis code is set in either of the
engine-ECU.

Q: Is the diagnosis code set?

YES :

Diagnose the engine-ECU (Refer to

GROUP 13A

− Troubleshooting . On

completion, go to Step 4.

NO :

Go to Step 3.

STEP 3. M.U.T.-III data list
Check the input signals below, which are related to
the door-ajar warning lamp function.

• Turn the ignition switch to the "LOCK" (OFF)

position.

• Open any door (including tailgate).

OK: Normal conditions are displayed for all
the items.

Q: Is the check result normal?

YES <All the signals are received normally.> :

Go

to Step 4.

NO <The driver's door switch signal is not
received.> :

Refer to inspection procedure C-5

"One of the door switch signals is not
received

P.54A-540

."

NO <The passenger's door switch signal is not
received.> :

Refer to inspection procedure C-5

"One of the door switch signals is not
received

P.54A-540

."

NO <The rear door switch signal is not received.> :

Refer to inspection procedure C-5 "One of
the door switch signals is not received

P.54A-540

."

NO <The ignition switch (IG1) signal is not
received.> :

Refer to inspection procedure C-3

"The ignition switch (IG1) signal is not
received

P.54A-533

."

STEP 4. Check the combination meter

Q: Does the combination meter work?

YES :

Go to Step 5.

NO :

Refer to symptom procedure 1 "Power
Supply Circuit System Check

P.54A-47

."

Item
No.

Item name

Normal condition

19

Drive’s door switch

Any of them becomes
ON.

48

Passenger’s door
switch

49

Rear door switch

30

Ignition switch(IG1)

OFF

COMBINATION METER

CHASSIS ELECTRICAL

54A-81

STEP 5. Connector check: C-113 combination
meter connector and C-219 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-113
combination meter connector terminal No.2 to C-
219 ETACS-ECU connector terminal No.55.

• Check the output lines for open circuit.

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Repair the wiring harness.

AC903856

Harness side

BH

Connector: C-113 <LHD>

AC903868

Harness side

BY

Connector: C-113 <RHD>

AC509934

Connector: C-219 <LHD>

AD

C-219 (GR)

Harness side

Junction block

AC509943

Connector: C-219 <RHD>

AB

C-219 (GR)

Harness side

Junction block
(Rear view)

AC903856

Harness side

BH

Connector: C-113 <LHD>

AC903868

Harness side

BY

Connector: C-113 <RHD>

AC509934

Connector: C-219 <LHD>

AD

C-219 (GR)

Harness side

Junction block

AC509943

Connector: C-219 <RHD>

AB

C-219 (GR)

Harness side

Junction block
(Rear view)

COMBINATION METER

CHASSIS ELECTRICAL

54A-82

STEP 7. Retest the system.
The door-ajar warning lamp function should work
normally.

Q: Is the check result normal?

YES :

The trouble can be an intermittent

malfunction (Refer to GROUP 00

− How to

use Troubleshooting/inspection Service
Points

− How to Cope with Intermittent

Malfunction ).

NO :

Replace the ETACS-ECU and register the
ID codes (Refer to

P.54A-39

).

Inspection procedure 14: The seat belt warning lamp does not illuminate or flash.

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 accord-
ance with the input signals below.

• Ignition switch (IG1)

• Driver's seat belt switch

• Passenger's seat belt switch

• Vehicle speed signal

If this function does not work normally, these input
signal circuit(s) or the ETACS-ECU may be defec-
tive.

PROBABLE CAUSES

• Malfunction of the seat belt switch (RH)

• Malfunction of the seat belt switch (LH)

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics
Use the 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 line (Refer to GROUP
54C

− Troubleshooting ). On completion, go

to Step 5.

Seat Belt Warning Lamp Function

ETACS-
ECU

CAN COMMUNICATION
LINE (CAN_L LINE)

CAN COMMUNICATION
LINE (CAN_H LINE)

VEHICLE SPEED

INPUT SIGNAL

INPUT SIGNAL

·SEATBELT
SWITCHES
·IGNITION
SWITCH (IG1)

COMBINATION METER

ENGINE-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 : Grey R : Red P : Pink V : Violet PU : Purple SI : Silver