Mitsubishi Outlander GS45X. Manual - part 192

ETACS

TSB Revision

CHASSIS ELECTRICAL

54A-765

DTC U0331: ECU internal error

.

TROUBLE JUDGMENT

If the ETACS-ECU error counter value is detected to 
be "255," DTC U0331 is set, and the ETACS-ECU is 
reset. The DTC U0331 exists only as past trouble.

.

TROUBLESHOOTING HINTS

• The ETACS-ECU may be defective.

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A (Vehicles with 

CAN communication system)

Recheck for diagnostic trouble code.
Check again if the DTC is set to the ETACS-ECU.

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect the 

Scan Tool (M.U.T.-III) 

P.54A-730

."

(2) Turn the ignition switch to the "ON" position.
(3) Erase the DTC.
(4) Turn the ignition switch from "LOCK" (OFF) position to "ON" 

position.

(5) Check if DTC is set.
(6) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Replace the ETACS-ECU.
NO :  The diagnosis is complete.

ZC501967

AC404789

AC702802

MB991824

MB991827

MB991910

Data link

connector

AB

ETACS

TSB Revision

CHASSIS ELECTRICAL

54A-766

DTC B1761: Chassis number not recorded

.

TROUBLE JUDGMENT

If the chassis number is not written to the 
ETACS-ECU, the ETACS-ECU sets DTC B1761.

.

TROUBLESHOOTING HINTS

• Chassis number not recorded

• The ETACS-ECU may be defective.

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A (Vehicles with 

CAN communication system)

Recheck for diagnostic trouble code.
Check again if the DTC is set to the ETACS-ECU.

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect the 

Scan Tool (M.U.T.-III) 

P.54A-730

."

(2) Turn the ignition switch to the "ON" position.
(3) Erase the DTC.
(4) Turn the ignition switch from "LOCK" (OFF) position to "ON" 

position.

(5) Check if DTC is set.
(6) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Replace with the coded ETACS-ECU.
NO :  The diagnosis is complete.

ZC501967

AC404789

AC702802

MB991824

MB991827

MB991910

Data link

connector

AB

ETACS

TSB Revision

CHASSIS ELECTRICAL

54A-767

DTC B210A: +B power supply (low input)

 

DTC B210B: +B power supply (high input)

CAUTION

Before replacing the ECU, ensure that the input 
and output signal circuits are normal.

.

TROUBLE JUDGMENT

The ETACS-ECU sets DTC B210A if the power sup-
ply fuse voltage decreases to the specified value or 
less, and sets DTC B210B if the power supply fuse 
voltage increases to the specified value or more. 
However, when the status returns to normal, the 
ETACS-ECU automatically erases DTCs B210A and 
B210B.

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TECHNICAL DESCRIPTION (COMMENT)

The power supply fuse or the ETACS-ECU may have 
a problem.

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TROUBLESHOOTING HINTS

• The power supply fuse may be defective.

• The ETACS-ECU may be defective.

• The battery may be defective.

• The generator may be defective.

• The wiring harness or connectors may have 

loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB992006: Extra Fine Probe

ETACS-ECU Power Supply Circuit

ETACS-ECU

FUSIBLE
LINK

36

RELAY
BOX

ACA02655BA

Connector: C-307

ETACS

TSB Revision

CHASSIS ELECTRICAL

54A-768

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A (Vehicles with 

CAN communication system)

STEP 1. Power supply fuse check.
Q: Is the fuse in good condition?

YES : Go to Step 3.
NO :  Go to Step 2.

STEP 2. Wiring harness check between C-307 ETACS-ECU 
connector and fuse No. 30.
Check the power supply line for short circuit.
Q: Is the check result normal?

YES : Replace the fuse No.30.
NO :  A short circuit may be present in the power supply 

circuit. Repair the wiring harness between 
ETACS-ECU connector C-307 terminal No. 2 and 
fuse No. 30, and replace fuse No. 30.

STEP 3. Battery check
Refer to 

P.54A-9

.

Q: Is the battery in good condition?

YES : Go to Step 4.
NO :  Charge or replace the battery.

STEP 4. Charging system check
Refer to GROUP 16 

− Output Current Test 

P.16-9

.

Q: Is the charging system in good condition?

YES : Go to Step 5.
NO :  Repair or replace the charging system component(s).

STEP 5. Check ETACS-ECU connector C-307 for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.
Q: Is ETACS-ECU connector C-307 in good condition?

YES : Go to Step 6.
NO :  Repair or replace the component(s). Refer to GROUP 

00E, Harness Connector Inspection 

P.00E-2

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