Mitsubishi Evolution X. Manual - part 1066

ETACS

TSB Revision

CHASSIS ELECTRICAL

54A-625

DTC B222C: Coding incomplete

.

TROUBLE JUDGEMENT

If the ETACS-ECU is in the initial state or the variant 
coding is incomplete, the ETACS-ECU sets DTC 
B222C.

.

TROUBLESHOOTING HINTS

• Variant code not written

• 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-579

."

(2) Turn the ignition switch to the "ON" position.
(3) Perform the variant coding to the ETACS-ECU.
(4) Erase the DTC.
(5) Turn the ignition switch from "LOCK" (OFF) position to "ON" 

position.

(6) Check if DTC is set.
(7) 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.

DTC B2206: Chassis number does not match

CAUTION

If DTC B2206 is set, always diagnose the CAN 
bus line.

.

TROUBLE JUDGEMENT

If the registered chassis number is different from the 
chassis number transmitted on the CAN bus lines, 
the ETACS-ECU sets DTC B2206.

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JUDGEMENT CRITERIA

If the chassis number registered to ETACS-ECU and 
the chassis number on CAN bus lines do not match, 
the ETACS-ECU determines that a problem has 
occurred.

.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

ETACS

TSB Revision

CHASSIS ELECTRICAL

54A-626

TROUBLESHOOTING HINTS

• Chassis number not written

• The ETACS-ECU may be defective.

• The engine control module may be defective.

• The CAN bus line 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)

STEP 1. Using scan tool MB991958, diagnose the CAN bus 
line.

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-579

."

(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CAN bus line found to be normal?

YES : Go to Step 2.
NO :  Repair the CAN bus line (Refer to GROUP 54C, 

Diagnosis 

P.54C-14

).

STEP 2. Using scan tool MB991958, read the engine 
control module diagnostic trouble code.
Check if DTC is set to the engine control module.
Q: Is the DTC set?

YES : Troubleshoot the engine (Refer to GROUP 13A, 

Diagnostic Trouble Code Chart 

P.13A-44

).

NO :  Go to Step 3.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

ETACS

TSB Revision

CHASSIS ELECTRICAL

54A-627

STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set to the ETACS-ECU.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON" 

position.

(3) Check if DTC is set.
(4) 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.

DTC B2215: ECU internal error

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TROUBLE JUDGEMENT

When the ETACS-ECU internal error count reaches 
"255," DTC B2215 is set.

.

TROUBLESHOOTING HINTS

• The ETACS-ECU may be defective.

DIAGNOSIS

Replace the ETACS-ECU.

DTC B2353: Ignition power supply (low input)

 

DTC B2354: Ignition power supply (high input)

CAUTION

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

Ignition Switch (IG1) Input Circuit

ETACS-ECU

IGNITION
SWITCH (IG1)

ETACS

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CHASSIS ELECTRICAL

54A-628

.

TROUBLE JUDGMENT

These DTCs are set when the ignition power supply 
voltage decreases to the specified value or less 
(DTC B2353) or increases to the specified value or 
more (DTC B2354). However, when the status 
returns to normal, the DTCs B2353 and B2354 are 
automatically erased.

.

TECHNICAL DESCRIPTION (COMMENT)

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

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TROUBLESHOOTING HINTS

• The power supply circuit may be defective.

• The battery may be defective.

• The generator may be defective.

• The ETACS-ECU may be defective.

• The ignition switch 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

• 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. Using scan tool MB991958, check data list.
Check the ignition power supply voltage.

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-579

."

(2) Check the ETACS data list.

• Turn the ignition switch to the "ON" position.

(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Do the scan tool MB991958 display the item "IG voltage" 

is normal condition?
YES : Go to Step 7.
NO :  Go to Step 2.

AC708972AB

Connector: C-317

Junction block

Item No.

Item name

Normal 
condition

Item 254

IG voltage

Approximately 12 
volts (battery 
positive voltage)

AC608435

Data link connector

MB991827

MB991824

MB991910

AB