Mitsubishi L200. Manual — part 808

DIAGNOSIS CODE PROCEDURES

LOCAL INTERCONNECT NETWORK (LIN)

54B-43

Code No.U1530: Column-ECU checksum error

COMMENTS ON TROUBLE SYMPTOM
If any abnormality is found with the column-ECU, the
ETACS-ECU stores the diagnosis code No.U1530.

PROBABLE CAUSES

• Malfunction of the lighting switch

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 lighting switch.

NO :

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

− How to Cope with Intermittent

Malfunctions ).

Code No.U1532: LIN comm. lighting control sensor <Vehicles with auto lamp>

NOTE: When the diagnosis codes relating to the LIN
communication error are set, make sure of the vehi-
cle equipment. When the vehicle is not equipped with
the system the ETACS-ECU communicates to, the
diagnosis code is always set. This is not abnormal.
COMMENTS ON TROUBLE SYMPTOM
If any abnormality is found with the lighting control
sensor, the ETACS-ECU stores the diagnosis code
No.U1532.

PROBABLE CAUSES

• Malfunction of the lighting control sensor

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) 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 Malfunction ).

Code No.U1534: Power window main switch checksum error

COMMENTS ON TROUBLE SYMPTOM
If any abnormality is found with the power window
main switch, the ETACS-ECU stores the diagnosis
code No.U1534.

PROBABLE CAUSES

• Malfunction of the power window main switch

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

DIAGNOSIS CODE PROCEDURES

LOCAL INTERCONNECT NETWORK (LIN)

54B-44

reset.

Q: Is the diagnosis code set?

YES :

Replace the power window main switch.

NO :

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

− How to Cope

with Intermittent Malfunctions ).

Code No.U1535: Power window sub switch (AS) checksum error

COMMENTS ON TROUBLE SYMPTOM
If any abnormality is found with the front power win-
dow sub switch, the ETACS-ECU stores the diagno-
sis code No.U1535.

PROBABLE CAUSES

• Malfunction of the front power window sub switch

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 front power window sub switch.

NO :

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

− How to Cope

with Intermittent Malfunctions ).

Code No.U1536: Power window sub switch (RL) checksum error

COMMENTS ON TROUBLE SYMPTOM
If any abnormality is found with the rear power win-
dow sub switch (LH), the ETACS-ECU stores the
diagnosis code No.U1536.

PROBABLE CAUSES

• Malfunction of the rear power window sub switch

(LH)

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 rear power window sub switch

(LH).

NO :

A poor connection, open circuit or other
intermittent malfunction is present in the LIN
bus lines between the rear power window
sub switch (LH) and the ETACS-ECU (Refer
to GROUP 00, How to Use Troubleshooting/
Inspection Service Points

− How to Cope

with Intermittent Malfunctions ).

Code No.U1537: Power window sub switch (RR) checksum error

COMMENTS ON TROUBLE SYMPTOM
If any abnormality is found with the rear power win-
dow sub switch (RH), the ETACS-ECU stores the

diagnosis code No.U1537.

DIAGNOSIS CODE PROCEDURES

LOCAL INTERCONNECT NETWORK (LIN)

54B-45

PROBABLE CAUSES

• Malfunction of the rear power window sub switch

(RH)

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 rear power window sub switch

(RH).

NO :

A poor connection, open circuit or other
intermittent malfunction is present in the LIN
bus lines between the rear power window
sub switch (RH) and the ETACS-ECU
(Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points

−

How to Cope with Intermittent Malfunctions
).

Code No.U1538: Rear panel power window-ECU checksum error

COMMENTS ON TROUBLE SYMPTOM
If any abnormality is found with the rear panel power
window-ECU, the ETACS-ECU stores the diagnosis
code No.U1538.

PROBABLE CAUSES

• Malfunction of the rear panel power window-ECU

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 rear panel power window-ECU.

NO :

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

− How to Cope

with Intermittent Malfunctions ).

DIAGNOSIS CODE PROCEDURES

LOCAL INTERCONNECT NETWORK (LIN)

54B-46

Code No.U1570 No bus activity error for LIN

ETACS-ECU

COLUMN
SWITCH

LIN INTERFACE

LIN Communication Circuit

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

POWER
WINDOW
SUB SWITCH
(REAR: LH)

POWER
WINDOW
MOTOR
(REAR: LH)

REAR PANEL
POWER
WINDOW-ECU

POWER
WINDOW
SUB SWITCH
(FRONT: RH)

POWER
WINDOW
MAIN SWITCH

LIGHTING
CONTROL
SENSOR

NOTE

LHD

:

RHD

:

TROUBLE JUDGEMENT
The ETACS-ECU will set diagnosis code No. U1570
when no communication has been carried out for
more than a certain period after the slave task
received last valid data.

PROBABLE CAUSES

• Malfunction of the ETACS-ECU

• Malfunction of the slave ECU

• LIN bus lines shorted to power supply

• LIN bus lines shorted to earth