Mitsubishi L200. Manual - part 783

 

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Mitsubishi L200. Manual - part 783

 

 

ETACS

CHASSIS ELECTRICAL

54A-499

STEP 3. Check the wiring harness between C-218 
ETACS-ECU connector terminal No.20 and the 
fusible link (20).

NOTE: 

Prior to the wiring harness inspection, check junction 
block connector C-213, and repair if necessary.

• Check the power supply line for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the wiring harness. Go to Step 5.

AC503086

AD

Battery

Front of vehicle

24

23

22

21

20

19

Fusible link (20)

AC509934

Connectors: C-213, C-218 <LHD>

Junction block (Front view)

C-213

C-213

CP

Harness side

C-218

C-218

Junction block side

AC509943

Connector: C-218 <RHD>

AC

Junction block

 (Rear view)

Junction block side

AC509936

Connector: C-213 <RHD>

Harness side

AI

Junction block 

(Front view)

ETACS

CHASSIS ELECTRICAL

54A-500

STEP 4. Check the wiring harness between C-219 
ETACS-ECU connector terminal No.74 and the 
ignition switch (ACC).

NOTE: 

Prior to the wiring harness inspection, check joint 
connector C-127, junction block connectors C-207 
and C-208, and repair if necessary.

• Check the power supply line for open circuit.

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 ). Go to Step 5.

NO : 

Repair the wiring harness. Go to Step 5.

STEP 5. Check whether the diagnosis code is 
reset.
Check if diagnosis code No.B1762 or B1765 is set to 
the ETACS-ECU.

Q: Is the diagnosis code set?

YES : 

Replace the ETACS-ECU and register the 

ID codes (Refer to 

P.54A-39

).

NO : 

The procedure is complete.

AC509935AG

Connectors: C-207, C-208, C-219 <LHD>

C-219 (GR)

C-207

Harness side

C-219

C-208

C-208

C-207

Harness side

Harness side

AC509943

Connector: C-219 <RHD>

AB

C-219 (GR)

Harness side

Junction block
 (Rear view)

AC903853

Connector: C-127 <LHD>

AE

C-127 (GR)

AC903865

Connector: C-127 <RHD>

AD

C-127 (GR)

AC509936

Connectors: C-207, C-208 <RHD>

C-207

C-208

C-207

Harness side

Harness side

C-208

AB

Junction block 
(Front view)

ETACS

CHASSIS ELECTRICAL

54A-501

Code No.U1073: Bus off

CAUTION

• If diagnosis code No.U1073 is set in the 

ETACS-ECU, diagnose the CAN bus lines.

• Whenever the ECU is replaced, ensure that 

the input and output signal circuits are nor-
mal.

TROUBLE JUDGEMENT
Diagnosis code No.U1073 will be stored when the 
ETACS-ECU ceases CAN communication (bus off) 
and then resumes the communication by turning the 
ignition switch to the "LOCK" (OFF) position.

COMMENT ON TROUBLE SYMPTOM
The wiring harness wire or connectors may have 
loose, corroded, or damaged terminals, or terminals 
pushed back in the connector.

PROBABLE CAUSES
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 3.

STEP 2. 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 

P.54A-39

), and Then go 

to Step 3.

NO : 

If the trouble is solved, it is determined that 
there is an intermittent malfunction such as 
poor engaged connector(s) or open circuit 
(Refer to GROUP 00, How to Use 
Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunctions 
).

STEP 3. Check whether the diagnosis code is 
reset.
Recheck 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 the diagnosis code is reset.

Q: Is the diagnosis code set?

YES : 

Return to Step 1.

NO : 

The procedure is complete.

Code No.U1100: Engine-ECU time-out (Related to Engine)

 

Code No.U1101: A/T-ECU time-out (Related to A/T)

CAUTION

• If diagnosis code No.U1100 or U1101 is set in 

the ETACS, diagnose the CAN main bus line.

• Whenever the ECU is replaced, ensure that 

the communication circuit is normal.

• For M/T-vehicles, diagnosis code No. U1101 

does not mean that there is a problem..

TROUBLE JUDGEMENT

Diagnosis code No.U1100

• The ETACS-ECU receives engine control sys-

tem-related signals from the engine-ECU through 

the CAN bus lines. If the ECU cannot receive the 
engine control system-related signal at all, diag-
nosis code No.U1100 will be set.

Diagnosis code No.U1101

• The ETACS-ECU receives the transmission con-

trol signals from the A/T-ECU <A/T> via CAN bus 
lines. If the ECU cannot receive the transmission 
control signal at all, diagnosis code No.U1101 will 
be set.

ETACS

CHASSIS ELECTRICAL

54A-502

COMMENT ON TROUBLE SYMPTOM

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

active.

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

lines between the ETACS-ECU and the engine-
ECU or the A/T-ECU <A/T>, the power supply cir-
cuits to the engine-ECU or the A/T-ECU <A/T> 
itself may be defective.

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

stored.

• If diagnosis code No.U1100 or U1101 is set as 

past trouble, carry out diagnosis with particular 
emphasis on wiring and connector(s) in the CAN 
bus lines between the ETACS-ECU and the 
engine-ECU or the A/T-ECU <A/T>, or power 
supply to the engine-ECU or the A/T-ECU <A/T>. 
For diagnosis procedures, refer to GROUP 00, 
How to Use Troubleshooting/Inspection Service 
Points 

− How to Treat Past Trouble .

NOTE: For a past trouble, you cannot find it by the 

M.U.T.-III CAN bus diagnostics even if there is 
any failure in CAN bus lines. In this case, refer to 
GROUP 00, How to Use Troubleshooting/Inspec-
tion Service Points 

−

 How to Cope with Intermit-

tent Malfunctions  and check the CAN bus lines. 
You can narrow down the probable cause of the 
trouble by referring to the diagnosis code, which 
is set regarding the CAN communication-linked 
ECUs (Refer to GROUP 54C 

−

 CAN Bus Line 

Diagnostic Flow ).

PROBABLE CAUSES

• Malfunction of the engine-ECU or the A/T-ECU 

<A/T>

• Malfunction of the CAN bus

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 6.

STEP 2. Check the diagnosis code of the engine-
ECU or the A/T-ECU <A/T>.
Check if the diagnosis code is set in either of the 
engine-ECU or the A/T-ECU <A/T>.

Q: Is the diagnosis code set?

YES : 

Diagnose the engine-ECU or the A/T-ECU 

(Refer to GROUP 13A 

− Troubleshooting  

<engine-ECU> or GROUP 23A 
Troubleshooting  <A/T-ECU>). On 
completion, go to Step 6.

NO : 

Go to Step 3.

STEP 3. M.U.T.-III other system diagnosis code
Check if a diagnosis code, which relates to CAN 
communication-linked systems below, is set.

• ABS-ECU

U1100: Engine-ECU time-out or U1101: A/T-ECU 

time-out  <A/T>

Q: Is the diagnosis code set?

YES : 

Go to Step 4.

NO : 

Go to Step 5.

STEP 4. 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 engine-ECU or the A/T-ECU 

<A/T>. Then, carry out the CAN bus 
diagnostics.Then go to Step 6.

NO : 

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

− 

How to Cope with Intermittent Malfunctions 
).

STEP 5. 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?

 

 

 

 

 

 

 

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