Mitsubishi L200. Manual - part 804

DIAGNOSIS CODE PROCEDURES

LOCAL INTERCONNECT NETWORK (LIN)

54B-27

COMMENT ON TROUBLE SYMPTOM

The M.U.T.-III shows a diagnosis code status as 

active.

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

lines between the rear power window sub switch 
(LH) and the ETACS-ECU, the power supply sys-
tem of the rear power window sub switch (LH), or 
the rear power window sub switch (LH) itself may 
be defective.

The M.U.T.-III shows a diagnosis code status as 

stored.

• If diagnosis code No.U1510 is stored as a past 

trouble, carry out diagnosis with particular 
emphasis on wiring and connector(s) in the LIN 
bus line between the rear power window sub 
switch (LH) and the ETACS-ECU, and the power 
supply system of the rear power window sub 
switch (LH). For diagnosis procedures, refer to 
GROUP 00, How to Use Troubleshooting/Inspec-
tion Service Points 

− How to Treat Past Trouble .

PROBABLE CAUSES

• Malfunction of the rear power window sub switch 

(LH)

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Connector check: C-219 ETACS-ECU 
connector, E-13 rear power window sub switch 
(LH) connector

AC509934

Connector: C-219 <LHD>

AD

C-219 (GR)

Harness side

Junction block

AC502333AD

Connector: E-13

Harness side

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair the defective connector.

STEP 2. Resistance measurement at the E-13 rear 
power window sub switch (LH) connector

AC502333AD

Connector: E-13

Harness side

(1) Disconnect the connector, and measure at the 

DIAGNOSIS CODE PROCEDURES

LOCAL INTERCONNECT NETWORK (LIN)

54B-28

wiring harness side.

AC310506KP

Connector E-13
(Harness side)

(2) Measure the resistance between the E-13 rear 

power window sub switch (LH) connector 
terminal No. 1 and the body earth.

OK: Continuity exists (2 

Ω or less)

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Go to Step 3.

STEP 3. Check the wiring harness between E-13 
rear power window sub switch (LH) connector 
terminal No. 1 to body earth

AC502333AD

Connector: E-13

Harness side

Check the earth wires for open circuit.
NOTE: 

AC901129

Connector: D-14

AG

Prior to the wiring harness inspection, check interme-
diate connector D-14, and repair if necessary.

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 : 

Repair the wiring harness.

STEP 4. Voltage measurement at the E-13 rear 
power window sub switch (LH) connector.

AC502333AD

Connector: E-13

Harness side

(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Ignition switch: ON position

AC310507

Connector E-13
(Harness side)

MG

(3) Measure the voltage between the E-13 rear 

power window sub switch (LH) connector 
terminal No. 4 and the body earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Go to Step 5.

DIAGNOSIS CODE PROCEDURES

LOCAL INTERCONNECT NETWORK (LIN)

54B-29

STEP 5. Check the wiring harness between E-13 
rear power window sub switch (LH) connector 
terminal No. 4 and the power window relay

AC502333AD

Connector: E-13

Harness side

Check the power supply line for open circuit and 
short circuit.
NOTE: 

AC903853

Connector: C-16 <LHD>

AL

AC903868

Connector: C-16 <RHD>

AQ

AC903856

Connectors: C-32, C-33 <LHD>

AJ

C-33

C-32

C-33

C-32 (GR)

AC903865

Connectors: C-32, C-33 <RHD>

AE

C-33

C-32 (GR)

C-32

C-33

AC901129

Connector: D-14

AG

Prior to the wiring harness inspection, check interme-

DIAGNOSIS CODE PROCEDURES

LOCAL INTERCONNECT NETWORK (LIN)

54B-30

diate connectors C-16, C-33, D-14 and joint connec-
tor C-32, and repair if necessary.

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 : 

Repair the wiring harness.