Mitsubishi L200. Manual — part 801

DIAGNOSIS CODE PROCEDURES

LOCAL INTERCONNECT NETWORK (LIN)

54B-15

STEP 6. Check the wiring harness between C-219
ETACS-ECU connector terminal No. 54 and D-38
lighting control sensor connector terminal No. 3.

AC509934

Connector: C-219 <LHD>

CU

C-219 (GR)

Harness side

Junction block (Front view)

AC903877AB

Connector: D-38 <LHD>

Harness side

AC903879AB

Connector: D-38 <RHD>

Harness side

Check the communication lines for open circuit.
NOTE:

AC903856

Connectors: C-117, C-138 <LHD>

C-117

AD

C-138 (L)

C-117

C-138

AC903868

Connectors: C-117, C-138 <RHD>

C-117

AD

C-138 (L)

C-117

C-138

Prior to the wiring harness inspection, check joint
connector C-138 and intermediate connector C-117,
and repair if necessary.

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Repair the wiring harness. Go to Step 7.

STEP 7. Check whether the diagnosis code is
reset.
Check again if the diagnosis code is set to the
ETACS-ECU.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from "LOCK" (OFF)

position to "ON" position.

(3) Check if diagnosis code is set.

Q: Is the diagnosis code set?

YES :

Replace the lighting control sensor.

NO :

A poor connection, open circuit or other
intermittent malfunction is present in the LIN
bus lines between the lighting control
sensor and the ETACS-ECU (Refer to
GROUP 00, How to Use Troubleshooting/
Inspection Service Points

− How to Cope

with Intermittent Malfunctions ).

Code No.U1507: ETACS-ECU LIN Communication Error

COMMENTS ON TROUBLE SYMPTOM
If any abnormality is found with the ETACS-ECU, the
ETACS-ECU stores the diagnosis code No. U1507.

PROBABLE CAUSES

• Malfunction of the ETACS-ECU

DIAGNOSIS CODE PROCEDURES

LOCAL INTERCONNECT NETWORK (LIN)

54B-16

DIAGNOSIS PROCEDURE

Check whether the diagnosis code is reset.
Check again if the diagnosis code is set to the
ETACS-ECU.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from "LOCK" (OFF)

position to "ON" position.

(3) On completion, check that the diagnosis code is

reset.

Q: Is the diagnosis code set?

YES :

Replace the ETACS-ECU and register the

ID codes (Refer to GROUP 54A,
Immobilizer System

− On-vehicle service ).

NO :

The trouble can be an intermittent
malfunction (Refer to GROUP 00, How to
Use Troubleshooting/Inspection Service
Points

− How to Cope with Intermittent

Malfunctions ).

Code No.U1508: Power window main switch time-out

Power Window Main Switch LIN Communication Circuit

LIN
INTERFACE

CPU

POWER WINDOW
MAIN SWITCH

ETACS-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

RELAY
BOX

POWER WINDOW
RELAY

NOTE

LHD

:

RHD

:

TROUBLE JUDGEMENT
The ETACS-ECU receives signal from the power
window main switch. If signal cannot be received at
all, diagnosis code No.U1508 will be set.

DIAGNOSIS CODE PROCEDURES

LOCAL INTERCONNECT NETWORK (LIN)

54B-17

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 power window main switch and
the ETACS-ECU, the power supply system of the
power window main switch, or the power window
main switch itself may be defective.

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

stored.

• If diagnosis code No.U1508 is stored as a past

trouble, carry out diagnosis with particular
emphasis on wiring and connector(s) in the LIN
bus line between the power window main switch
and the ETACS-ECU, and the power supply sys-
tem of the power window main switch. For diag-
nosis procedures, refer to GROUP 00, How to
Use Troubleshooting/Inspection Service Points

−

How to Treat Past Trouble .

PROBABLE CAUSES

• Malfunction of the power window main switch

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Connector check: C-219 ETACS-ECU
connector, E-03 power window main switch
connector

AC509934

Connector: C-219 <LHD>

AD

C-219 (GR)

Harness side

Junction block

AC509952

Connector: E-03

AT

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-03
power window main switch connector

AC509952

Connector: E-03

AT

Harness side

(1) Disconnect the connector, and measure at the

wiring harness side.

AC310506KN

Connector E-03
(Harness side)

(2) Measure the resistance between the E-03 power

window main switch connector terminal No. 2 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.

DIAGNOSIS CODE PROCEDURES

LOCAL INTERCONNECT NETWORK (LIN)

54B-18

STEP 3. Wiring harness check from E-03 power
window main switch connector terminal No. 2 to
body earth

AC509952

Connector: E-03

AT

Harness side

Check the earth wires for open circuit.
NOTE:

AC903856AG

Connector: C-134 <LHD>

Harness side

AC903868

AG

Connector: C-122 <RHD>

Harness side

Prior to the wiring harness inspection, check interme-
diate connector C-134 <LHD> or C-122 <RHD>, 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-03 power
window main switch connector.

AC509952

Connector: E-03

AT

Harness side

(1) Disconnect the connector, and measure at the

wiring harness side.

(2) Ignition switch: ON position

AC310507ME

Connector E-03
(Harness side)

(3) Measure the voltage between the E-03 power

window main switch connector terminal No. 6 and
the body earth.

OK: System voltage

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Go to Step 5.